Final NTSB investigations: Pratt & Whitney PT6A series
608 cases on aircraft whose registry engine model is Pratt & Whitney PT6A series. Aircraft are matched to the registry by N-number and event date, checked against the reported serial number, make and model, so older matches can be wrong.
Cases per year
| 1964 | 1 |
|---|---|
| 1969 | 1 |
| 1977 | 1 |
| 1978 | 1 |
| 1980 | 3 |
| 1981 | 1 |
| 1982 | 2 |
| 1983 | 1 |
| 1985 | 1 |
| 1986 | 1 |
| 1987 | 5 |
| 1988 | 1 |
| 1989 | 2 |
| 1990 | 3 |
| 1991 | 5 |
| 1992 | 6 |
| 1993 | 2 |
| 1994 | 7 |
| 1995 | 10 |
| 1996 | 9 |
| 1997 | 22 |
| 1998 | 13 |
| 1999 | 13 |
| 2000 | 19 |
| 2001 | 24 |
| 2002 | 27 |
| 2003 | 32 |
| 2004 | 24 |
| 2005 | 24 |
| 2006 | 21 |
| 2007 | 28 |
| 2008 | 20 |
| 2009 | 19 |
| 2010 | 17 |
| 2011 | 23 |
| 2012 | 21 |
| 2013 | 20 |
| 2014 | 19 |
| 2015 | 14 |
| 2016 | 24 |
| 2017 | 19 |
| 2018 | 15 |
| 2019 | 16 |
| 2020 | 18 |
| 2021 | 9 |
| 2022 | 11 |
| 2023 | 9 |
| 2024 | 16 |
| 2025 | 5 |
| 2026 | 3 |
Where
Open the mapLatest cases
Query with SQL
duckdb -csv -c "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.\"completionStatus\" = 'Completed'
AND 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"Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.
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."completionStatus" = 'Completed'
AND 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" DESCRun it at the DuckDB prompt, or in any tool that reads Parquet over HTTPS. More ways to query the release are on Use the data.
NTSB ERA26LA148Accident · No injuriesClass 4 · LimitedFinal reportCessna 208 · North Canton, OHThe flight instructor’s decision to conduct a training flight in strong, gusting crosswinds, which resulted in the airplane’s right wing impacting the ground during taxi.NTSB CEN26LA128Accident · No injuriesClass 4 · LimitedFinal reportAir Tractor AT-502 · Larose, LAThe pilot’s improper fuel planning and his failure to adequately monitor the fuel level during flight, which resulted in fuel exhaustion, and a total loss of engine power. Contributing to the accident was the pilot’s lack of attention performing the task,…NTSB CEN26LA127Accident · No injuriesClass 4 · LimitedFinal reportRaytheon B36TC · Durango, COThe pilot’s improper landing flare and subsequent loss of directional control while attempting to land during high crosswind conditions.NTSB CEN26LA036Accident · Serious injuriesClass 4 · LimitedFinal reportAir Tractor AT-502 · Gueydan, LAThe pilot’s failure to maintain situational awareness and clearance from terrain while maneuvering to avoid birds.NTSB CEN25LA394Accident · No injuriesClass 4 · LimitedFinal reportPiper PA46 · Henderson, TXThe pilot’s failure to extend the main landing gear prior to landing, which resulted in a gear up landing. Contributing to the accident was the pilot’s distraction during the approach.NTSB ANC25LA110Accident · No injuriesClass 4 · LimitedFinal reportCessna 208B · Healy, AKThe pilot’s failure to maintain directional control during the departure roll resulting in a collision with a tractor/loader.NTSB WPR25LA122Accident · No injuriesClass 3 · LimitedFinal reportBeech C90A · Helena, MTThe failure of the left main landing gear to fully extend and lock as a result of broken downlock switch wires and the failure of the pilots to complete the manual gear extension checklist.NTSB ERA25FA119Accident · 1 fatalClass 3 · FieldFinal reportCessna 208 · Pierson, FLThe non-instrument-rated pilot’s continued visual flight into instrument meteorological conditions, which resulted in spatial disorientation and a subsequent loss of control.NTSB ANC25LA011Accident · No injuriesClass 3 · LimitedFinal reportRaytheon C90A · Honolulu, HIA temporary reduction in the airplane’s braking effectiveness during engine start following an exterior wash, which resulted in its uncommanded forward movement and collision with a parked airplane. Contributing to the accident was the flight crew’s delayed…NTSB CEN25LA002Accident · No injuriesClass 4 · LimitedFinal reportAir Tractor AT-402A · Moffett, OKThe tail wheel assembly’s fractured bolt which resulted in the pilot’s loss of directional control during landing.NTSB WPR24LA308Accident · No injuriesClass 4 · LimitedFinal reportRaytheon B200 · Las Vegas, NMThe airplane’s collision with an elk during landing.NTSB WPR24FA255Accident · 1 fatalClass 3 · FieldFinal reportAir Tractor AT-802A · Izee, ORThe pilot’s controlled flight into terrain while maneuvering through an area of low visibility due to wildfire smoke and haze.NTSB CEN24FA260Accident · 1 fatalClass 3 · FieldFinal reportAir