# NTSB investigations: Pratt & Whitney PT6A series 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 13 of 13 · 650 cases ## Cases, newest first - [NTSB MIA95LA173](https://openairdocs.org/ntsb/MIA95LA173.md): Air Tractor AT-502 · Belzoni, MS · Accident · No injuries · Limited investigation · Final report · Jul 3, 1995 · N91955 · Substantial damage > Inadequate compensation for wind conditions by the pilot. The gusty crosswind was a factor. - [NTSB FTW95LA211](https://openairdocs.org/ntsb/FTW95LA211.md): Air Tractor AT-502 · Lissie, TX · Accident · No injuries · Limited investigation · Final report · May 20, 1995 · N4554R · Substantial damage > The partial loss of engine power for undetermined reasons. A factor was the lack of suitable terrain for a forced landing. - [NTSB LAX95LA137](https://openairdocs.org/ntsb/LAX95LA137.md): de Havilland DHC-6-200 · Honolulu, HI · Accident · No injuries · Limited investigation · Final report · Mar 16, 1995 · N37ST · Destroyed > Intentional ditching due to the flightcrew's failure to properly manage the fuel system, and operation of the airplane in an excessively overweight condition. - [NTSB FTW95FA129](https://openairdocs.org/ntsb/FTW95FA129.md): Cessna 208B · Ardmore, OK · Accident · Minor injuries · Field investigation · Final report · Mar 2, 1995 · N9448B · Substantial damage > The pilot's continued flight into adverse weather conditions. Factors were the icing conditions prevailing at the destination airport, and the pilot's inability to maintain visual lookout due to windshield icing. - [NTSB NYC95WA235](https://openairdocs.org/ntsb/NYC95WA235.md): Douglas DC-3C · Lobito, Central African Republic · Accident · 2 fatal · Foreign investigation · Dec 15, 1994 · N96BF · Destroyed - [NTSB MIA95LA040](https://openairdocs.org/ntsb/MIA95LA040.md): Cessna 208B · Memphis, TN · Accident · No injuries · Limited investigation · Final report · Dec 15, 1994 · N927FE · 2 aircraft · Substantial damage > The inability of the pilot of Cessna 208, N927FE to see Douglas DC3, N24320, as he taxied to takeoff due to inoperative tail navigation lights and beacon lights on the DC3 and due to glare on the wet taxiway. - [NTSB FTW94LA257](https://openairdocs.org/ntsb/FTW94LA257.md): Air Tractor AT-502 · Bosco, LA · Accident · Serious injuries · Limited investigation · Final report · Aug 1, 1994 · N9152C · Destroyed > The pilot's failure to maintain clearance with the telephone pole. - [NTSB FTW94LA239](https://openairdocs.org/ntsb/FTW94LA239.md): Air Tractor AT-501 · Marianna, AR · Accident · No injuries · Limited investigation · Final report · Jul 19, 1994 · N6073J · Destroyed > A premature liftoff. Factors were the tall, wet grass and a tail wind component. - [NTSB CHI94LA147](https://openairdocs.org/ntsb/CHI94LA147.md): Air Tractor AT-402 · Sikeston, MO · Accident · No injuries · Limited investigation · Final report · May 5, 1994 · N91966 · Substantial damage > a fatigue failure of a compressor blade which resulted in a catostrophic engine failure. - [NTSB FTW94IA139](https://openairdocs.org/ntsb/FTW94IA139.md): Beech 1900C · Cheyenne, WY · Incident · No injuries · Incident investigation · Final report · Apr 27, 1994 · N141UE · Minor damage > A partial failure of the leading edge tip portion of one of the left engine propeller blades due to previous impact damage from an unknown source. - [NTSB FTW94LA119](https://openairdocs.org/ntsb/FTW94LA119.md): Cessna 208 · Whitewright, TX · Accident · Serious injuries · Limited investigation · Final report · Apr 3, 1994 · N9421F · Minor damage > The inadvertent stall when too many parachutist hung on the outside of the aircraft. - [NTSB FTW94LA098](https://openairdocs.org/ntsb/FTW94LA098.md): Air Tractor AT-502 · Moro, AR · Accident · Serious injuries · Limited investigation · Final report · Mar 16, 1994 · N9189Y · Destroyed > The pilot's failure to maintain clearance of power lines. - [NTSB DCA94WA036](https://openairdocs.org/ntsb/DCA94WA036.md): Beech 2000 (Starship) · Roskilde, Denmark · Accident · No injuries · Foreign investigation · Feb 22, 1994 · N8149S · Substantial damage - [NTSB