README.md

metadata

language:
  - en
license: other
task_categories:
  - automatic-speech-recognition
tags:
  - air-traffic-control
  - aviation
  - atc
  - pilot
  - controller
configs:
  - config_name: S2R
    data_splits:
      - name: train
        num_bytes: null
        num_examples: 1443
size_categories:
  - 1K<n<10K

ATC Pilot–Controller Conversations

Dataset Description

This dataset contains English conversations between pilots and air traffic controllers (ATC), transcribed from real VHF radio transmissions recorded at controlled aerodromes.

Each example consists of:

• A WAV audio file (mono, VHF radio quality)
• A transcription of the utterance
• Speaker metadata: whether the speaker is the pilot or the controller
• Utterance type: e.g. readback, taxi, pushback, etc.
• Token-level annotations: callsigns, taxiways, frequencies, actions, and greetings tagged inline
• Duration of the audio clip in seconds

Configuration & Splits

Config	Split	Description
S2R	train	All labelled pilot–controller utterances

Data Fields

Field	Type	Description
audio	Audio	WAV audio file
transcription	string	Verbatim transcript
speaker	string	pilot or controller
utterance_type	string	High-level speech act label (e.g. readback, taxi)
metadata_raw	string	Raw token-level annotation lines from the .txt file
duration	float	Audio clip duration in seconds
conversation_id	string	Parent conversation folder name
file_id	string	Stem of the source WAV filename

Important Notes

⚠️ Audio quality — The audio is transmitted through Very High Frequency (VHF) radio.
Most recordings sound muffled or have noticeable background noise typical of cockpit and radio environments.
Models trained on clean speech may struggle without domain adaptation.

✈️ ATM-specific vocabulary — The transcriptions contain terminology specific to Air Traffic Management (ATM):

• Aircraft callsigns (e.g. [UNK] seven zero five) which may be partially inaudible
• Radiotelephony numerals: numbers are spoken in aviation phonetics
  (e.g. nine → niner, five → fifer, thousand → tousand)
• Taxiway designators, frequency strings, and procedural phrases
  (e.g. holding point, contact tower, good day)

Citation

If you use this dataset, please acknowledge the original source of the recordings.