radiotalk
Collection
Synthetic air traffic control speech datasets • 9 items • Updated
Datasets:
scenario_id stringlengths 40 40 | scenario dict | turns listlengths 4 34 | model stringclasses 1
value | generated_at stringlengths 27 27 | prompt_version stringclasses 1
value | taxonomy_version stringclasses 1
value |
|---|---|---|---|---|---|---|
eb17ac63072f50488c7eef71a9c0f2ce9eaae052 | {
"icao": "KLAX",
"region": "us",
"phase": "ramp",
"aircraft": [
{
"callsign": "EJA7215",
"aircraft_type": "BE30",
"wake": "L",
"operator_class": "business"
},
{
"callsign": "NKS4510",
"aircraft_type": "E175",
"wake": "M",
"operator_class": "commercial... | [
{
"speaker": "KLAX_RAMP",
"text": "Execjet seven two one five, Ramp, pushback approved, face north."
},
{
"speaker": "EJA7215",
"text": "Pushback approved facing north, Execjet seven two one five."
},
{
"speaker": "KLAX_RAMP",
"text": "Spirit Wings four five one zero, pushback approv... | grok-4.20-0309-non-reasoning | 2026-08-08T19:31:41.109423Z | p2 | t1 |
ff9794fe63c42d507fd6f2c9042c08f9071515be | {
"icao": "KDTW",
"region": "us",
"phase": "ramp",
"aircraft": [
{
"callsign": "N56",
"aircraft_type": "C208",
"wake": "L",
"operator_class": "ga"
},
{
"callsign": "PHM9302",
"aircraft_type": "B748",
"wake": "H",
"operator_class": "commercial"
},
... | [
{
"speaker": "KDTW_RAMP",
"text": "November five six, Ramp, pushback approved, face north."
},
{
"speaker": "N56",
"text": "Pushback approved facing north, November five six."
},
{
"speaker": "KDTW_RAMP",
"text": "Petroleum nine three zero two heavy, Ramp, pushback approved, face wes... | grok-4.20-0309-non-reasoning | 2026-08-08T19:31:41.123871Z | p2 | t1 |
d9534b96589a28cbd629ddc434e8295f937a4245 | {
"icao": "KRIC",
"region": "us",
"phase": "approach",
"aircraft": [
{
"callsign": "N7007",
"aircraft_type": "C172",
"wake": "L",
"operator_class": "training"
}
],
"runway": "34",
"sid_star": null,
"squawk": "1771",
"frequency_mhz": 127,
"weather": {
"wind_dir_deg... | [
{
"speaker": "KRIC_APP",
"text": "November seven zero zero seven, Richmond Approach, radar contact, eight miles northwest, descend and maintain three thousand."
},
{
"speaker": "N7007",
"text": "Descend and maintain three thousand, November seven zero zero seven."
},
{
"speaker": "KRIC_A... | grok-4.20-0309-non-reasoning | 2026-08-08T19:31:41.377183Z | p2 | t1 |
3089fa3d36fecd54dd1f3515539758343c2fa771 | {
"icao": "KMSY",
"region": "us",
"phase": "tower",
"aircraft": [
{
"callsign": "AAL6703",
"aircraft_type": "B39M",
"wake": "M",
"operator_class": "commercial"
}
],
"runway": "29",
"sid_star": null,
"squawk": "7403",
"frequency_mhz": 118.84,
"weather": {
"wind_dir... | [
{
"speaker": "KMSY_TWR",
"text": "American six seven zero three, Louis Armstrong Tower, runway two niner, line up and wait."
},
{
"speaker": "AAL6703",
"text": "Line up and wait runway two niner, American six seven zero three."
},
{
"speaker": "KMSY_TWR",
"text": "American six seven ... | grok-4.20-0309-non-reasoning | 2026-08-08T19:31:41.490442Z | p2 | t1 |
7fe49397dec4eac0011cd317628b764c0464f23f | {
"icao": "KLGB",
"region": "us",
"phase": "approach",
"aircraft": [
{
"callsign": "N60",
"aircraft_type": "R22",
"wake": "L",
"operator_class": "ga"
}
],
"runway": "26L",
"sid_star": null,
"squawk": "1566",
"frequency_mhz": 125.31,
"weather": {
"wind_dir_deg": 23... | [
{
"speaker": "KLGB_APP",
"text": "November six zero, Long Beach Approach, radar contact, seven miles southeast, descend and maintain three thousand."
},
{
"speaker": "N60",
"text": "Descend and maintain three thousand, November six zero."
},
{
"speaker": "KLGB_APP",
"text": "November... | grok-4.20-0309-non-reasoning | 2026-08-08T19:31:41.508303Z | p2 | t1 |
17f938730aed49e8ac52bc9a8e28d8111ad546b6 | {
"icao": "KLAS",
"region": "us",
"phase": "tower",
"aircraft": [
{
"callsign": "SKW1223",
"aircraft_type": "B39M",
"wake": "M",
"operator_class": "commercial"
},
{
"callsign": "N941",
"aircraft_type": "R22",
"wake": "L",
"operator_class": "ga"
}
... | [
{
"speaker": "KLAS_TWR",
"text": "Skywest one two two three, Harry Reid Tower, runway zero eight right, line up and wait."
},
{
"speaker": "SKW1223",
"text": "Line up and wait runway zero eight right, Skywest one two two three."
},
{
"speaker": "KLAS_TWR",
"text": "November nine four... | grok-4.20-0309-non-reasoning | 2026-08-08T19:31:41.665993Z | p2 | t1 |
853f9e5033aaed38ea4f95e26b24ea010d157654 | {
"icao": "KPHX",
"region": "us",
"phase": "tower",
"aircraft": [
{
"callsign": "N081",
"aircraft_type": "DA42",
"wake": "L",
"operator_class": "ga"
},
{
"callsign": "EJA3863",
"aircraft_type": "C56X",
"wake": "L",
"operator_class": "business"
}
... | [
{
"speaker": "KPHX_TWR",
"text": "Execjet three eight six three, Phoenix Sky Harbor Tower, runway two five right, line up and wait."
},
{
"speaker": "EJA3863",
"text": "Line up and wait runway two five right, Execjet three eight six three."
},
{
"speaker": "KPHX_TWR",
"text": "Novemb... | grok-4.20-0309-non-reasoning | 2026-08-08T19:31:41.678757Z | p2 | t1 |
2e55cfe34073c2f9c2eb11747dbcf9478c58c766 | {
"icao": "KBOI",
"region": "us",
"phase": "center",
"aircraft": [
{
"callsign": "N18495",
"aircraft_type": "DA42",
"wake": "L",
"operator_class": "ga"
},
{
"callsign": "N413",
"aircraft_type": "R44",
"wake": "L",
"operator_class": "ga"
}
],
"r... | [
{
"speaker": "N18495",
"text": "Descend and maintain seven thousand, November one eight four nine five."
},
{
"speaker": "KBOI_APP",
"text": "November four one three, turn right heading two four zero, descend and maintain five thousand."
},
{
"speaker": "N413",
"text": "Right heading... | grok-4.20-0309-non-reasoning | 2026-08-08T19:31:41.694142Z | p2 | t1 |
12985b6650f38c2464e540cfe86c80e8c5f74691 | {
"icao": "KLAX",
"region": "us",
"phase": "center",
"aircraft": [
{
"callsign": "N32",
"aircraft_type": "DA42",
"wake": "L",
"operator_class": "ga"
},
{
"callsign": "AAL6580",
"aircraft_type": "E195",
"wake": "M",
"operator_class": "commercial"
}
... | [
{
"speaker": "KLAX_CTR",
"text": "November three two, Los Angeles Center, radar contact, descend and maintain one zero thousand."
},
{
"speaker": "N32",
"text": "Descend and maintain one zero thousand, November three two."
},
{
"speaker": "KLAX_CTR",
"text": "American six five eight ... | grok-4.20-0309-non-reasoning | 2026-08-08T19:31:41.747722Z | p2 | t1 |
ef904c9c936c5f4a9e9c9924b16d065e29795859 | {
"icao": "KOKC",
"region": "us",
"phase": "tower",
"aircraft": [
{
"callsign": "ASA8945",
"aircraft_type": "B763",
"wake": "H",
"operator_class": "commercial"
},
{
"callsign": "SWA1545",
"aircraft_type": "E170",
"wake": "M",
"operator_class": "commerc... | [
{
"speaker": "KOKC_TWR",
"text": "Southwest one five four five, Okc Will Rogers Tower, runway one seven right, line up and wait."
},
{
"speaker": "SWA1545",
"text": "Line up and wait runway one seven right, Southwest one five four five."
},
{
"speaker": "KOKC_TWR",
"text": "Brickyard... | grok-4.20-0309-non-reasoning | 2026-08-08T19:31:41.879865Z | p2 | t1 |
ddf25906eafc82d6b27ab1bd31e925f974e29245 | {
"icao": "KSEA",
"region": "us",
"phase": "tower",
"aircraft": [
{
"callsign": "FFT3640",
"aircraft_type": "A332",
"wake": "H",
"operator_class": "commercial"
},
{
"callsign": "SWA1878",
"aircraft_type": "B789",
"wake": "H",
"operator_class": "commerc... | [
{
"speaker": "KSEA_TWR",
"text": "Southwest one eight seven eight, Seattle-Tacoma Tower, runway three four right, line up and wait."
},
{
"speaker": "SWA1878",
"text": "Line up and wait runway three four right, Southwest one eight seven eight."