FTW94LA003](https://openairdocs.org/ntsb/FTW94LA003.md): Cessna 208B · Dfw Airport, TX · Accident · No injuries · Limited investigation · Final report · Oct 2, 1993 · N9762B · Substantial damage > The pilot's disregard for the issued safety advisory. - [NTSB LAX93LA337](https://openairdocs.org/ntsb/LAX93LA337.md): Cessna 208B · Los Angeles, CA · Accident · No injuries · Limited investigation · Final report · Aug 28, 1993 · N781FE · Substantial damage > The inattention of the driver of a service truck to yield to aircraft and subsequent collision with the airplane as it crossed the service roadway. - [NTSB DEN93FA009](https://openairdocs.org/ntsb/DEN93FA009.md): Piper PA-42 · Grand Junction, CO · Accident · 3 fatal · Field investigation · Final report · Oct 31, 1992 · N250TJ · Destroyed > Improper IFR procedure and resultant disorientation which resulted in a collision with terrain. - [NTSB MIA92LA169](https://openairdocs.org/ntsb/MIA92LA169.md): Cessna 425 · Greenwood, MS · Accident · No injuries · Limited investigation · Final report · Aug 30, 1992 · N425TV · Substantial damage > Failure of the pilot-in-command to maintain his descent rate resulting in an undershoot. Contributing to the accident was the chip detector failure due to improper quality control by the manufacturer. - [NTSB ANC92LA123](https://openairdocs.org/ntsb/ANC92LA123.md): Beech C99 · Nuiqsut, AK · Accident · No injuries · Limited investigation · Final report · Aug 9, 1992 · N216CS · Substantial damage > The pilot's improper inflight planning/preparation, and his failure to attain the proper touchdown point. Contributing to the accident was the downdraft. - [NTSB FTW92DRD04](https://openairdocs.org/ntsb/FTW92DRD04.md): Air Tractor AT-502 · Mamou, LA · Accident · Minor injuries · Final report · Jul 8, 1992 · N7315L · Substantial damage > The pilot's failure to maintain proper clearance. - [NTSB FTW92LA131](https://openairdocs.org/ntsb/FTW92LA131.md): Air Tractor AT-401 · Taft, TX · Accident · No injuries · Limited investigation · Final report · May 13, 1992 · N1518V · 2 aircraft · Substantial damage > The pilot of the other airplane delayed compensation for turbulence. A factor was the turbulence. - [NTSB LAX92LA133](https://openairdocs.org/ntsb/LAX92LA133.md): Helio HST-550A · Salome, AZ · Accident · Minor injuries · Limited investigation · Final report · Mar 1, 1992 · N550HZ · Destroyed > The pilot's inadequate in-flight planning, improper altitude, and delaying the required remedial action to prevent the collision with the mountain. Contributing to the accident was the unfavorable wind and downdraft conditions. - [NTSB ANC91FA142](https://openairdocs.org/ntsb/ANC91FA142.md): Cessna 208 · Dillingham, AK · Accident · No injuries · Field investigation · Final report · Sep 3, 1991 · N9438F · Substantial damage > The pilot's inattentive preflight inspection which resulted in his failure to properly secure the engine oil tube filler cap resulting in the loss of engine oil and oil pressure and the pilot's failure to properly compensate for wind conditions during the… - [NTSB FTW91DRG04](https://openairdocs.org/ntsb/FTW91DRG04.md): Air Tractor AT-402 · Taft, TX · Accident · Serious injuries · Final report · Jul 21, 1991 · N4523L · Minor damage > The pilot's failure to maintain proper terrain clearance. - [NTSB CHI91DER07](https://openairdocs.org/ntsb/CHI91DER07.md): Piper PA-36-375 · Breckentidge, MN · Accident · No injuries · Final report · Jun 14, 1991 · N3866E · Substantial damage > The pilot's failure to take adequate remedial action during the attempted climb out. A related factor is the premature lift off. - [NTSB MIA91IA117](https://openairdocs.org/ntsb/MIA91IA117.md): Embraer EMB-110P1 · Ochopee, FL · Incident · No injuries · Incident investigation · Final report · Apr 5, 1991 · N102TN · Minor damage > Failure of the student to use the checklist, inadequate supervision by the pic/cfi, and inadequate supervision by the FAA principle operations inspector. - [NTSB CHI91LA103](https://openairdocs.org/ntsb/CHI91LA103.md): Short Brothers SD3-60 · Chicago, IL · Accident · No injuries · Limited investigation · Final report · Mar 2, 1991 · N385MQ · Substantial damage > An excessive landing flare by the copilot. Factors associated with the accident are the inoperative wing flaps and the captain's inadequate supervison. - [NTSB NYC90FA104](https://openairdocs.org/ntsb/NYC90FA104.md): Short Brothers SD3-60-200 · Jamaica, NY · Accident · No injuries · Field investigation · Final report · May 11, 1990 · N381MQ · Substantial damage > Pilot factor in that the pilot taxied into a hold position that was too close to a departing B-747, which resulted in the a/c being blown into a blast fence. Contributing was the lack of available information from the aircraft manufacturer which would have… - [NTSB NYC90DGM01](https://openairdocs.org/ntsb/NYC90DGM01.md): Air Tractor AT-400 · Tyrone, PA · Accident · Serious injuries · Final report · May 8, 1990 · N2369N · Destroyed > The pilot's failure to maintain adequate clearance from obstructions during low level aerial application operations. The pilot's inadequate visual lookout was a factor. - [NTSB LAX90LA110](https://openairdocs.org/ntsb/LAX90LA110.md): Cessna 208B · Lanai, HI · Accident · No injuries · Limited investigation · Final report · Mar 6, 1990 · N851FE · Substantial damage > The pilot's misjudgement of the glide path angle while executing a forced landing at the Lanai airport. Contributing to the accident was the failure of the pilot to properly secure the oil filter cap prior to departure. - [NTSB MKC90LA023](https://openairdocs.org/ntsb/MKC90LA023.md): Air Tractor AT-502 · Heafer, AR · Accident · Minor injuries · Limited investigation · Final report · Oct 13, 1989 · N1012Z · Substantial damage > The intentional swerve by the pilot during the takeoff roll. Contributing to the accident was the rough and soft terrain conditions. - [NTSB MIA89LA193](https://openairdocs.org/ntsb/MIA89LA193.md): Cessna 208B · Fort Myers, FL · Accident · No injuries · Limited investigation · Final report · Jul 12, 1989 · N921FE · Substantial damage > Improper flare by the pilot for landing and improper remedial action. A contributing factor was the lack of airspeed on final approach. - [NTSB DEN88IA207](https://openairdocs.org/ntsb/DEN88IA207.md): Beech 1900 · Denver, CO · Incident · No injuries · Incident investigation · Final report · Sep 17, 1988 · N32017 · Minor damage - [NTSB ANC88FA022](https://openairdocs.org/ntsb/ANC88FA022.md): Cessna 208 · Bethel, AK · Accident · Minor injuries · Field investigation · Final report · Dec 19, 1987 · N9438F · Substantial damage > The plt had planned to back taxi for takeoff on rwy 36. The tower controller asked if a rwy 18 departure would be acceptable to accommodate an arriving acft & the plt accepted a clnc. He started his takeoff with 3900' remaining on the 6399' rwy. After initial… - [NTSB CHI87FA191](https://openairdocs.org/ntsb/CHI87FA191.md): Beech B90 · Milwaukee, WI · Accident · No injuries · Field investigation · Final report · Aug 9, 1987 · N425K · Substantial damage > On departure the crew identified an in flight fire. An immediate shutdown of electrical, environmental and pressurization systems was initiated and a return was made to the airport with a successful landing. The fire was discovered to have occurred in the… - [NTSB LAX87LA250](https://openairdocs.org/ntsb/LAX87LA250.md): de Havilland DHC-6-300 · Grand Canyon, AZ · Accident · No injuries · Limited investigation · Final report · Jun 29, 1987 · N74GC · Substantial damage > While taxiing for takeoff, the underside of the left wing struck the boom of a backhoe parked adjacent to the aircraft ramp. The unattended backhoe was parked in a dirt area adjacent to the ramp with the boom in the extended position while the operator was on… - [NTSB ATL87FA161](https://openairdocs.org/ntsb/ATL87FA161.md): Cessna 208B · Atlanta, GA · Accident · No injuries · Field investigation · Final report · Jun 5, 1987 · N917FE · 2 aircraft · Substantial damage > The two acft collided on a ramp while each was taxiing to rwy 8L for t/o. both acft were authorized by ATC to taxi to the rwy; the Cessna was instructed by ATC to follow the Beech. The two acft