Datasets:

jifei0126
/

CausalAir

messages listlengths 2 2	rejected_response stringlengths 1.29k 6.64k ⌀
[ { "role": "user", "content": "HISTORY OF FLIGHTOn December 9, 2019, about 1450 Eastern standard time (EST), a Boeing of Canada Ltd., deHavilland Division, DHC-8-301, C-GNON, sustained minor damage when it was involved in an incident near Keene, New Hampshire. The two pilots, one flight attendant, and 15 pas...	<think> 1. The accident occurred during the descent phase of flight, at approximately 21,500 feet msl, when the first officer reported smelling smoke and observing smoke and fire originating from the upper forward corner of the right windshield. 2. The presence of smoke and fire localized to the upper forward corner o...
[ { "role": "user", "content": "The pilot in the tailwheel-equipped airplane reported that during takeoff from a private dirt airstrip which had a 3% uphill slope and was crowned in the center of the track, he struggled to correct for torque and P-factor and crosswind, and the airplane veered left. He was abl...	<think> 1. The accident occurred during the takeoff phase of flight from a private dirt airstrip, which is a critical phase requiring precise directional control, especially in tailwheel-equipped airplanes that are more susceptible to ground handling challenges. 2. The pilot reported struggling to correct for torque, ...
[ { "role": "user", "content": "On August 21, 2010, about 1145 Pacific daylight time, an experimental amateur-built Hummel/Finberg Ultra Cruiser airplane, N524DF, sustained substantial damage following a loss of engine power and subsequent forced landing near Canby, Oregon. The sport pilot, the sole occupant ...	<think> 1. The accident occurred during the initial climb phase of flight, approximately 10 minutes after takeoff from Mulino State Airport, as the pilot was en route to Lenhardt Airpark. 2. During this phase, the pilot reported that the engine began to run rough and lose power, indicating a degradation in engine per...
[ { "role": "user", "content": "HISTORY OF FLIGHT On June 12, 2015, about 0700 central daylight time, a Beech A-36 airplane, N3193W, was destroyed by impact forces and a post impact fire following a loss of control during initial climb after takeoff from a private airstrip near Huggins, Missouri. The pilot an...	<think> 1. The accident occurred during the initial climb phase of flight, shortly after takeoff from a private airstrip, as confirmed by witness statements and GPS data showing the airplane lifted off about 900 feet from the north end of the 2,000-foot runway. 2. The GPS data indicate that the airplane reached a maxi...
[ { "role": "user", "content": "On August 31, 2011, about 1630 eastern daylight time, a Cessna 172N, N739RU was substantially damaged during landing at Plymouth Municipal Airport (PYM), Plymouth, Massachusetts. The private pilot was not injured. The airplane was registered to a private owner, and operated by...	<think> 1. The accident occurred during the landing phase of flight, specifically during the flare, when the pilot attempted to reduce engine power and pull back on the control column to lower the nose for touchdown. 2. The pilot reported that during the takeoff roll, forward pressure was required on the control colum...
[ { "role": "user", "content": "On July 20, 2008, at 0745 Pacific daylight time, a Special - Light Sport Aircraft (S-LSA) Aero SP Z O O AT-4, N706GB, landed hard and porpoised down runway 23, collapsing the nose landing gear, at Hemet-Ryan Airport, Hemet, California. Hemet Flight Center, LLC, operated the air...	<think> 1. The accident occurred during the landing phase of flight, specifically during the flare and touchdown sequence on runway 23 at Hemet-Ryan Airport. 2. The pilot had completed two prior uneventful landings, indicating that the aircraft was functioning normally and that environmental conditions were initially...
[ { "role": "user", "content": "HISTORY OF FLIGHT On March 14, 2009, at about 1002 eastern daylight time, a McNear, Explorer Coupe 2000, amateur-built gyrocopter, N5098L, rolled over on the taxiway adjacent to runway 14, under unknown circumstances, at the Okeechobee County Airport (OBE), Okeechobee, Florida...	<think> 1. The accident occurred during the taxi phase of flight, as the gyrocopter was moving from the ramp area toward the runway threshold for departure. 2. The pilot reported to a friend that he was experiencing difficulty achieving pre-rotator rpm above 60, indicating a known pre-existing mechanical issue with t...
[ { "role": "user", "content": "According to the pilot, while on a cross country flight, he descended and overflew a lake along his route of flight. Flying into the setting sun at low level over the lake, the right main landing gear struck a marked power line, about 70 feet above the lake's surface, which sep...	<think> 1. The accident occurred during the en route phase of flight, as the pilot was conducting a cross-country flight and had descended to overfly a lake along his route. 2. The aircraft was operating at a low altitude, approximately 70 feet above the lake’s surface, which limited the available margin for error in...
[ { "role": "user", "content": "The flight instructor was providing primary flight instruction to a student pilot in a tailwheel-equipped airplane. The instructor reported that as the student pilot was departing from a 5,000 foot-long, dry paved runway, the airplane drifted to the right just after becoming ai...	<think> 1. The accident occurred during the takeoff phase of flight, specifically just after the airplane became airborne from a 5,000-foot-long, dry paved runway. 2. The airplane began drifting to the right immediately after becoming airborne, indicating a loss of directional control during a critical phase of fligh...