},
{
"speaker": "KSEA_TWR",
"text": "Fr... | grok-4.20-0309-non-reasoning | 2026-08-08T19:31:41.987299Z | p2 | t1 |
86bbdfb3fb6452b0302a2ab6187b13c158c97691 | {
"icao": "KMDW",
"region": "us",
"phase": "approach",
"aircraft": [
{
"callsign": "N37",
"aircraft_type": "R22",
"wake": "L",
"operator_class": "ga"
},
{
"callsign": "DAL3636",
"aircraft_type": "DH8D",
"wake": "M",
"operator_class": "commercial"
}... | [
{
"speaker": "KMDW_APP",
"text": "November three seven, Chicago Midway Approach, radar contact, descend and maintain three thousand."
},
{
"speaker": "N37",
"text": "Descend and maintain three thousand, November three seven."
},
{
"speaker": "KMDW_APP",
"text": "Delta three six three... | grok-4.20-0309-non-reasoning | 2026-08-08T19:31:42.194619Z | p2 | t1 |
34fb0887b6e5522b412b59328e0796af8404514a | {
"icao": "KSMF",
"region": "us",
"phase": "center",
"aircraft": [
{
"callsign": "NKS2250",
"aircraft_type": "B744",
"wake": "H",
"operator_class": "commercial"
},
{
"callsign": "N7095",
"aircraft_type": "R22",
"wake": "L",
"operator_class": "ga"
}... | [
{
"speaker": "KSMF_CTR",
"text": "Spirit Wings two two five zero heavy, Oakland Center, radar contact, descend and maintain one zero thousand."
},
{
"speaker": "NKS2250",
"text": "Descend and maintain one zero thousand, Spirit Wings two two five zero heavy."
},
{
"speaker": "KSMF_CTR",
... | grok-4.20-0309-non-reasoning | 2026-08-08T19:31:42.288275Z | p2 | t1 |
d672877a9dc9e65dfb2e74bcf7f3e64313c25f1d | {
"icao": "KPVD",
"region": "us",
"phase": "tower",
"aircraft": [
{
"callsign": "JIA9309",
"aircraft_type": "A332",
"wake": "H",
"operator_class": "commercial"
},
{
"callsign": "N14",
"aircraft_type": "C208",
"wake": "L",
"operator_class": "ga"
},
... | [
{
"speaker": "KPVD_TWR",
"text": "UPS seven two five two heavy, Rhode Island Tf Green Tower, runway two three, line up and wait."
},
{
"speaker": "UPS7252",
"text": "Line up and wait runway two three, UPS seven two five two heavy."
},
{
"speaker": "KPVD_TWR",
"text": "Blue Streak nin... | grok-4.20-0309-non-reasoning | 2026-08-08T19:31:42.289792Z | p2 | t1 |
a4dc5dd02762434a93cb54016ba953c848180978 | {
"icao": "KMDW",
"region": "us",
"phase": "ground",
"aircraft": [
{
"callsign": "AWI9759",
"aircraft_type": "B789",
"wake": "H",
"operator_class": "commercial"
},
{
"callsign": "N17464",
"aircraft_type": "BE58",
"wake": "L",
"operator_class": "ga"
... | [
{
"speaker": "KMDW_GND",
"text": "Wisconsin nine seven five nine heavy, Midway Ground, runway one three center, taxi via Alpha Bravo, hold short of runway one three right, altimeter three zero two three."
},
{
"speaker": "AWI9759",
"text": "Taxi via Alpha Bravo, hold short of one three right, al... | grok-4.20-0309-non-reasoning | 2026-08-08T19:31:42.295717Z | p2 | t1 |
aef446c3c23d18dffe92bc5e981404ed3ab97689 | {
"icao": "KORD",
"region": "us",
"phase": "approach",
"aircraft": [
{
"callsign": "UPS5774",
"aircraft_type": "A30B",
"wake": "H",
"operator_class": "cargo"
},
{
"callsign": "N135",
"aircraft_type": "PA46",
"wake": "L",
"operator_class": "ga"
},
... | [
{
"speaker": "KORD_APP",
"text": "U P S five seven seven four heavy, Chicago Approach, radar contact, descend and maintain four thousand."
},
{
"speaker": "UPS5774",
"text": "Descend and maintain four thousand, U P S five seven seven four heavy."
},
{
"speaker": "KORD_APP",
"text": "... | grok-4.20-0309-non-reasoning | 2026-08-08T19:31:42.360110Z | p2 | t1 |
b4a824956ec0b4f9d9f9807dc4f5f1318d44559f | {
"icao": "KDTW",
"region": "us",
"phase": "approach",
"aircraft": [
{
"callsign": "EJM8327",
"aircraft_type": "GLF6",
"wake": "M",
"operator_class": "business"
}
],
"runway": "22R",
"sid_star": null,
"squawk": "5205",
"frequency_mhz": 123.35,
"weather": {
"wind_d... | [
{
"speaker": "KDTW_APP",
"text": "Jet Speed eight three two seven, Detroit Metro Approach, radar contact, descend and maintain four thousand."
},
{
"speaker": "EJM8327",
"text": "Descend and maintain four thousand, Jet Speed eight three two seven."
},
{
"speaker": "KDTW_APP",
"text":... | grok-4.20-0309-non-reasoning | 2026-08-08T19:31:42.404206Z | p2 | t1 |
877ad66de503b206994d96801c535147d9611c1e | {
"icao": "KBOS",
"region": "us",
"phase": "center",
"aircraft": [
{
"callsign": "N63193",
"aircraft_type": "PA46",
"wake": "L",
"operator_class": "ga"
},
{
"callsign": "JRE9847",
"aircraft_type": "A332",
"wake": "H",
"operator_class": "commercial"
... | [
{
"speaker": "KBOS_CTR",
"text": "Jet Share nine eight four seven heavy, Boston Center, descend and maintain one seven thousand."
},
{
"speaker": "JRE9847",
"text": "Down to one seven thousand, Jet Share nine eight four seven heavy."
},
{
"speaker": "KBOS_CTR",
"text": "Giant seven f... | grok-4.20-0309-non-reasoning | 2026-08-08T19:31:42.448010Z | p2 | t1 |
b0485724d958b626608a2aad8d53077fdea9f7a5 | {
"icao": "KMDW",
"region": "us",
"phase": "approach",
"aircraft": [
{
"callsign": "WIG3922",
"aircraft_type": "B74F",
"wake": "H",
"operator_class": "cargo"
},
{
"callsign": "N05766",
"aircraft_type": "PA28",
"wake": "L",
"operator_class": "ga"
},... | [
{
"speaker": "KMDW_APP",
"text": "Wiggins Airways three nine two two, Chicago Midway Approach, radar contact, descend and maintain three thousand."
},
{
"speaker": "WIG3922",
"text": "Descend and maintain three thousand, Wiggins Airways three nine two two."
},
{
"speaker": "KMDW_APP",
... | grok-4.20-0309-non-reasoning | 2026-08-08T19:31:42.451335Z | p2 | t1 |
d4a5c648055217f720f1170505db9d8e545ae6a4 | {
"icao": "KSFO",
"region": "us",
"phase": "approach",
"aircraft": [
{
"callsign": "ACA732",
"aircraft_type": "E170",
"wake": "M",
"operator_class": "commercial"
},
{
"callsign": "ENY4301",
"aircraft_type": "B77W",
"wake": "H",
"operator_class": "comme... | [
{
"speaker": "KSFO_APP",
"text": "Envoy four three zero one heavy, turn left heading zero eight zero, descend and maintain four thousand."
},
{
"speaker": "ENY4301",
"text": "Left heading zero eight zero, down to four thousand, Envoy four three zero one heavy."
},
{
"speaker": "KSFO_APP"... | grok-4.20-0309-non-reasoning | 2026-08-08T19:31:42.520116Z | p2 | t1 |
791b6f3db7daa8bac9357bb73c4cb780b7d4523a | {
"icao": "KSAN",
"region": "us",
"phase": "center",
"aircraft": [
{
"callsign": "N92322",
"aircraft_type": "R22",
"wake": "L",
"operator_class": "ga"
},
{
"callsign": "AIO5452",
"aircraft_type": "C30J",
"wake": "H",
"operator_class": "military"
},... | [
{
"speaker": "KSAN_CTR",
"text": "November nine two three two two, Los Angeles Center, radar contact, descend and maintain six thousand."
},
{
"speaker": "N92322",
"text": "Descend and maintain six thousand, November nine two three two two."
},
{
"speaker": "KSAN_CTR",
"text": "Air C... | grok-4.20-0309-non-reasoning | 2026-08-08T19:31:42.654208Z | p2 | t1 |
80e12d8f70074f336d50e0b6e3801740486234b7 | {
"icao": "KBNA",
"region": "us",
"phase": "tower",
"aircraft": [
{
"callsign": "EJA6314",
"aircraft_type": "CL60",
"wake": "M",
"operator_class": "business"
}
],
"runway": "20R",
"sid_star": null,
"squawk": "7401",
"frequency_mhz": 119.98,
"weather": {
"wind_dir_... | [
{
"speaker": "KBNA_TWR",
"text": "Execjet six three one four, Nashville Tower, runway two zero right, line up and wait."
},
{
"speaker": "EJA6314",
"text": "Line up and wait runway two zero right, Execjet six three one four."
},
{
"speaker": "KBNA_TWR",
"text": "Execjet six three one... | grok-4.20-0309-non-reasoning | 2026-08-08T19:31:42.671164Z | p2 | t1 |
e04c3dcab84cd75a17b8431442be3f9171b41636 | {
"icao": "KDCA",
"region": "us",
"phase": "approach",
"aircraft": [
{
"callsign": "N70546",
"aircraft_type": "C172",
"wake": "L",
"operator_class": "training"
},
{
"callsign": "EJA8957",
"aircraft_type": "CL60",
"wake": "M",
"operator_class": "busines... | [
{
"speaker": "KDCA_APP",
"text": "November seven zero five four six, Reagan Approach, radar contact, twelve miles northwest, descend and maintain three thousand."
},
{
"speaker": "N70546",
"text": "Descend and maintain three thousand, November seven zero five four six."
