# NTSB investigations: Pratt & Whitney Canada PT6A-60A NTSB aviation accident and incident investigations since 1962: the probable cause, findings, aircraft, crew, weather and docket of each, linked to the FAA registry and the FAA’s own reports. Page 4 of 6 · 259 cases ## Cases, newest first - [NTSB SEA99LA003](https://openairdocs.org/ntsb/SEA99LA003.md): Beech 99 · Missoula, MT · Accident · Minor injuries · Limited investigation · Final report · Oct 17, 1998 · N299GL · Substantial damage > The pilot-in-command's delayed remedial action in response to the co-pilot's improper landing flare, and the co-pilot's application of excessive (full nose-up) trim during the landing flare as taught in the operator's initial aircrew training program. Factors… - [NTSB ANC98LA148](https://openairdocs.org/ntsb/ANC98LA148.md): Beech 1900C · St. Mary'S, AK · Accident · No injuries · Limited investigation · Final report · Sep 12, 1998 · N1563C · Substantial damage > The pilot's failure to follow the aircraft checklist, and an inadvertent wheels up landing. A factor was the pilot's distraction due to a malfunction of the flap system - [NTSB ATL98RA099](https://openairdocs.org/ntsb/ATL98RA099.md): Ayres S2R-T34 · San Jose Del, Colombia · Accident · 2 fatal · Foreign investigation · Jul 27, 1998 · N3090M · Destroyed - [NTSB MIA98LA175](https://openairdocs.org/ntsb/MIA98LA175.md): Air Tractor AT-502 · Clewiston, FL · Accident · No injuries · Limited investigation · Final report · Jun 2, 1998 · N7318K · Substantial damage > The pilot's inadequate visual lookout while taxiing for takeoff. - [NTSB LAX98LA129](https://openairdocs.org/ntsb/LAX98LA129.md): Ayres S2RT-34RE · Buckeye, AZ · Accident · No injuries · Limited investigation · Final report · Mar 25, 1998 · N4010X · Substantial damage > The incorrect turbine blades installed on the engine, the fractured compressor turbine blades and separation of the blade, and the improper maintenance installation of the incorrect CT blades by the repair station. A factor in the accident was the inadequate… - [NTSB ANC98LA010](https://openairdocs.org/ntsb/ANC98LA010.md): Piper PA-31-T3 · Tyonek, AK · Accident · No injuries · Limited investigation · Final report · Nov 11, 1997 · N314SC · Substantial damage > An on-ground collision with an animal (moose). Factors in the accident were night VFR conditions that restricted the pilot's visual lookout, and the lack of an airport perimeter fence. - [NTSB LAX97LA247](https://openairdocs.org/ntsb/LAX97LA247.md): Sikorsky S-58T · Page, AZ · Accident · No injuries · Limited investigation · Final report · Jul 18, 1997 · N47B · Substantial damage > an engine failure resulting from the fracture of two power turbine blades, which had been previously subjected to a hot or hung start. - [NTSB FTW97LA253](https://openairdocs.org/ntsb/FTW97LA253.md): Piper PA-31T · Austin, TX · Accident · No injuries · Limited investigation · Final report · Jul 4, 1997 · N974DC · Substantial damage > the pilot's failure to extend the landing gear. A factor relating to the accident was: the pilot's failure to follow the landing checklist. - [NTSB LAX97LA182](https://openairdocs.org/ntsb/LAX97LA182.md): Ayres S2R-T-34 · Tonopah, AZ · Accident · No injuries · Limited investigation · Final report · May 8, 1997 · N4011G · Substantial damage > the failure of the power turbine due to an overtemperature condition created by an improperly adjusted fuel control. A factor in the accident was the tripped circuit breaker which prevented the wing lights from operating during the forced night landing. - [NTSB CHI97LA057](https://openairdocs.org/ntsb/CHI97LA057.md): Beech 300 · Bloomington, IN · Accident · No injuries · Limited investigation · Final report · Jan 21, 1997 · N404EW · Substantial damage > the pilot's excessive distance/speed during the landing which led to his failure to attain a proper touchdown point on the runway. The factors involved were: the pilot's inadequate in-flight planning/decision, his failure proceed to the destination airport,… - [NTSB NYC97FA030](https://openairdocs.org/ntsb/NYC97FA030.md): Cessna 425 · Bohemia, NY · Accident · 3 fatal · Field investigation · Final report · Dec 16, 1996 · N425EW · Destroyed > the pilot's early descent to decision height and his failure to perform the missed approach procedure. A factor was the failure of air traffic control to issue a safety advisory. - [NTSB FTW97LA012](https://openairdocs.org/ntsb/FTW97LA012.md): Air Tractor AT-502 · Idalou, TX · Accident · No injuries · Limited investigation · Final report · Oct 8, 1996 · N4533H · Substantial damage > the pilot's improper planning/decision, which resulted in an overrun during takeoff and an encounter with cotton (crop) and rough/uneven terrain. Factors relating to the accident were: the excessive loading of the airplane for the existing conditions, the… - [NTSB FTW96LA349](https://openairdocs.org/ntsb/FTW96LA349.md): Ayres S2R-T34 · W. Helena, AR · Accident · 1 fatal · Limited investigation · Final report · Aug 17, 1996 · N3095X · Destroyed > The inadequate visual lookout of the vehicle driver and his inadvertent driving of the vehicle onto the runway resulting in the pilot of the departing aircraft performing an evasive maneuver in an attempt to avoid the collision. - [NTSB IAD96LA133](https://openairdocs.org/ntsb/IAD96LA133.md): Piper PA-31T · Pottstown, PA · Accident · No injuries · Limited investigation · Final report · Aug 14, 1996 · N163SA · Substantial damage > The pilot's failure to maintain directional control during takeoff/ground run resulting in in-flight collision with a fence. Related factors were the pilot's poor planning/decision making, and the fog. - [NTSB MIA96IA179](https://openairdocs.org/ntsb/MIA96IA179.md): Short Brothers SD3-60-200 · San Juan, PR · Incident · No injuries · Incident investigation · Final report · Jul 9, 1996 · N384MQ · No damage > Fatigue failure of a segment of the elevator trim control cable. Contributing to the accident was the failure of the airplane manufacturer to require a replacement interval of the cables. - [NTSB MIA96WA110](https://openairdocs.org/ntsb/MIA96WA110.md): de Havilland DH6 · Virgin Gorda, British Virgin Islands · Accident · Minor injuries · Foreign investigation · Apr 7, 1996 · N143SA · Substantial damage - [NTSB FTW95LA352](https://openairdocs.org/ntsb/FTW95LA352.md): Cessna 172E · Alpine, TX · Accident · No injuries · Limited investigation · Final report · Aug 20, 1995 · N5638T · 2 aircraft · Substantial damage > The failure of the pilots of both airplanes to see and avoid each other. A factor was the Cessna's inoperative radio. - [NTSB FTW95LA347](https://openairdocs.org/ntsb/FTW95LA347.md): Ayres S2R-T34 · Lake City, AR · Accident · No injuries · Limited investigation · Final report · Aug 11, 1995 · N3095W · Substantial damage > The pilot's failure to maintain clearance with the transmission wires. - [NTSB SEA95LA158](https://openairdocs.org/ntsb/SEA95LA158.md): Air Tractor AT-502 · Idaho Falls, ID · Accident · No injuries · Limited investigation · Final report · Jul 24, 1995 · N4516K · Substantial damage > The pilot's inadequate airspeed at liftoff. Contributing to the accident were high density altitude, tailwind conditions, the pilot's selection of an excessive takeoff flap setting, and a windshear encounter. - [NTSB CHI95FA182](https://openairdocs.org/ntsb/CHI95FA182.md): Grumman G-21E · West Chicago, IL · Accident · 2 fatal · Field investigation · Final report · Jun 14, 1995 · N121H · Destroyed > The pilot allowed excessive