[ { "role": "user", "content": "On October 5, 2008, about 1230 eastern daylight time, a Cirrus SR22, N101CD, experienced an asymmetric flap extension while approaching Lakeland Linder Regional Airport (LAL), Lakeland, Florida. The certificated private pilot was not injured. Visual meteorological conditions pr...	<think> 1. The accident occurred during the approach phase of flight, specifically after the pilot had entered the traffic pattern and initiated flap extension for landing at Lakeland Linder Regional Airport. 2. The pilot reported slowing the airplane to the flap extension speed and setting the flap selector to the 50...
[ { "role": "user", "content": "After completing several practice landings and autorotations at the airport, the Certified Flight Instructor (CFI) and student pilot departed for the practice area. The CFI demonstrated straight in and 180-degree autorotations; the first 180-degree attempt began at 6,000 feet m...	<think> 1. The accident occurred during a practice flight involving autorotations, which are maneuvering procedures conducted without engine power, typically used for training or emergency scenarios. 2. The first 180-degree autorotation was initiated at 6,000 feet mean sea level with an airspeed of 55–60 knots, indic...
[ { "role": "user", "content": "After a morning balloon flight of more than one hour the private pilot was making her third attempt at landing. On the previous attempts a slight wind shift to the left was taking the balloon away from the target area and into unacceptable obstructions. The pilot said she was ...	<think> 1. The accident occurred during the landing phase of flight, specifically during the final approach and touchdown sequence. 2. The pilot had previously attempted two landings, both of which resulted in the balloon drifting left due to wind shifts, indicating an unstable or uncontrollable landing environment. ...
[ { "role": "user", "content": "On August 10, 2014, about 1020 Pacific daylight time, a Ryan Navion, N4533K, experienced a partial loss of engine power during approach to land at Sierra Skypark Airport (E79) in Fresno, California. The pilot and two passengers were uninjured and the airplane sustained substant...	<think> 1. The accident occurred during the approach phase of flight, specifically on short final to land at Sierra Skypark Airport, which is a critical phase requiring precise power and airspeed management. 2. The pilot reported that the airplane was operating normally during the second flight of the day, with no pri...
[ { "role": "user", "content": "HISTORY OF FLIGHT On February 8, 2010, at 1705 eastern standard time, a Beech 65, N130SP, registered to a private owner, experienced a loss of engine power on both engines and collided with trees in a residential area in the vicinity of Lawrenceville, Georgia. The personal fli...	<think> 1. The accident occurred during the initial climb phase of flight, shortly after takeoff from runway 25 at Gwinnett County Airport Briscoe Field, as the airplane became airborne and the pilot retracted the landing gear. 2. During this phase, the right engine lost full power immediately after rotation, followed...
[ { "role": "user", "content": "The private pilot had a hard landing during a personal flight in a float-equipped airplane under Title 14, Code of Federal Regulations Part 91. In a written report to the NTSB, the pilot stated, in part: “With the glassy water and the smoke haze I lost my depth perception and ...	<think> 1. The accident occurred during the landing phase of flight, specifically involving a float-equipped airplane operating on water. 2. The pilot reported encountering glassy water conditions, which are known to reduce visual cues for depth perception and height above the surface. 3. Concurrently, smoke haze w...
[ { "role": "user", "content": "HISTORY OF FLIGHTOn June 11, 2012, about 0720 mountain daylight time, an Ayres Corporation S2R-G6, N70WY, landed short of runway 28 at Riverton Regional Airport, Riverton, Wyoming. Sky Aviation was operating the airplane under the provisions of 14 Code of Federal Regulations (C...	<think> 1. The accident occurred during the approach phase of flight, following a local aerial application operation that began at Hidden Valley Airport, a private dirt strip near Riverton, Wyoming. 2. Shortly after departure from Hidden Valley Airport, the pilot observed abnormally high readings on the torque and tem...
[ { "role": "user", "content": "The pilot reported that during a landing at a remote dirt airstrip, while on short final, the airplane encountered a downdraft which resulted in a touchdown short of the runway. After impact the airplane nosed over. The airplane sustained substantial damage to the fuselage f...	<think> 1. The accident occurred during the landing phase of flight, specifically on short final approach to a remote dirt airstrip. 2. The pilot reported encountering a downdraft during short final, which is an atmospheric condition that can rapidly reduce aircraft altitude and airspeed. 3. The presence of a downd...
[ { "role": "user", "content": "HISTORY OF FLIGHTOn December 23, 2012, at 1330 eastern standard time, a Piper PA-28R-200, N2074T, was destroyed when it collided with trees and terrain following a total loss of engine power in cruise flight near Lock Haven, Pennsylvania. The private pilot was seriously injured...	<think> 1. The accident occurred during the cruise phase of flight at 7,500 feet when the pilot reported the engine began to "surge" and then ceased producing power, indicating a sudden and complete loss of engine function. 2. The pilot attempted to restart the engine without success, which suggests that the power los...

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The dataset is designed for fine-tuning a large language model for aviation accident analysis, including the reasoning process for identifying the causes of accidents. It consists of three fields: the narrative of the aviation accident, the reasoning process, and the accident cause. The dataset is divided into the SFT stage and the DPO stage.

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