},
{
"speaker": "... | grok-4.20-0309-non-reasoning | 2026-08-08T19:31:42.750795Z | p2 | t1 |
f381cc6547e0e207bdf001b857db04583f337f1b | {
"icao": "KMYR",
"region": "us",
"phase": "ramp",
"aircraft": [
{
"callsign": "QXE1656",
"aircraft_type": "B763",
"wake": "H",
"operator_class": "commercial"
},
{
"callsign": "FDX484",
"aircraft_type": "A30B",
"wake": "H",
"operator_class": "cargo"
... | [
{
"speaker": "KMYR_RAMP",
"text": "Horizon Air one six five six heavy, Ramp, pushback approved, face south."
},
{
"speaker": "QXE1656",
"text": "Pushback approved facing south, Horizon Air one six five six heavy."
},
{
"speaker": "KMYR_RAMP",
"text": "Fedex seven six three two heavy,... | grok-4.20-0309-non-reasoning | 2026-08-08T19:31:42.752647Z | p2 | t1 |
746b1786b877dfb66f673694ccc104823279c7b4 | {
"icao": "KFLL",
"region": "us",
"phase": "approach",
"aircraft": [
{
"callsign": "LXJ8899",
"aircraft_type": "C25A",
"wake": "L",
"operator_class": "business"
},
{
"callsign": "FDX5937",
"aircraft_type": "B76F",
"wake": "H",
"operator_class": "cargo"... | [
{
"speaker": "KFLL_APP",
"text": "Fedex five nine three seven, Fort Lauderdale Approach, radar contact, descend and maintain four thousand."
},
{
"speaker": "FDX5937",
"text": "Descend and maintain four thousand, Fedex five nine three seven."
},
{
"speaker": "KFLL_APP",
"text": "Unit... | grok-4.20-0309-non-reasoning | 2026-08-08T19:31:42.961180Z | p2 | t1 |
7d4fc869dd794b0638a6aabf214e72fa6a98f368 | {
"icao": "KPDX",
"region": "us",
"phase": "approach",
"aircraft": [
{
"callsign": "AAL2011",
"aircraft_type": "A20N",
"wake": "M",
"operator_class": "commercial"
},
{
"callsign": "N39",
"aircraft_type": "R22",
"wake": "L",
"operator_class": "training"... | [
{
"speaker": "KPDX_APP",
"text": "American two zero one one, Portland Approach, radar contact, descend and maintain four thousand."
},
{
"speaker": "AAL2011",
"text": "Descend and maintain four thousand, American two zero one one."
},
{
"speaker": "KPDX_APP",
"text": "Execjet two fou... | grok-4.20-0309-non-reasoning | 2026-08-08T19:31:43.187990Z | p2 | t1 |
b583119bfebcf91e78012af37ec4023bf27c2439 | {
"icao": "KMSY",
"region": "us",
"phase": "approach",
"aircraft": [
{
"callsign": "DAL4242",
"aircraft_type": "B748",
"wake": "H",
"operator_class": "commercial"
},
{
"callsign": "EDV4536",
"aircraft_type": "BCS3",
"wake": "M",
"operator_class": "comm... | [
{
"speaker": "KMSY_APP",
"text": "Delta four two four two heavy, New Orleans Approach, radar contact, descend and maintain three thousand."
},
{
"speaker": "DAL4242",
"text": "Descend and maintain three thousand, Delta four two four two heavy."
},
{
"speaker": "KMSY_APP",
"text": "En... | grok-4.20-0309-non-reasoning | 2026-08-08T19:31:43.259411Z | p2 | t1 |
8f1921caa114d934ff0c6aa6267be8bca04095d8 | {
"icao": "PHNL",
"region": "us",
"phase": "ground",
"aircraft": [
{
"callsign": "AAL6301",
"aircraft_type": "AT72",
"wake": "M",
"operator_class": "commercial"
},
{
"callsign": "N16",
"aircraft_type": "PA28",
"wake": "L",
"operator_class": "ga"
},... | [
{
"speaker": "PHNL_GND",
"text": "American six three zero one, Ground, taxi to runway two two left via Mike November, hold short of runway two six right, altimeter two niner eight seven."
},
{
"speaker": "AAL6301",
"text": "Taxi two two left via Mike November, hold short of two six right, altime... | grok-4.20-0309-non-reasoning | 2026-08-08T19:31:43.271914Z | p2 | t1 |
6953077dbe065c63e62b56aa2c7b27ba5e17791d | {
"icao": "KMSP",
"region": "us",
"phase": "tower",
"aircraft": [
{
"callsign": "N673",
"aircraft_type": "DA42",
"wake": "L",
"operator_class": "ga"
},
{
"callsign": "SKW1567",
"aircraft_type": "E190",
"wake": "M",
"operator_class": "commercial"
},... | [
{
"speaker": "KMSP_TWR",
"text": "Skywest one five six seven, runway one seven, cleared for takeoff."
},
{
"speaker": "SKW1567",
"text": "Cleared for takeoff runway one seven, Skywest one five six seven."
},
{
"speaker": "KMSP_TWR",
"text": "Alaska six one four two heavy, line up and... | grok-4.20-0309-non-reasoning | 2026-08-08T19:31:43.289829Z | p2 | t1 |
7d83f4cc10219a354e961193cf276ab0150eb603 | {
"icao": "KPHX",
"region": "us",
"phase": "center",
"aircraft": [
{
"callsign": "N489",
"aircraft_type": "C182",
"wake": "L",
"operator_class": "ga"
},
{
"callsign": "PAC3305",
"aircraft_type": "B77F",
"wake": "H",
"operator_class": "cargo"
},
... | [
{
"speaker": "KPHX_CTR",
"text": "November four eight nine, Albuquerque Center, radar contact, maintain one zero thousand."
},
{
"speaker": "N489",
"text": "One zero thousand, November four eight nine."
},
{
"speaker": "KPHX_CTR",
"text": "Polar three three zero five heavy, descend a... | grok-4.20-0309-non-reasoning | 2026-08-08T19:31:43.328626Z | p2 | t1 |
4f85166f2d62f787fb9a167b2c30dd5d0759fccc | {
"icao": "KMSP",
"region": "us",
"phase": "approach",
"aircraft": [
{
"callsign": "N406",
"aircraft_type": "DA42",
"wake": "L",
"operator_class": "ga"
},
{
"callsign": "ASA3238",
"aircraft_type": "CRJ9",
"wake": "M",
"operator_class": "commercial"
... | [
{
"speaker": "KMSP_APP",
"text": "Alaska three two three eight, turn left heading two seven zero, descend and maintain four thousand."
},
{
"speaker": "ASA3238",
"text": "Left heading two seven zero, down to four thousand, Alaska three two three eight."
},
{
"speaker": "KMSP_APP",
"t... | grok-4.20-0309-non-reasoning | 2026-08-08T19:31:43.438768Z | p2 | t1 |
4bd89deda784d0cbadd4321de9873874f87f6ff3 | {
"icao": "KLAS",
"region": "us",
"phase": "approach",
"aircraft": [
{
"callsign": "SKW5553",
"aircraft_type": "A21N",
"wake": "M",
"operator_class": "commercial"
},
{
"callsign": "N1518",
"aircraft_type": "C208",
"wake": "L",
"operator_class": "ga"
... | [
{
"speaker": "KLAS_APP",
"text": "Skywest five five five three, Harry Reid Approach, radar contact, descend and maintain six thousand."
},
{
"speaker": "SKW5553",
"text": "Descend and maintain six thousand, Skywest five five five three."
},
{
"speaker": "N1518",
"text": "Harry Reid A... | grok-4.20-0309-non-reasoning | 2026-08-08T19:31:43.499789Z | p2 | t1 |
1f2610f18e656317aaf4c8a9ef7781a71054b418 | {
"icao": "KIAD",
"region": "us",
"phase": "tower",
"aircraft": [
{
"callsign": "AAL4856",
"aircraft_type": "B77W",
"wake": "H",
"operator_class": "commercial"
},
{
"callsign": "EJA8853",
"aircraft_type": "C56X",
"wake": "L",
"operator_class": "busines... | [
{
"speaker": "KIAD_TWR",
"text": "Execjet five five two seven, wind one eight eight at one six, visibility six, runway three zero, cleared for takeoff."
},
{
"speaker": "EJA5527",
"text": "Cleared for takeoff runway three zero, Execjet five five two seven."
},
{
"speaker": "KIAD_TWR",
... | grok-4.20-0309-non-reasoning | 2026-08-08T19:31:43.532823Z | p2 | t1 |
60ffa8336542b9d9f7683059ef9815e64e5b551d | {
"icao": "KIAH",
"region": "us",
"phase": "center",
"aircraft": [
{
"callsign": "DAL2491",
"aircraft_type": "E175",
"wake": "M",
"operator_class": "commercial"
},
{
"callsign": "SKW7736",
"aircraft_type": "B748",
"wake": "H",
"operator_class": "commer... | [
{
"speaker": "KIAH_CTR",
"text": "Delta two four nine one, Houston Center, radar contact, descend and maintain one zero thousand."
},
{
"speaker": "DAL2491",
"text": "Descend and maintain one zero thousand, Delta two four nine one."
},
{
"speaker": "KIAH_CTR",
"text": "Skywest seven ... | grok-4.20-0309-non-reasoning | 2026-08-08T19:31:43.589619Z | p2 | t1 |
0b4ae34a2f667653f954516c20c285f97d76c790 | {
"icao": "KSLC",
"region": "us",
"phase": "center",
"aircraft": [
{
"callsign": "N32",
"aircraft_type": "BE36",
"wake": "L",
"operator_class": "ga"
},
{
"callsign": "SWA9087",
"aircraft_type": "E75L",
"wake": "M",
"operator_class": "commercial"
},... | [
{
"speaker": "KSLC_CTR",
"text": "November three two, Salt Lake Center, radar contact, climb and maintain one three thousand."