nose-up rotation of the airplane during lift-off, and failed to obtain and/or maintain adequate airspeed, which resulted in an inadvertent stall and collision with the terrain. Factors relating to the accident were: the pilot's… - [NTSB FTW95LA207](https://openairdocs.org/ntsb/FTW95LA207.md): Air Tractor AT-502 · Mcgehee, AR · Accident · 1 fatal · Limited investigation · Final report · May 19, 1995 · N4536Q · Minor damage > The ground service person's lack of attention and failure to remain clear of the turning propeller. - [NTSB SEA95LA051](https://openairdocs.org/ntsb/SEA95LA051.md): Sikorsky S-58JT · Marblemount, WA · Accident · Serious injuries · Limited investigation · Final report · Feb 13, 1995 · N1099T · Substantial damage > Fatigue failure of the main rotor driveshaft. - [NTSB FTW95LA014](https://openairdocs.org/ntsb/FTW95LA014.md): Air Tractor AT-502 · Lamesa, TX · Accident · No injuries · Limited investigation · Final report · Oct 10, 1994 · N133HF · Substantial damage > The loss of directional control on the ground and the pilot's inadvertent ground loop. A factor was the failure by the pilot of the conflicting traffic on the runway to maintain proper traffic separation. - [NTSB SEA94T#A04](https://openairdocs.org/ntsb/SEA94T%23A04.md): de Havilland DHC-6-300 · Mccall, ID · Accident · No injuries · Class 3 · Final report · Aug 22, 1994 · N141Z · Substantial damage - [NTSB SEA94LA218](https://openairdocs.org/ntsb/SEA94LA218.md): Beech 99 · Helena, MT · Accident · No injuries · Limited investigation · Final report · Aug 20, 1994 · N14MV · Substantial damage > Landing gear locking mechanism overload and improper rigging. - [NTSB DEN93LA093](https://openairdocs.org/ntsb/DEN93LA093.md): Air Tractor AT-502 · Brookland, AR · Accident · No injuries · Limited investigation · Final report · Jul 30, 1993 · N7319V · Substantial damage > The pilot's failure to maintain adequate object clearance. - [NTSB LAX93LA306](https://openairdocs.org/ntsb/LAX93LA306.md): Ayres S-2R-T34 · Tulare, CA · Accident · No injuries · Limited investigation · Final report · Jul 29, 1993 · N4016B · Substantial damage > the failure of the main gear inner lower tube assembly due to fatigue. - [NTSB NYC93IA113](https://openairdocs.org/ntsb/NYC93IA113.md): Short Brothers SD3-60-200 · Atlantic City, NJ · Incident · No injuries · Incident investigation · Final report · Jun 14, 1993 · N711HJ · No damage > A malfunction of the cargo fire warning system which resulted in a false alarm. - [NTSB CHI93MA143](https://openairdocs.org/ntsb/CHI93MA143.md): Beech C99 · Shelton, NE · Accident · 2 fatal · Major investigation · Final report · Apr 29, 1993 · N115GP · Destroyed > The deliberate disregard for the federal aviation regulations, gp express procedures, and prudent concern for safety by the two pilots in their decision to execute an aerobatic maneuver during a scheduled check ride flight, and the failure of gp express… - [NTSB SEA93LA067](https://openairdocs.org/ntsb/SEA93LA067.md): Beech C-99 · Seattle, WA · Accident · No injuries · Limited investigation · Final report · Feb 25, 1993 · N63978 · Substantial damage > The improper starting procedure by the pilot of the Aeronca. A factor contributing to the accident was inadequate communications by the pilot of the Aeronca. - [NTSB FTW93LA077](https://openairdocs.org/ntsb/FTW93LA077.md): Beech 65-A90 · Marfa, TX · Accident · No injuries · Limited investigation · Final report · Jan 30, 1993 · N363N · Substantial damage > The pilot's continued descent below the proper altitude. Factors were the dark night, fog, and the crew's poor coordination. - [NTSB LAX93WA028](https://openairdocs.org/ntsb/LAX93WA028.md): de Havilland DHC-6-200 · Kenya · Accident · 1 fatal · Foreign investigation · Nov 1, 1992 · N201RH · No damage - [NTSB LAX92LA300](https://openairdocs.org/ntsb/LAX92LA300.md): Ayres S2R-T34 · Five Points, CA · Accident · No injuries · Limited investigation · Final report · Jul 16, 1992 · N3105V · Substantial damage > The failure of airport personnel to perform the necessary runway maintenance. Contributing to this accident was the dark night and high vegetation. - [NTSB ANC92LA077](https://openairdocs.org/ntsb/ANC92LA077.md): De Havilland DHC-2-T · Alexander Creek, AK · Accident · No injuries · Limited investigation · Final report · May 24, 1992 · N4478 · Substantial damage > The pilot's inadvertent deactivation of the engine's fuel supply by switching off the fuel shut off. Factor related to the accident was the soft mud in the forced landing area. - [NTSB ANC92IA030](https://openairdocs.org/ntsb/ANC92IA030.md): Piper PA-31-T3 · Anchorage, AK · Incident · No injuries · Incident investigation · Final report · Jan 28, 1992 · N314SC · Minor damage > The pilot's continued taxi after becoming lost or disoriented. Factors relating to the accident were the whiteout conditions caused by the freshly falling and blowing snow and the inadequate snow removal by airport personnel. - [NTSB NYC92FA053](https://openairdocs.org/ntsb/NYC92FA053.md): Beech 1900C · Block Island, RI · Accident · 3 fatal · Class 1 · Field · Final report · Dec 29, 1991 · N811BE · Destroyed > The instructor pilot's loss of altitude awareness and possible spatial disorientation, which resulted in the loss of control of the airplane at an altitude too low for recovery; and company management's lack of involvement in and oversight of its Beechcraft… - [NTSB ANC92FA006](https://openairdocs.org/ntsb/ANC92FA006.md): Beech BE-99 · Allakaket, AK · Accident · No injuries · Field investigation · Final report · Oct 19, 1991 · N299GL · Substantial damage > Was the pilot-in-command misjudged the proper touchdown point on the runway. Contributing to the accident was the snow-covered terrain and a snowbank. - [NTSB DEN91LA131](https://openairdocs.org/ntsb/DEN91LA131.md): Piper PA-31T-620 · Santa Fe, NM · Accident · No injuries · Limited investigation · Final report · Sep 22, 1991 · N2FJ · Substantial damage > Inadvertent deactivation of aircraft brakes by unqualified person. - [NTSB MIA91LA196](https://openairdocs.org/ntsb/MIA91LA196.md): Air Tractor AT-502 · Cleveland, MS · Accident · No injuries · Limited investigation · Final report · Aug 10, 1991 · N45192 · Substantial damage > The pilot's decision to continue the flight with reduced visual lookout due to a dirty foggy windshield. - [NTSB DCA91MA042](https://openairdocs.org/ntsb/DCA91MA042.md): Beech C99 · Birmingham, AL · Accident · 13 fatal · Major investigation · Final report · Jul 10, 1991 · N7217L · Destroyed > The decision of the captain to initiate and continue an instrument approach into clearly identified thunderstorm activity, resulting in a loss of control of the airplane from which the flightcrew was unable to recover and subsequent collision with obstacles… - [NTSB FTW91DPG05](https://openairdocs.org/ntsb/FTW91DPG05.md): Ayres S2R-T34 · Wheatley, AR · Accident · 1 fatal · Final report · May 2, 1991 · N4015Z · Minor damage > The failure of the flagman to follow established procedures. - [NTSB NYC91LA068](https://openairdocs.org/ntsb/NYC91LA068.md): Beech 200 · Johnstown, PA · Accident · No injuries · Limited investigation · Final report · Jan 30, 1991 · N30SE · Substantial damage > The pilot's failure to maintain proper directional control of the airplane during landing, resulting in a collision with a snow bank and runway marker. A factor relating to the accident was the low visibility during landing. - [NTSB CHI91LA067](https://openairdocs.org/ntsb/CHI91LA067.md): Beech 200 · Vichy, MO · Accident · No injuries · Limited investigation · Final report · Jan 12, 1991 · N200MR · Substantial damage > A restricted visual outlook and go-around was not performed by the pilot. Factors related to the accident were a dark night, fog and glare, ice covered runway and whiteout conditions. - [NTSB ATL90LA182](https://openairdocs.org/ntsb/ATL90LA182.md): Helio HST-550A · Mobile, AL · Accident · Serious injuries · Limited investigation · Final report · Sep 29, 1990 · N5779N · Destroyed > The pilot's intentional attempted takeoff with a known tailwind component. Factors relating to the accident were the tailwind, trees and utility lines on the departure end of the takeoff area. - [NTSB MIA90IA039](https://openairdocs.org/ntsb/MIA90IA039.md): Boeing 727 · Ormond Beach, FL · Incident · No injuries · Incident investigation · Final report · Dec 15, 1989 · N64339 · 2 aircraft · No damage > Failure of the pilot in command in the Beech 300 to comply with an ATC clearance in a timely manner, while diverting his attention, and failure of the ATC controller to assure that IFR separation was maintained. - [NTSB DEN90FA030](https://openairdocs.org/ntsb/DEN90FA030.md): Beech F-90 · Lincoln, NM · Accident · 2 fatal · Field investigation · Final report · Dec 2, 1989 · N9PU · Destroyed > Loss of control due to pilot disorientation while conducting a non precision instrument approach. Contributing to the accident was the pilot's lack of instrument and multiengine experience, and the existing adverse weather. - [NTSB ANC90LA001](https://openairdocs.org/ntsb/ANC90LA001.md): Cessna 208 · King Salmon, AK · Accident · No injuries · Limited investigation · Final report · Oct 2, 1989 · N9382F · Substantial damage > Improper planning/decision by the pilot. Contributing factors were: the surrounding terrain, unfavorable wind, downdraft, the pilot's lack of familiarity with the geographical area, and his self induced pressure. - [NTSB ATL89FA142](https://openairdocs.org/ntsb/ATL89FA142.md): Embraer EMB-110-P1 · Mt. Pleasant, TN · Accident · 1 fatal · Field investigation · Final report · May 6, 1989 · N95PB · Destroyed > Pilot attempted to make a VFR landing in instrument conditions that were below minimums for the published instrument approach and collided with trees and the ground after allowing the airplane to descend below the proper altitude. - [NTSB CHI89FA078](https://openairdocs.org/ntsb/CHI89FA078.md): Cessna 208A · Mt. Zion, IL · Accident · Minor injuries · Field investigation · Final report · Apr 27, 1989 · N9637F · Substantial damage > The pilot's intentional flight into known adverse weather. Contributing factors were the pilot's poor evaluation of the weather information given him by the air traffic controllers. - [NTSB FTW89DRA04](https://openairdocs.org/ntsb/FTW89DRA04.md): Air Tractor AT-502 · Ganado, TX · Accident · No injuries · Final report · Apr 19, 1989 · N7320C · Substantial damage > Loss of directional control for an unknown reason. Next page: https://openairdocs.org/ntsb.md?engine=52043&page=5 ## The whole list in SQL Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS: ```sql SELECT c."ntsbNumber", c."eventDate", c."eventType", c."eventCity", c."eventStateOrRegion", a.n_number, a."aircraftMake", a."aircraftModel", c."highestInjuryLevel", c."totalFatal", c."completionStatus", c.report_url FROM 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' c LEFT JOIN 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' a ON a.case_mkey = c."mKey" AND a.position = 1 WHERE c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('52043', '51999')) ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC ``` This list as a web page: https://openairdocs.org/ntsb?engine=52043&page=4 --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.