were hdg in the same general direction on converging paths when… - [NTSB LAX87DVA09](https://openairdocs.org/ntsb/LAX87DVA09.md): Ayres S2R-T34 · Mendota, CA · Accident · No injuries · Final report · May 21, 1987 · N4012Y · Substantial damage > During an agricultural application flight, the aircraft struck a pole that was located 30 feet within the field boundary. The pilot stated that due to the dawn light and the way the pole blended in with the field along with a light amount of chemical on the… - [NTSB ANC86LA147](https://openairdocs.org/ntsb/ANC86LA147.md): de Havilland DHC-2 · Port Alsworth, AK · Accident · No injuries · Limited investigation · Final report · Sep 8, 1986 · N100KL · Substantial damage > The pilot was unable to avoid a large floating log in his water lane path during takeoff. He struck the log, lost control of the airplane and crashed. - [NTSB DEN85LA244](https://openairdocs.org/ntsb/DEN85LA244.md): Cessna 425 · Boulder, CO · Accident · No injuries · Limited investigation · Final report · Sep 19, 1985 · N1222B · Substantial damage > The plt said he made a normal ldg. During ldg roll the left brake would not respond to pedal application. The plt errored by incorrectly feathering both props. The a/c went off the eng of r/w and struck a fence. Examination of the brake system revealed a… - [NTSB FTW83FA270](https://openairdocs.org/ntsb/FTW83FA270.md): Air Tractor AT-400A · Lane City, TX · Accident · 1 fatal · Field investigation · Final report · Jun 9, 1983 · N31619 · Destroyed > The plt was leading a flt of 2 acft on an aerial application mission. The plt of the 2nd acft stated that at the end of a swath run, the lead acft pulled up to an almost vertical attitude & to an alt of between 300 & 400 ft AGL. At that time, the plane… - [NTSB FTW82DA372](https://openairdocs.org/ntsb/FTW82DA372.md): Air Tractor AT-400 · Muleshoe, TX · Accident · No injuries · Final report · Sep 9, 1982 · N2369N · Substantial damage > Pilot collided with a water spraying machine while making crop spray pass. Landing gear tore off. - [NTSB FTW82DA301](https://openairdocs.org/ntsb/FTW82DA301.md): Beech B99A · Abilene, TX · Accident · No injuries · Final report · Jul 28, 1982 · N326CA · Substantial damage > The pilot was in the left seat and was getting a check ride from the chief pilot who was in the right seat. After making a series of touch-and-go landings, the aircraft pulled slightly to the left during a takeoff. A full pattern was then flown to runway 17R… - [NTSB FTW81IA026](https://openairdocs.org/ntsb/FTW81IA026.md): Beech E18S · Albuquerque, NM · Incident · No injuries · Closed · Jan 23, 1981 · N432U · Minor damage - [NTSB FTW81FPM04](https://openairdocs.org/ntsb/FTW81FPM04.md): Beech E18S · Tulsa, OK · Accident · No injuries · Closed · Nov 26, 1980 · N202GW · Substantial damage - [NTSB FTW80FPD28](https://openairdocs.org/ntsb/FTW80FPD28.md): Aero-Comdr S-2R · Grandbury, TX · Accident · No injuries · Closed · May 6, 1980 · N5600X · Substantial damage - [NTSB ANC80FA025](https://openairdocs.org/ntsb/ANC80FA025.md): Dehavnd Can DHC-6 · Kenai, AK · Accident · Minor injuries · Closed · Jan 22, 1980 · N332MA · Substantial damage - [NTSB LAX78DUJ99](https://openairdocs.org/ntsb/LAX78DUJ99.md): Aero Comdr S2R · Gila Bend, AZ · Accident · No injuries · Closed · Aug 27, 1978 · N5052X · Destroyed - [NTSB CHI78FEE14](https://openairdocs.org/ntsb/CHI78FEE14.md): Beech E18 · Chicago, IL · Accident · No injuries · Closed · Dec 22, 1977 · N202GW · Substantial damage - [NTSB MIA69D0396](https://openairdocs.org/ntsb/MIA69D0396.md): Beech E18S · Nassau, Burkina Faso · Accident · No injuries · Closed · Mar 12, 1969 · N432U · Substantial damage - [NTSB UNK65X0805](https://openairdocs.org/ntsb/UNK65X0805.md): Beechcraft E18 · East Boston, MA · Accident · No injuries · Closed · Nov 23, 1964 · N432U · Substantial damage ## 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 ('52032', '52034')) ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC ``` This list as a web page: https://openairdocs.org/ntsb?engine=52032&page=13 --- 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.