},
{
"speaker": "N32",
"text": "Climb and maintain one three thousand, November three two."
},
{
"speaker": "KSLC_CTR",
"text": "Southwest nine zero eight se... | grok-4.20-0309-non-reasoning | 2026-08-08T19:31:43.824470Z | p2 | t1 |
21da630fb6a9d3b3a45d933c03a4c145d81e2766 | {
"icao": "KPHL",
"region": "us",
"phase": "tower",
"aircraft": [
{
"callsign": "N289",
"aircraft_type": "C172",
"wake": "L",
"operator_class": "ga"
},
{
"callsign": "N410",
"aircraft_type": "C172",
"wake": "L",
"operator_class": "ga"
},
{
... | [
{
"speaker": "KPHL_TWR",
"text": "November four one zero, Philadelphia Tower, runway two six, line up and wait."
},
{
"speaker": "N410",
"text": "Line up and wait runway two six, November four one zero."
},
{
"speaker": "KPHL_TWR",
"text": "Jetblue eight three two six, wind one eight... | grok-4.20-0309-non-reasoning | 2026-08-08T19:31:43.965135Z | p2 | t1 |
5e63968f9ce7bf6632efccff4b564c68d0332638 | {
"icao": "KSFO",
"region": "us",
"phase": "center",
"aircraft": [
{
"callsign": "SWA164",
"aircraft_type": "E195",
"wake": "M",
"operator_class": "commercial"
},
{
"callsign": "N59180",
"aircraft_type": "C172",
"wake": "L",
"operator_class": "ga"
... | [
{
"speaker": "KSFO_CTR",
"text": "Southwest one six four, Oakland Center, radar contact, climb and maintain flight level three five zero."
},
{
"speaker": "SWA164",
"text": "Climb and maintain flight level three five zero, Southwest one six four."
},
{
"speaker": "KSFO_CTR",
"text": ... | grok-4.20-0309-non-reasoning | 2026-08-08T19:31:44.019769Z | p2 | t1 |
dae817ddce7c869d25b469f6ae27338371330c5b | {
"icao": "KDEN",
"region": "us",
"phase": "center",
"aircraft": [
{
"callsign": "DAL9806",
"aircraft_type": "AT72",
"wake": "M",
"operator_class": "commercial"
},
{
"callsign": "N836",
"aircraft_type": "BE36",
"wake": "L",
"operator_class": "ga"
}... | [
{
"speaker": "KDEN_CTR",
"text": "Delta nine eight zero six, Denver Center, radar contact, descend and maintain one zero thousand."
},
{
"speaker": "DAL9806",
"text": "Descend and maintain one zero thousand, Delta nine eight zero six."
},
{
"speaker": "KDEN_CTR",
"text": "November ei... | grok-4.20-0309-non-reasoning | 2026-08-08T19:31:44.078184Z | p2 | t1 |
51aee25e20204abf4da7a2e79d3122317454c67b | {
"icao": "KEWR",
"region": "us",
"phase": "ramp",
"aircraft": [
{
"callsign": "N7584",
"aircraft_type": "R44",
"wake": "L",
"operator_class": "ga"
},
{
"callsign": "ASA6230",
"aircraft_type": "AT72",
"wake": "M",
"operator_class": "commercial"
},
... | [
{
"speaker": "KEWR_RAMP",
"text": "November seven five eight four, Newark Liberty Ramp, pushback approved, face south."
},
{
"speaker": "N7584",
"text": "Pushback approved facing south, November seven five eight four."
},
{
"speaker": "KEWR_RAMP",
"text": "Sun Devil one three zero fo... | grok-4.20-0309-non-reasoning | 2026-08-08T19:31:44.079639Z | p2 | t1 |
68424e8dc72d7e4b333f44e1a582e01ee8e01516 | {
"icao": "KBOS",
"region": "us",
"phase": "tower",
"aircraft": [
{
"callsign": "QID7439",
"aircraft_type": "K35R",
"wake": "H",
"operator_class": "military"
},
{
"callsign": "UAL955",
"aircraft_type": "A388",
"wake": "J",
"operator_class": "commercial... | [
{
"speaker": "KBOS_TWR",
"text": "Quid seven four three nine heavy, Logan Tower, runway two seven, line up and wait."
},
{
"speaker": "QID7439",
"text": "Line up and wait runway two seven, Quid seven four three nine heavy."
},
{
"speaker": "KBOS_TWR",
"text": "United nine five five s... | grok-4.20-0309-non-reasoning | 2026-08-08T19:31:44.084153Z | p2 | t1 |
f5df5e8b1caced56016466c7703f34f73d9f4837 | {
"icao": "KRDU",
"region": "us",
"phase": "center",
"aircraft": [
{
"callsign": "N407",
"aircraft_type": "SR22",
"wake": "L",
"operator_class": "training"
},
{
"callsign": "XOJ8462",
"aircraft_type": "PC12",
"wake": "L",
"operator_class": "business"
... | [
{
"speaker": "KRDU_CTR",
"text": "November four zero seven, Washington Center, radar contact, descend and maintain six thousand."
},
{
"speaker": "N407",
"text": "Down to six thousand, November four zero seven."
},
{
"speaker": "KRDU_CTR",
"text": "Exojet eight four six two, descend ... | grok-4.20-0309-non-reasoning | 2026-08-08T19:31:44.439900Z | p2 | t1 |
39e4fde8ceaa12fdfd3393b72047d25346b1a757 | {
"icao": "KRDU",
"region": "us",
"phase": "tower",
"aircraft": [
{
"callsign": "EJA6577",
"aircraft_type": "PC12",
"wake": "L",
"operator_class": "business"
},
{
"callsign": "N53046",
"aircraft_type": "C182",
"wake": "L",
"operator_class": "ga"
},... | [
{
"speaker": "KRDU_TWR",
"text": "Execjet six five seven seven, Raleigh-Durham Tower, runway three two, line up and wait."
},
{
"speaker": "EJA6577",
"text": "Line up and wait runway three two, Execjet six five seven seven."
},
{
"speaker": "KRDU_TWR",
"text": "Alaska five one zero f... | grok-4.20-0309-non-reasoning | 2026-08-08T19:31:44.522710Z | p2 | t1 |
48562ea19064c0f3e7e96ae74f49872fbcb8a3e0 | {
"icao": "KPHL",
"region": "us",
"phase": "approach",
"aircraft": [
{
"callsign": "N85621",
"aircraft_type": "BE58",
"wake": "L",
"operator_class": "ga"
}
],
"runway": "27L",
"sid_star": null,
"squawk": "6315",
"frequency_mhz": 124.39,
"weather": {
"wind_dir_deg"... | [
{
"speaker": "KPHL_APP",
"text": "November eight five six two one, Philadelphia Approach, radar contact, descend and maintain three thousand."
},
{
"speaker": "N85621",
"text": "Descend and maintain three thousand, November eight five six two one."
},
{
"speaker": "KPHL_APP",
"text":... | grok-4.20-0309-non-reasoning | 2026-08-08T19:31:44.540909Z | p2 | t1 |
1e66c81c790278361a5ea7886734adfb0b0a2580 | {
"icao": "KOKC",
"region": "us",
"phase": "approach",
"aircraft": [
{
"callsign": "N47102",
"aircraft_type": "PA46",
"wake": "L",
"operator_class": "ga"
},
{
"callsign": "UPS5583",
"aircraft_type": "MD11",
"wake": "H",
"operator_class": "cargo"
},... | [
{
"speaker": "KOKC_APP",
"text": "November four seven one zero two, Okc Will Rogers Approach, radar contact, descend and maintain three thousand."
},
{
"speaker": "N47102",
"text": "Descend and maintain three thousand, November four seven one zero two."
},
{
"speaker": "KOKC_APP",
"t... | grok-4.20-0309-non-reasoning | 2026-08-08T19:31:44.542119Z | p2 | t1 |
6f5dbbcc1fcf1f0217e2c5ad377d5089b8908b5b | {
"icao": "KMEM",
"region": "us",
"phase": "approach",
"aircraft": [
{
"callsign": "DAL4047",
"aircraft_type": "BCS1",
"wake": "M",
"operator_class": "commercial"
},
{
"callsign": "N26551",
"aircraft_type": "C172",
"wake": "L",
"operator_class": "ga"
... | [
{
"speaker": "KMEM_APP",
"text": "Delta four zero four seven, Memphis Approach, radar contact, descend and maintain three thousand."
},
{
"speaker": "DAL4047",
"text": "Descend and maintain three thousand, Delta four zero four seven."
},
{
"speaker": "N26551",
"text": "Memphis Approa... | grok-4.20-0309-non-reasoning | 2026-08-08T19:31:44.651649Z | p2 | t1 |
bb55d0f830115ab395067a2884397bdf6cc3f844 | {
"icao": "KLAX",
"region": "us",
"phase": "tower",
"aircraft": [
{
"callsign": "SKW5409",
"aircraft_type": "BCS1",
"wake": "M",
"operator_class": "commercial"
},
{
"callsign": "ABX9748",
"aircraft_type": "MD11",
"wake": "H",
"operator_class": "cargo"
... | [
{
"speaker": "KLAX_TWR",
"text": "Abex nine seven four eight heavy, Los Angeles Tower, runway two five right, cleared to land."
},
{
"speaker": "ABX9748",
"text": "Cleared to land runway two five right, Abex nine seven four eight heavy."