Tractor AT-502B · Bonita, LAThe failure of both pilots to see and avoid the other airplane while at low altitude enroute to their aerial application flights.NTSB CEN24LA246Accident · No injuriesClass 4 · LimitedFinal reportAir Tractor AT-402 · Helm, MSThe pilot’s failure to maintain control, which resulted in an aerodynamic stall and impact with terrain.NTSB WPR24FA201Accident · 1 fatalClass 3 · FieldFinal reportAir Tractor AT-802 · Arco, IDA midair collision between two airplanes during aerial application operations due to both pilots’ insufficient awareness of their proximity to each other and their failure to see and avoid each other. Contributing to the accident was the operator and both…NTSB WPR24LA186Accident · No injuriesClass 4 · LimitedFinal reportGrumman/Schweizer G-164D · Richvale, CAThe pilot’s decision to take off with a tailwind and their failure to maintain clearance from terrain.NTSB CEN24LA216Accident · Serious injuriesClass 4 · LimitedFinal reportAir Tractor AT-402 · Perryton, TXThe pilot’s exceedance of the airplane’s critical angle of attack during a low-level turn, which resulted in an aerodynamic stall and loss of airplane control at too low of an altitude to recover.NTSB CEN24LA193Accident · No injuriesClass 3 · LimitedFinal reportAir Tractor AT-502 · Covert, KSThe improper maintenance of the fuel control unit, which resulted in air leakage and a loss of control of fuel flow to the engine.NTSB CEN24FA179Accident · 2 fatalClass 3 · FieldFinal reportPiper PA46-500TP · Marianna, ARThe pilot’s exceedance of the airplane’s design limitations, which resulted in an in-flight breakup.NTSB CEN24LA175Accident · Serious injuriesClass 4 · LimitedFinal reportAir Tractor AT-802A · England, ARThe pilot’s failure to maintain clearance from tower guy wires while maneuvering during a low-level aerial application flight.NTSB CEN24LA165Accident · No injuriesClass 4 · LimitedFinal reportAir Tractor AT-502B · Olney, TXThe pilot’s failure to maintain directional control of the airplane during landing in gusty wind conditions.NTSB CEN24LA153Accident · No injuriesClass 4 · LimitedFinal reportBeech B300 · Oklahoma City, OKAn in-flight collision with a bird during the initial climb.NTSB ERA24LA094Incident · No injuriesClass 3 · LimitedFinal reportCessna 208 · Dulles, VAThe pilot-in-command’s approach to the critical angle of attack during initial climb, which resulted in a vibration the flight crew improperly identified as an engine issue and resulted in the subsequent off-airport landing. Contributing to the accident was…NTSB WPR24LA070Accident · No injuriesClass 3 · LimitedFinal reportAir Tractor AT-502A · Stratford, CAA partial loss of engine power due to the malfunction of the engine compressor bleed-off valve.NTSB CEN24LA058Accident · No injuriesClass 4 · LimitedFinal reportPiper PA46-500TP · Ann Arbor, MIThe airplane’s encounter with unexpected wind shear during final approach, which resulted in a hard landing short of the runway.NTSB CEN24FA021Accident · 1 fatalClass 3 · FieldFinal reportAir Tractor AT-502B · Vidalia, LAThe pilot’s failure to maintain clearance from power lines during an aerial application flight. Contributing to the accident was the pilot’s cell phone use and the position of the sun, which reduced the pilot’s ability to perceive the location of the power…NTSB ERA24LA012Accident · No injuriesClass 3 · LimitedFinal reportBeech 300 · Atlanta, GAThe pilot’s failure to maintain a proper approach speed, which resulted in a runway overrun. Contributing to the runway overrun were the pilot’s application of full reverse at an airspeed higher than that allowed by the system, which added power and forward…NTSB WPR23LA333Accident · No injuriesClass 4 · LimitedFinal reportAyres S2R-T34 · Three Rocks, CAThe airplane’s exceedance of the critical angle of attack, resulting in an aerodynamic stall and impact with terrain.NTSB CEN23LA377Accident · No injuriesClass 3 · LimitedFinal reportAir Tractor AT-502 · Great Bend, NDThe pilot’s hard landing on a road and subsequent loss of control, resulting in the airplane impacting a ditch.NTSB ERA23LA327Accident · No injuriesClass 3 · LimitedFinal reportAir Tractor AT502 · Leipsic, OHThe incorrect assembly of the turbine engine’s reduction gear box second-stage ring gear, which resulted in an internal failure of multiple engine components and a total loss of power.NTSB CEN23LA317Accident · No injuriesClass 3 · LimitedFinal reportGrumman G-164A · Patoka, ILA partial loss of engine power due to the failure of two compressor turbine blades as a result of the engine operating near or above the