},
{
"speaker": "KLAX_TWR",
"text": "Skywest f... | grok-4.20-0309-non-reasoning | 2026-08-08T19:31:44.660573Z | p2 | t1 |
32b132e991aa46d90d8402add64029adce3025dc | {
"icao": "KGSP",
"region": "us",
"phase": "ramp",
"aircraft": [
{
"callsign": "N02",
"aircraft_type": "SR22",
"wake": "L",
"operator_class": "ga"
},
{
"callsign": "N982",
"aircraft_type": "DA40",
"wake": "L",
"operator_class": "ga"
},
{
... | [
{
"speaker": "KGSP_RAMP",
"text": "November zero two, Ramp, pushback approved, face south."
},
{
"speaker": "N02",
"text": "Pushback approved facing south, November zero two."
},
{
"speaker": "KGSP_RAMP",
"text": "Delta six four four eight, Ramp, pushback approved, face south."
},
... | grok-4.20-0309-non-reasoning | 2026-08-08T19:31:44.736878Z | p2 | t1 |
503804c7f7b8db6416c5a3da5868fbed3aa667c2 | {
"icao": "KMDW",
"region": "us",
"phase": "ramp",
"aircraft": [
{
"callsign": "N13407",
"aircraft_type": "DA40",
"wake": "L",
"operator_class": "ga"
},
{
"callsign": "SKW1933",
"aircraft_type": "B752",
"wake": "M",
"operator_class": "commercial"
}... | [
{
"speaker": "KMDW_RAMP",
"text": "November one three four zero seven, Midway Ramp, pushback approved, face south."
},
{
"speaker": "N13407",
"text": "Pushback approved facing south, November one three four zero seven."
},
{
"speaker": "KMDW_RAMP",
"text": "Skywest one nine three thr... | grok-4.20-0309-non-reasoning | 2026-08-08T19:31:44.768971Z | p2 | t1 |
dbdec51f253f9712890e8657a75dea72aa657bab | {
"icao": "KCLT",
"region": "us",
"phase": "tower",
"aircraft": [
{
"callsign": "SKW6194",
"aircraft_type": "A359",
"wake": "H",
"operator_class": "commercial"
},
{
"callsign": "SWA5707",
"aircraft_type": "CRJ9",
"wake": "M",
"operator_class": "commerc... | [
{
"speaker": "KCLT_TWR",
"text": "Southwest five seven zero seven, runway one eight center, line up and wait."
},
{
"speaker": "SWA5707",
"text": "Line up and wait runway one eight center, Southwest five seven zero seven."
},
{
"speaker": "KCLT_TWR",
"text": "Skywest six one nine fou... | grok-4.20-0309-non-reasoning | 2026-08-08T19:31:44.770199Z | p2 | t1 |
fe258aa17d961dd9f30a1c35a74c9006b7173e4f | {
"icao": "KMIA",
"region": "us",
"phase": "ramp",
"aircraft": [
{
"callsign": "JTZ4553",
"aircraft_type": "A388",
"wake": "J",
"operator_class": "commercial"
},
{
"callsign": "LXJ2184",
"aircraft_type": "C68A",
"wake": "M",
"operator_class": "business... | [
{
"speaker": "KMIA_RAMP",
"text": "Steel Jet four five five three super, Ramp, pushback approved, face south."
},
{
"speaker": "JTZ4553",
"text": "Pushback approved facing south, Steel Jet four five five three super."
},
{
"speaker": "KMIA_RAMP",
"text": "Flexjet two one eight four, ... | grok-4.20-0309-non-reasoning | 2026-08-08T19:31:44.780288Z | p2 | t1 |
5bed11580ef2b71261c4fa0d89cd7ed8a293aa24 | {
"icao": "KLGA",
"region": "us",
"phase": "center",
"aircraft": [
{
"callsign": "EJA6834",
"aircraft_type": "C25A",
"wake": "L",
"operator_class": "business"
},
{
"callsign": "N3517",
"aircraft_type": "C182",
"wake": "L",
"operator_class": "ga"
},... | [
{
"speaker": "KLGA_CTR",
"text": "Execjet six eight three four, New York Center, radar contact, descend and maintain one zero thousand."
},
{
"speaker": "EJA6834",
"text": "Descend and maintain one zero thousand, Execjet six eight three four."
},
{
"speaker": "KLGA_CTR",
"text": "Nov... | grok-4.20-0309-non-reasoning | 2026-08-08T19:31:44.795215Z | p2 | t1 |
8725b2bb55c5ac358a29ca58139887b475e87e37 | {
"icao": "KPHL",
"region": "us",
"phase": "ground",
"aircraft": [
{
"callsign": "N4458",
"aircraft_type": "PA46",
"wake": "L",
"operator_class": "ga"
},
{
"callsign": "QID7702",
"aircraft_type": "K35R",
"wake": "H",
"operator_class": "military"
},... | [
{
"speaker": "KPHL_GND",
"text": "Quid seven seven zero two, Philadelphia Ground, taxi to runway two seven right via Alpha, hold short of runway one seven."
},
{
"speaker": "QID7702",
"text": "Taxi two seven right via Alpha, hold short of one seven, Quid seven seven zero two."
},
{
"spea... | grok-4.20-0309-non-reasoning | 2026-08-08T19:31:44.810314Z | p2 | t1 |
78f2cbe53fdab0d33cfd637d7284a39353102823 | {
"icao": "KRNO",
"region": "us",
"phase": "approach",
"aircraft": [
{
"callsign": "LXJ7508",
"aircraft_type": "C56X",
"wake": "L",
"operator_class": "business"
},
{
"callsign": "SWA3278",
"aircraft_type": "B744",
"wake": "H",
"operator_class": "commer... | [
{
"speaker": "KRNO_APP",
"text": "Flexjet seven five zero eight, Reno Approach, radar contact, descend and maintain seven thousand."
},
{
"speaker": "LXJ7508",
"text": "Descend and maintain seven thousand, Flexjet seven five zero eight."
},
{
"speaker": "KRNO_APP",
"text": "Southwest... | grok-4.20-0309-non-reasoning | 2026-08-08T19:31:44.815266Z | p2 | t1 |
5096634ce9cea2dd404d6b5f4eea155913a34215 | {
"icao": "KROC",
"region": "us",
"phase": "center",
"aircraft": [
{
"callsign": "JIA9177",
"aircraft_type": "B752",
"wake": "M",
"operator_class": "commercial"
},
{
"callsign": "COAST6247",
"aircraft_type": "H60",
"wake": "M",
"operator_class": "milit... | [
{
"speaker": "KROC_CTR",
"text": "Blue Streak nine one seven seven, Cleveland Center, radar contact, descend and maintain one zero thousand."
},
{
"speaker": "JIA9177",
"text": "Descend and maintain one zero thousand, Blue Streak nine one seven seven."
},
{
"speaker": "KROC_CTR",
"te... | grok-4.20-0309-non-reasoning | 2026-08-08T19:31:44.973371Z | p2 | t1 |
878798072ea924b8964b3dc616d49ed81cade633 | {
"icao": "KCLT",
"region": "us",
"phase": "tower",
"aircraft": [
{
"callsign": "NKS5892",
"aircraft_type": "E175",
"wake": "M",
"operator_class": "commercial"
},
{
"callsign": "N368",
"aircraft_type": "R22",
"wake": "L",
"operator_class": "training"
... | [
{
"speaker": "KCLT_TWR",
"text": "Spirit Wings five eight nine two, Charlotte Douglas Tower, runway three six left, line up and wait."
},
{
"speaker": "NKS5892",
"text": "Line up and wait runway three six left, Spirit Wings five eight nine two."
},
{
"speaker": "KCLT_TWR",
"text": "N... | grok-4.20-0309-non-reasoning | 2026-08-08T19:31:45.032248Z | p2 | t1 |
4fcfc3799eab72b9c0d9d4aaa5151c00495f5e02 | {
"icao": "KCHS",
"region": "us",
"phase": "ramp",
"aircraft": [
{
"callsign": "N0641",
"aircraft_type": "R44",
"wake": "L",
"operator_class": "ga"
},
{
"callsign": "SKW991",
"aircraft_type": "A320",
"wake": "M",
"operator_class": "commercial"
}
... | [
{
"speaker": "KCHS_RAMP",
"text": "November zero six four one, Ramp, pushback approved, face north."
},
{
"speaker": "N0641",
"text": "Pushback approved facing north, November zero six four one."
},
{
"speaker": "KCHS_RAMP",
"text": "November zero six four one, contact ground one thr... | grok-4.20-0309-non-reasoning | 2026-08-08T19:31:45.095166Z | p2 | t1 |
bf5a4c571a57ca6c04d3d6a067c8b112f2fbd796 | {
"icao": "KBNA",
"region": "us",
"phase": "approach",
"aircraft": [
{
"callsign": "SWA4619",
"aircraft_type": "A343",
"wake": "H",
"operator_class": "commercial"
},
{
"callsign": "N8016",
"aircraft_type": "R22",
"wake": "L",
"operator_class": "ga"
... | [
{
"speaker": "KBNA_APP",
"text": "Southwest four six one nine heavy, Nashville Approach, radar contact, descend and maintain three thousand."
},
{
"speaker": "SWA4619",
"text": "Descend and maintain three thousand, Southwest four six one nine heavy."
},
{
"speaker": "KBNA_APP",
"text... | grok-4.20-0309-non-reasoning | 2026-08-08T19:31:45.157675Z | p2 | t1 |
7f9d1d4fa9bf6082c3791f2c1078d07852a0708a | {
"icao": "KORD",
"region": "us",
"phase": "center",
"aircraft": [
{
"callsign": "N802",
"aircraft_type": "C172",
"wake": "L",
"operator_class": "ga"
},
{
"callsign": "KLM605",
"aircraft_type": "B78X",
"wake": "H",
"operator_class": "commercial"
},... | [
{
"speaker": "KORD_CTR",
"text": "November eight zero two, Chicago Center, radar contact, climb and maintain flight level two three zero."
},
{
"speaker": "N802",
"text": "Climb and maintain flight level two three zero, November eight zero two."
},
{
"speaker": "KORD_CTR",
"text": "K... | grok-4.20-0309-non-reasoning | 2026-08-08T19:31:45.289168Z | p2 | t1 |
9981184a77f60a97cf84112cd1566cc5a634f8ec | {
"icao": "KSTL",
"region": "us",
"phase": "approach",
"aircraft": [
{
"callsign": "UPS2966",
"aircraft_type": "MD11",
"wake": "H",
"operator_class": "cargo"
},
{
"callsign": "N4479",
"aircraft_type": "BE36",
"wake": "L",
"operator_class": "ga"
},
... | [
{
"speaker": "KSTL_APP",
"text": "U P S two nine six six heavy, St Louis Approach, descend and maintain four thousand, altimeter two niner eight one."
},
{
"speaker": "UPS2966",
"text": "Descend and maintain four thousand, altimeter two niner eight one, U P S two nine six six heavy."
},
{
... | grok-4.20-0309-non-reasoning | 2026-08-08T19:31:45.358913Z | p2 | t1 |
4ac2757a6739f49db289f65e8faaca2ccf6e3fc5 | {
"icao": "KBOS",
"region": "us",
"phase": "ground",
"aircraft": [
{
"callsign": "N37416",
"aircraft_type": "DA42",
"wake": "L",
"operator_class": "ga"
},
{
"callsign": "N426",
"aircraft_type": "C182",
"wake": "L",
"operator_class": "ga"
},
{
... | [
{
"speaker": "KBOS_GND",
"text": "November three seven four one six, Ground, taxi to runway two two right via Alpha, hold short of runway two two right."
},
{
"speaker": "N37416",
"text": "Taxi to runway two two right via Alpha, hold short of two two right, November three seven four one six."
... | grok-4.20-0309-non-reasoning | 2026-08-08T19:31:45.364099Z | p2 | t1 |
3fe240f6c0d7f3279e4a5b897d9a1b91bdf51b8f | {
"icao": "KMIA",
"region": "us",
"phase": "ground",
"aircraft": [
{
"callsign": "N01",
"aircraft_type": "BE58",
"wake": "L",
"operator_class": "training"
},
{
"callsign": "FFT9152",
"aircraft_type": "CRJ2",
"wake": "M",
"operator_class": "commercial"
... | [
{
"speaker": "KMIA_GND",
"text": "November zero one, Miami Ground, taxi to runway two seven via Alpha, hold short of runway three zero."
},
{
"speaker": "N01",
"text": "Taxi to runway two seven via Alpha, hold short of three zero, November zero one."
},
{
"speaker": "KMIA_GND",
"text... | grok-4.20-0309-non-reasoning | 2026-08-08T19:31:45.504361Z | p2 | t1 |
dfe97a5d619b5c72a8ac7c9abeb581cd8bce79a0 | {
"icao": "KPHL",
"region": "us",
"phase": "tower",
"aircraft": [
{
"callsign": "N828",
"aircraft_type": "C182",
"wake": "L",
"operator_class": "ga"
},
{
"callsign": "SKW7580",
"aircraft_type": "DH8D",
"wake": "M",
"operator_class": "commercial"
}
... | [
{
"speaker": "KPHL_TWR",
"text": "Skywest seven five eight zero, runway one seven, cleared to land."
},
{
"speaker": "SKW7580",
"text": "Cleared to land runway one seven, Skywest seven five eight zero."
},
{
"speaker": "KPHL_TWR",
"text": "November eight two eight, runway one seven, ... | grok-4.20-0309-non-reasoning | 2026-08-08T19:31:45.567237Z | p2 | t1 |
028ba16b6b950938f3a356732c12fc37232f9f37 | {
"icao": "KMIA",
"region": "us",
"phase": "ramp",
"aircraft": [
{
"callsign": "AAL1463",
"aircraft_type": "A333",
"wake": "H",
"operator_class": "commercial"
}
],
"runway": "26R",
"sid_star": null,
"squawk": "7043",
"frequency_mhz": 129.72,
"weather": {
"wind_dir... | [
{
"speaker": "KMIA_RAMP",
"text": "American one four six three heavy, Miami Ramp, pushback approved, face south."
},
{
"speaker": "AAL1463",
"text": "Pushback approved facing south, American one four six three heavy."
},
{
"speaker": "KMIA_RAMP",
"text": "American one four six three ... | grok-4.20-0309-non-reasoning | 2026-08-08T19:31:45.609730Z | p2 | t1 |
446ac17a1e6425d5c4bda1da4d80147e2d8c6f7a | {
"icao": "KSJC",
"region": "us",
"phase": "approach",
"aircraft": [
{
"callsign": "LXJ7521",
"aircraft_type": "C56X",
"wake": "L",
"operator_class": "business"
},
{
"callsign": "N86",
"aircraft_type": "R44",
"wake": "L",
"operator_class": "ga"
}
... | [
{
"speaker": "KSJC_APP",
"text": "Flexjet seven five two one, Norman Y Mineta San Jose Approach, radar contact, descend and maintain three thousand."
},
{
"speaker": "LXJ7521",
"text": "Descend and maintain three thousand, Flexjet seven five two one."
},
{
"speaker": "KSJC_APP",
"tex... | grok-4.20-0309-non-reasoning | 2026-08-08T19:31:45.712596Z | p2 | t1 |
7956eecbea9af6db9476ac4cae42d1ba877e6a8e | {
"icao": "PHNL",
"region": "us",
"phase": "approach",
"aircraft": [
{
"callsign": "GUARD4499",
"aircraft_type": "K35R",
"wake": "H",
"operator_class": "military"
},
{
"callsign": "AAL6102",
"aircraft_type": "A346",
"wake": "H",
"operator_class": "comm... | [
{
"speaker": "PHNL_APP",
"text": "Guard four four nine nine, Daniel K Inouye Approach, radar contact, descend and maintain three thousand."
},
{
"speaker": "GUARD4499",
"text": "Descend and maintain three thousand, Guard four four nine nine."
},
{
"speaker": "PHNL_APP",
"text": "Sout... | grok-4.20-0309-non-reasoning | 2026-08-08T19:31:45.766576Z | p2 | t1 |
1c134f43351e6b55eadd83e15f6a5eb400aaf0ed | {
"icao": "KLAS",
"region": "us",
"phase": "ground",
"aircraft": [
{
"callsign": "SAM3569",
"aircraft_type": "C30J",
"wake": "H",
"operator_class": "military"
},
{
"callsign": "SWA2027",
"aircraft_type": "B763",
"wake": "H",
"operator_class": "commerci... | [
{
"speaker": "KLAS_GND",
"text": "Sam three five six nine heavy, Ground, taxi to runway zero eight right via Alpha, hold short of runway zero one left."
},
{
"speaker": "SAM3569",
"text": "Taxi to zero eight right via Alpha, hold short of zero one left, Sam three five six nine heavy."
},
{
... | grok-4.20-0309-non-reasoning | 2026-08-08T19:31:45.880895Z | p2 | t1 |
a6d79dc209520f127daed06fff1f07b89287dde2 | {
"icao": "KATL",
"region": "us",
"phase": "ramp",
"aircraft": [
{
"callsign": "DAL3122",
"aircraft_type": "B763",
"wake": "H",
"operator_class": "commercial"
},
{
"callsign": "JIA8859",
"aircraft_type": "DH8D",
"wake": "M",
"operator_class": "commerci... | [
{
"speaker": "KATL_RAMP",
"text": "Delta three one two two heavy, Ramp, pushback approved, face south."
},
{
"speaker": "DAL3122",
"text": "Pushback approved facing south, Delta three one two two heavy."
},
{
"speaker": "KATL_RAMP",
"text": "Blue Streak eight eight five nine, Ramp, h... | grok-4.20-0309-non-reasoning | 2026-08-08T19:31:46.020616Z | p2 | t1 |
a03e57148b9d67a00ead023bfb4a23c21392a518 | {
"icao": "KCLE",
"region": "us",
"phase": "approach",
"aircraft": [
{
"callsign": "JIA3919",
"aircraft_type": "E170",
"wake": "M",
"operator_class": "commercial"
},
{
"callsign": "DCM1910",
"aircraft_type": "B752",
"wake": "M",
"operator_class": "comm... | [
{
"speaker": "KCLE_APP",
"text": "Blue Streak three nine one nine, Cleveland Approach, radar contact, descend and maintain four thousand."
},
{
"speaker": "JIA3919",
"text": "Descend and maintain four thousand, Blue Streak three nine one nine."
},
{
"speaker": "KCLE_APP",
"text": "Do... | grok-4.20-0309-non-reasoning | 2026-08-08T19:31:46.282892Z | p2 | t1 |
abb053734ecf686a88440bf2b177997c4a24d534 | {
"icao": "KIAH",
"region": "us",
"phase": "approach",
"aircraft": [
{
"callsign": "LXJ3705",
"aircraft_type": "BE20",
"wake": "L",
"operator_class": "business"
},
{
"callsign": "AWI557",
"aircraft_type": "B39M",
"wake": "M",
"operator_class": "commerc... | [
{
"speaker": "KIAH_APP",
"text": "Flexjet three seven zero five, Houston Approach, radar contact, twelve miles northwest, descend and maintain three thousand."
},
{
"speaker": "LXJ3705",
"text": "Descend and maintain three thousand, Flexjet three seven zero five."
},
{
"speaker": "KIAH_A... | grok-4.20-0309-non-reasoning | 2026-08-08T19:31:46.394050Z | p2 | t1 |
7fca5a5e17acbaf316cb80c1b69a89e7bfee8255 | {
"icao": "KMDW",
"region": "us",
"phase": "ramp",
"aircraft": [
{
"callsign": "EJA8783",
"aircraft_type": "PC12",
"wake": "L",
"operator_class": "business"
},
{
"callsign": "N741",
"aircraft_type": "DA40",
"wake": "L",
"operator_class": "ga"
}
]... | [
{
"speaker": "KMDW_RAMP",
"text": "Execjet eight seven eight three, Midway Ramp, pushback approved, face south."