engine’s operating limits for an undetermined amount of time beyond the recommended engine’s TBO limit, which led to…NTSB WPR23LA217Accident · Minor injuriesClass 4 · LimitedFinal reportAir Tractor AT-502B · Bakersfield, CAThe pilot’s improper use of flaps during the takeoff sequence which resulted in a runway overrun and collision with trees.NTSB ERA23LA215Accident · No injuriesClass 4 · LimitedFinal reportAir Tractor AT-402A · Good Hope, ALThe pilot’s decision to land on a runway where there was insufficient clearance from obstructions (wheat crop) to operate safely.NTSB ANC23FA008Accident · 3 fatalClass 3 · FieldFinal reportRaytheon C90A · Kaupo, HIGuardian Flight’s inadequate pilot training and performance tracking, which failed to identify and correct the pilot’s consistent lack of skill, and which resulted in the pilot’s inability to maintain his position inflight using secondary instruments to…NTSB ERA22FA350Accident · 1 fatalClass 3 · FieldFinal reportAir Tractor AT-502 · Cheneyville, LAThe pilot’s loss of control after exceeding the airplane’s critical angle of attack for reasons that could not be determined.NTSB CEN22LA335Accident · 1 fatalClass 3 · LimitedFinal reportAyres S2R-T34 · Parkin, ARThe pilot’s failure to maintain clearance from tower guy wires while maneuvering.NTSB CEN22LA371Accident · No injuriesClass 4 · LimitedFinal reportAyres S2R-T65 · Wyman / Washington, IAThe pilot not maintaining sufficient altitude to clear an obstruction during the aerial application flight.NTSB CEN22LA342Accident · No injuriesClass 4 · LimitedFinal reportAir Tractor AT-502 · East Grand Forks, MNThe pilot’s failure to maintain clearance from the power lines during a low-level application pass.NTSB CEN22LA310Accident · No injuriesClass 4 · LimitedFinal reportAir Tractor AT-502B · Wyoming, ILThe pilot’s improper landing flare, which resulted in a hard, bounced landing.NTSB ERA22LA302Accident · No injuriesClass 3 · LimitedFinal reportAir Tractor AT-502B · Center Cross, VAA loss of engine power for reasons that could not be determined.NTSB WPR22FA197Accident · 1 fatalClass 3 · FieldFinal reportCessna 208B · Oceanside, CAThe right-seated pilot’s failure to correct the left-seated pilot’s mismanagement of the engine thrust, which resulted in undesired speed and thrust oscillations during the final approach and a subsequent descent into terrain.NTSB WPR21LA368Accident · No injuriesClass 4 · LimitedFinal reportAir Tractor AT-602 · Sacramento, CAThe pilot's inadequate fuel management, which resulted in a total loss of engine power due to fuel starvation.NTSB CEN22LA149Accident · No injuriesClass 4 · LimitedFinal reportCessna 208B · Grapevine, TXThe failure of the pilot of the second aircraft to maintain a safe distance from the lead airplane while taxiing, which resulted in a ground collision.NTSB CEN22LA138Accident · No injuriesClass 3 · LimitedFinal reportBeech 200 · Gulfport, MSThe failure of the right main landing gear actuator, which led to a gear-up landing.NTSB CEN22FA081Accident · 2 fatalClass 3 · FieldFinal reportCessna 208 · Fulshear, TXThe limitations of the see-and-avoid concept as a method for self-separation of aircraft, which resulted in an inflight collision. Contributing to the accident was the absence of collision avoidance technology on both aircraft.NTSB CEN21FA376Accident · 1 fatalClass 3 · FieldFinal reportSocata TBM 700 · Urbana, OHThe pilot’s failure to arrest the airplane’s left roll and rapid descent for reasons that could not be determined based on the available evidence.NTSB WPR21LA313Accident · Serious injuriesClass 3 · LimitedFinal reportCessna 425 · Helena, MTA flameout of both engines due to fuel starvation for reasons that could not be determined due to the airplane’s damage.NTSB WPR21LA310Accident · Serious injuriesClass 4 · LimitedFinal reportAir Tractor AT-802A · Fort Sumner, NMThe pilot's failure to maintain adequate clearance from a windmill while maneuvering during an aerial application flight.NTSB ERA21LA287Accident · No injuriesClass 3 · LimitedFinal reportPiper PA46-500TP · Manteo, NCThe improperly secured pneumatic compressor discharge air (P3) line coupling nut on the engine, which ultimately allowed the nut to back off resulting in a partial loss of engine power.NTSB CEN21LA286Accident · Minor injuriesClass 3 · LimitedFinal reportAyres S2R-T34 · Leoti, KSThe pilot’s loss of visibility in the cockpit due to foam created by the chemicals loaded in the hopper, which resulted in his inability to maintain airplane control during low-level flight and an impact with terrain. Contributing to the accident was the…