},
{
"speaker": "EJA8783",
"text": "Pushback approved facing south, Execjet eight seven eight three."
},
{
"speaker": "N741",
"text": "November seven four one, ready to ta... | grok-4.20-0309-non-reasoning | 2026-08-08T19:31:46.403977Z | p2 | t1 |
a99113b129579100da3a6685989c623d8748bfaf | {
"icao": "KTUS",
"region": "us",
"phase": "approach",
"aircraft": [
{
"callsign": "N003",
"aircraft_type": "C208",
"wake": "L",
"operator_class": "ga"
}
],
"runway": "11L",
"sid_star": null,
"squawk": "5421",
"frequency_mhz": 122.41,
"weather": {
"wind_dir_deg": ... | [
{
"speaker": "KTUS_APP",
"text": "November zero zero three, Tucson Approach, radar contact, descend and maintain four thousand."
},
{
"speaker": "N003",
"text": "Descend and maintain four thousand, November zero zero three."
},
{
"speaker": "KTUS_APP",
"text": "November zero zero thr... | grok-4.20-0309-non-reasoning | 2026-08-08T19:31:46.462236Z | p2 | t1 |
3719be8a174db8e913ed92428c3e8139d2e03431 | {
"icao": "KDTW",
"region": "us",
"phase": "center",
"aircraft": [
{
"callsign": "DAL1056",
"aircraft_type": "E170",
"wake": "M",
"operator_class": "commercial"
},
{
"callsign": "NKS8138",
"aircraft_type": "AT72",
"wake": "M",
"operator_class": "commer... | [
{
"speaker": "KDTW_CTR",
"text": "Delta one zero five six, Cleveland Center, radar contact, descend and maintain flight level two four zero."
},
{
"speaker": "DAL1056",
"text": "Descend and maintain flight level two four zero, Delta one zero five six."
},
{
"speaker": "KDTW_CTR",
"te... | grok-4.20-0309-non-reasoning | 2026-08-08T19:31:46.488510Z | p2 | t1 |
c034be0733d48e2bf1ef7afb0580c32175974262 | {
"icao": "KBOI",
"region": "us",
"phase": "tower",
"aircraft": [
{
"callsign": "FDX6522",
"aircraft_type": "B76F",
"wake": "H",
"operator_class": "cargo"
},
{
"callsign": "FDX8924",
"aircraft_type": "A30B",
"wake": "H",
"operator_class": "cargo"
}... | [
{
"speaker": "KBOI_TWR",
"text": "Fedex eight nine two four, Boise Tower, runway two eight right, line up and wait."
},
{
"speaker": "FDX8924",
"text": "Line up and wait runway two eight right, Fedex eight nine two four."
},
{
"speaker": "KBOI_TWR",
"text": "Fedex six five two two he... | grok-4.20-0309-non-reasoning | 2026-08-08T19:31:46.560103Z | p2 | t1 |
cbacc1e360a76587a6f68cbb4323b93847040929 | {
"icao": "KSLC",
"region": "us",
"phase": "ramp",
"aircraft": [
{
"callsign": "AAL6619",
"aircraft_type": "B744",
"wake": "H",
"operator_class": "commercial"
},
{
"callsign": "JIA2159",
"aircraft_type": "A319",
"wake": "M",
"operator_class": "commerci... | [
{
"speaker": "KSLC_RAMP",
"text": "American six six one nine heavy, Ramp, pushback approved, face south."
},
{
"speaker": "AAL6619",
"text": "Pushback approved facing south, American six six one nine heavy."
},
{
"speaker": "KSLC_RAMP",
"text": "Brickyard two seven seven eight, Ramp,... | grok-4.20-0309-non-reasoning | 2026-08-08T19:31:46.759524Z | p2 | t1 |
ea7dccf8e2a65db674db20523e43e3915d8e2cff | {
"icao": "KBOI",
"region": "us",
"phase": "tower",
"aircraft": [
{
"callsign": "SWA6573",
"aircraft_type": "A319",
"wake": "M",
"operator_class": "commercial"
},
{
"callsign": "RPA4250",
"aircraft_type": "B752",
"wake": "M",
"operator_class": "commerc... | [
{
"speaker": "KBOI_TWR",
"text": "Southwest six five seven three, Boise Tower, runway two eight right, line up and wait."
},
{
"speaker": "SWA6573",
"text": "Line up and wait runway two eight right, Southwest six five seven three."
},
{
"speaker": "KBOI_TWR",
"text": "Brickyard four ... | grok-4.20-0309-non-reasoning | 2026-08-08T19:31:46.767772Z | p2 | t1 |
7177db338aad91f08040207effdf81f1d68cba24 | {
"icao": "KPHL",
"region": "us",
"phase": "center",
"aircraft": [
{
"callsign": "N52074",
"aircraft_type": "PA28",
"wake": "L",
"operator_class": "ga"
},
{
"callsign": "SKW588",
"aircraft_type": "A388",
"wake": "J",
"operator_class": "commercial"
... | [
{
"speaker": "KPHL_CTR",
"text": "November five two zero seven four, New York Center, radar contact, climb and maintain one zero thousand."
},
{
"speaker": "N52074",
"text": "Climb and maintain one zero thousand, November five two zero seven four."
},
{
"speaker": "KPHL_CTR",
"text":... | grok-4.20-0309-non-reasoning | 2026-08-08T19:31:46.803916Z | p2 | t1 |
20fb8d5a0cfdf0ac812b1a94c3853ab8348eff6c | {
"icao": "PANC",
"region": "us",
"phase": "tower",
"aircraft": [
{
"callsign": "N965",
"aircraft_type": "R44",
"wake": "L",
"operator_class": "ga"
},
{
"callsign": "N395",
"aircraft_type": "PA28",
"wake": "L",
"operator_class": "training"
},
{... | [
{
"speaker": "PANC_TWR",
"text": "Volunteer four seven two, Ted Stevens Anchorage Tower, runway two five right, line up and wait."
},
{
"speaker": "VTE472",
"text": "Line up and wait runway two five right, Volunteer four seven two."
},
{
"speaker": "PANC_TWR",
"text": "November nine ... | grok-4.20-0309-non-reasoning | 2026-08-08T19:31:46.824692Z | p2 | t1 |
91dc86068f4715170afcfce6bccf2cd4bb1d4b05 | {
"icao": "KPVD",
"region": "us",
"phase": "ramp",
"aircraft": [
{
"callsign": "DAL8064",
"aircraft_type": "A332",
"wake": "H",
"operator_class": "commercial"
},
{
"callsign": "EJA3744",
"aircraft_type": "BE30",
"wake": "L",
"operator_class": "business... | [
{
"speaker": "KPVD_RAMP",
"text": "Delta eight zero six four heavy, Rhode Island ramp, pushback approved, face south."
},
{
"speaker": "DAL8064",
"text": "Pushback approved facing south, Delta eight zero six four heavy."
},
{
"speaker": "KPVD_RAMP",
"text": "Execjet three seven four ... | grok-4.20-0309-non-reasoning | 2026-08-08T19:31:46.858722Z | p2 | t1 |
1c00923237318b159f78e87a9c4df24de41174d6 | {
"icao": "KDTW",
"region": "us",
"phase": "tower",
"aircraft": [
{
"callsign": "CSB6578",
"aircraft_type": "CRJ7",
"wake": "M",
"operator_class": "commercial"
},
{
"callsign": "LFA5100",
"aircraft_type": "E190",
"wake": "M",
"operator_class": "commerc... | [
{
"speaker": "KDTW_TWR",
"text": "Bucky five one zero zero, Detroit Metro Wayne County Tower, runway zero three right, cleared to land."
},
{
"speaker": "LFA5100",
"text": "Cleared to land zero three right, Bucky five one zero zero."
},
{
"speaker": "KDTW_TWR",
"text": "Cargo South s... | grok-4.20-0309-non-reasoning | 2026-08-08T19:31:46.860568Z | p2 | t1 |
e5b45e8c40034bdf57edb1f7c3b0e7d8471f915f | {
"icao": "KSBA",
"region": "us",
"phase": "tower",
"aircraft": [
{
"callsign": "ARMY6368",
"aircraft_type": "H60",
"wake": "M",
"operator_class": "military"
},
{
"callsign": "N8709",
"aircraft_type": "DA42",
"wake": "L",
"operator_class": "ga"
},
... | [
{
"speaker": "KSBA_TWR",
"text": "Army six three six eight, Santa Barbara Tower, runway one five right, line up and wait."
},
{
"speaker": "ARMY6368",
"text": "Line up and wait runway one five right, Army six three six eight."
},
{
"speaker": "KSBA_TWR",
"text": "November eight seven... | grok-4.20-0309-non-reasoning | 2026-08-08T19:31:46.981846Z | p2 | t1 |
4a1598741833b89b30161f7e9272c1896a23c710 | {
"icao": "KEWR",
"region": "us",
"phase": "approach",
"aircraft": [
{
"callsign": "SWA3277",
"aircraft_type": "A359",
"wake": "H",
"operator_class": "commercial"
},
{
"callsign": "N65",
"aircraft_type": "DA42",
"wake": "L",
"operator_class": "ga"
... | [
{
"speaker": "KEWR_APP",
"text": "Southwest three two seven seven heavy, Newark Liberty Approach, radar contact, descend and maintain four thousand."
},
{
"speaker": "SWA3277",
"text": "Descend and maintain four thousand, Southwest three two seven seven heavy."
},
{
"speaker": "N65",
... | grok-4.20-0309-non-reasoning | 2026-08-08T19:31:47.025054Z | p2 | t1 |
224ae92975ad64d4f50a91a2a665d8ba60a03be3 | {
"icao": "KMIA",
"region": "us",
"phase": "approach",
"aircraft": [
{
"callsign": "SKQ6448",
"aircraft_type": "A333",
"wake": "H",
"operator_class": "commercial"
},
{
"callsign": "N43132",
"aircraft_type": "R44",
"wake": "L",
"operator_class": "ga"
... | [
{
"speaker": "KMIA_APP",
"text": "Skylab six four four eight, Miami Approach, radar contact, descend and maintain four thousand."
},
{
"speaker": "SKQ6448",
"text": "Descend and maintain four thousand, Skylab six four four eight."
},
{
"speaker": "KMIA_APP",
"text": "Fedex five eight... | grok-4.20-0309-non-reasoning | 2026-08-08T19:31:47.068355Z | p2 | t1 |
d7ceb56bc2a98d7ffa81e0448c7562d23032e5f4 | {
"icao": "KPDX",
"region": "us",
"phase": "approach",
"aircraft": [
{
"callsign": "ASA2803",
"aircraft_type": "B77W",
"wake": "H",
"operator_class": "commercial"
}
],
"runway": "10R",
"sid_star": null,
"squawk": "7415",
"frequency_mhz": 126.25,
"weather": {
"wind... | [
{
"speaker": "KPDX_APP",
"text": "Alaska two eight zero three heavy, Portland Approach, radar contact, descend and maintain four thousand."
},
{
"speaker": "ASA2803",
"text": "Descend and maintain four thousand, Alaska two eight zero three heavy."
},
{
"speaker": "KPDX_APP",
"text": ... | grok-4.20-0309-non-reasoning | 2026-08-08T19:31:47.118994Z | p2 | t1 |
3d6aa604744ad5d7157745040387b904b0c13802 | {
"icao": "KBNA",
"region": "us",
"phase": "center",
"aircraft": [
{
"callsign": "N96582",
"aircraft_type": "PA28",
"wake": "L",
"operator_class": "training"
},
{
"callsign": "N04",
"aircraft_type": "C172",
"wake": "L",
"operator_class": "ga"
}
]... | [
{
"speaker": "KBNA_CTR",
"text": "November nine six five eight two, Memphis Center, radar contact, maintain four thousand."
},
{
"speaker": "N96582",
"text": "Maintain four thousand, November nine six five eight two."
},
{
"speaker": "N04",
"text": "Memphis Center, November zero four... | grok-4.20-0309-non-reasoning | 2026-08-08T19:31:47.172570Z | p2 | t1 |
23073a90bde2da369e5b2d872bd6f26ec7d1a770 | {
"icao": "KATL",
"region": "us",
"phase": "ground",
"aircraft": [
{
"callsign": "PAT6130",
"aircraft_type": "GLEX",
"wake": "M",
"operator_class": "business"
},
{
"callsign": "N54",
"aircraft_type": "R22",
"wake": "L",
"operator_class": "ga"
},
... | [
{
"speaker": "KATL_GND",
"text": "Pat six one three zero, Hartsfield Jackson Atlanta Ground, taxi to runway one zero via Mike November, hold short of runway nine right, altimeter three zero zero four."
},
{
"speaker": "PAT6130",
"text": "Taxi to runway one zero via Mike November, hold short of n... | grok-4.20-0309-non-reasoning | 2026-08-08T19:31:47.495620Z | p2 | t1 |
53b24967164f06d909810bb5a3aea75ddb6c735c | {
"icao": "KMIA",
"region": "us",
"phase": "center",
"aircraft": [
{
"callsign": "SWA8029",
"aircraft_type": "E190",
"wake": "M",
"operator_class": "commercial"
},
{
"callsign": "N96915",
"aircraft_type": "R22",
"wake": "L",
"operator_class": "ga"
... | [
{
"speaker": "KMIA_CTR",
"text": "Southwest eight zero two nine, Miami Center, radar contact, climb and maintain flight level two seven zero."
},
{
"speaker": "SWA8029",
"text": "Climb and maintain flight level two seven zero, Southwest eight zero two nine."
},
{
"speaker": "KMIA_CTR",
... | grok-4.20-0309-non-reasoning | 2026-08-08T19:31:47.531101Z | p2 | t1 |
2338cd87fcdabaf53a0eb18ee2632ece046e49e6 | {
"icao": "KMSP",
"region": "us",
"phase": "tower",
"aircraft": [
{
"callsign": "N17",
"aircraft_type": "BE58",
"wake": "L",
"operator_class": "ga"
},
{
"callsign": "AAY8581",
"aircraft_type": "B744",
"wake": "H",
"operator_class": "commercial"
},
... | [
{
"speaker": "KMSP_TWR",
"text": "Allegiant eight five eight one heavy, runway one two left, line up and wait."
},
{
"speaker": "AAY8581",
"text": "Line up and wait runway one two left, Allegiant eight five eight one heavy."
},
{
"speaker": "KMSP_TWR",
"text": "November one seven, Mi... | grok-4.20-0309-non-reasoning | 2026-08-08T19:31:47.616234Z | p2 | t1 |
77973e60dbb2139eef32766151eb19ebc89510ea | {
"icao": "KSFO",
"region": "us",
"phase": "approach",
"aircraft": [
{
"callsign": "UAL1939",
"aircraft_type": "A21N",
"wake": "M",
"operator_class": "commercial"
},
{
"callsign": "GTI9517",
"aircraft_type": "C208",
"wake": "L",
"operator_class": "carg... | [
{
"speaker": "KSFO_APP",
"text": "United one nine three nine, San Francisco Approach, radar contact, descend and maintain four thousand."
},
{
"speaker": "UAL1939",
"text": "Descend and maintain four thousand, United one nine three nine."
},
{
"speaker": "KSFO_APP",
"text": "Delta ni... | grok-4.20-0309-non-reasoning | 2026-08-08T19:31:47.617691Z | p2 | t1 |
End of preview. Expand in Data Studio
radiotalk-us-transcripts-grok-4.20-50k
49,984 synthetic US air-traffic-control transcripts, generated with
xAI's grok-4.20-0309-non-reasoning against the v2 radiotalk scenario
pipeline. Built for fine-tuning ATC ASR models (NVIDIA Parakeet,
Whisper, etc.) and for seeding TTS audio generation.
Third release in the radiotalk transcripts series, and the first from a non-Qwen generator:
- v1:
twangodev/radiotalk-us-transcripts-qwen3-100k - v2:
twangodev/radiotalk-us-transcripts-qwen3-25k - v3: this dataset
What's different vs v2
Same scenario machinery, different generator. The v2 release's
FAA-aligned class distributions, OpenSky-ADS-B-weighted operator
sampling, 86-hub airport restriction, real runway lists, ARTCC
injection, service-airframe compatibility rules, prompt p2, and the
post-generation realism validator all carry over unchanged — see the
v2 card
for the full write-up. What changed:
- Generator:
grok-4.20-0309-non-reasoningvia the xAI API (OpenAI-compatible chat completions), no reasoning/thinking mode, temperature 0.9, in place of localQwen/Qwen3-32B-NVFP4with thinking enabled. - Scale: 49,984 transcripts vs 22,065 — a fresh seed-42 scenario stream, so scenarios do not overlap v2's.
- Validator pass behavior: the same reject-and-retry validator that drove an 11.7% reject rate on Qwen3-32B rejected well under 1% of Grok 4.20 first attempts; only 68 of ~51,500 attempted scenarios (0.13%) exhausted retries and were dropped.
Distribution snapshot
operator_class: commercial 41.9 / ga 30.1 / business 10.1 / cargo 5.8 /
training 4.9 / military 4.0 / rotorcraft 2.0 / medevac 1.1
phase: tower 29.9 / approach 25.1 / ground 19.9 / center 15.0 / ramp 10.0
event: routine 83.5 / abnormal 12.5 / emergency 4.0
weather: VMC 81.7 / IMC 18.3
time of day: day 65.4 / night 24.7 / dawn 5.0 / dusk 4.9
density: moderate 49.6 / heavy 30.5 / light 19.9
airports: 86 unique US tier-1+2 hubs, well-balanced (~2.4% each at top)
size: 527,820 turns, ~45.7M utterance characters
Schema
Identical to v2 (including the artcc field) — see the
v2 card
for the full column and struct reference. The model column reads
grok-4.20-0309-non-reasoning on every row.
Generation
- Model:
grok-4.20-0309-non-reasoning(xAI API), no reasoning mode - Concurrency: 32 in-flight requests, ~12 transcripts/sec sustained
- Wall time: ~72 minutes across two legs (seed 42, resumable manifest)
- Prompt
p2, taxonomyt1, validator as shipped in v2
Companion datasets
twangodev/radiotalk-voices-2k— 2,000 reference voices for TTS cloningtwangodev/radiotalk-us-audio-higgs-clean/-noisy— v2 audio via Higgs Audio v2twangodev/radiotalk-us-audio-tada-clean/-noisy— v1 audio via Hume TADA
Quality evals
- LLM-judge realism scores (
judge_scores.jsonl): every transcript scored 1-10 bygrok-4.20-0309-non-reasoningagainst an FAA-phraseology rubric at temperature 0. Mean 6.7; distribution 3: 6 / 4: 542 / 6: 24,691 / 7: 13,152 / 8: 11,506; 1.1% score below 5. The judge is deliberately strict and flags some intentional design choices (e.g. ICAO "decimal" vs FAA "point"), so treat scores as a relative quality signal and outlier filter. - Closed-loop STT check: Grok STT on clean TTS renderings of these
transcripts reaches 5.8% mean WER / 75% exact-match — see
radiotalk-us-audio-grok-clean.
License
CC-BY-4.0. Attribute the radiotalk project + xAI for the underlying LLM. Operator-frequency weights derived from the OpenSky ADS-B archive under their academic-use terms.
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