# NTSB investigations: Amateur-built UNKNOWN ENG, OK

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.

## Latest cases

- [NTSB CEN26LA054](https://openairdocs.org/ntsb/CEN26LA054.md): Lou Malinchak Titan T-51D · Bristow, OK · Accident · Minor injuries · Class 4 · Limited · Final report · Nov 26, 2025 · N251LM · Substantial damage
  > The collision with two deer during takeoff which resulted in a loss of control and impact with terrain.
- [NTSB CEN25LA123](https://openairdocs.org/ntsb/CEN25LA123.md): Caldwell C W 162F · Mounds, OK · Accident · Minor injuries · Class 4 · Limited · Final report · Mar 13, 2025 · N124CW · Destroyed
  > The student pilot’s failure to maintain control of the helicopter during a precautionary landing, which resulted in a dynamic roll over and postimpact fire.
- [NTSB CEN23LA327](https://openairdocs.org/ntsb/CEN23LA327.md): Vans RV10 · Chouteau, OK · Accident · Minor injuries · Class 3 · Limited · Final report · Jul 21, 2023 · N730WL · Substantial damage
  > The total loss of engine power as a result of a failed positive crankcase ventilation (PCV) valve and a subsequent impact with terrain.
- [NTSB CEN23LA152](https://openairdocs.org/ntsb/CEN23LA152.md): Vans RV6 · Goldsby, OK · Accident · Minor injuries · Class 3 · Limited · Final report · Apr 8, 2023 · N48PS · Substantial damage
  > The engine electronic ignition system became disconnected, which resulted in a partial loss of engine power.
- [NTSB CEN22LA438](https://openairdocs.org/ntsb/CEN22LA438.md): Shirey David A Fisher Celebrity · Haskell, OK · Accident · No injuries · Class 4 · Limited · Final report · Sep 30, 2022 · N812TD · Destroyed
  > The inflight fire for reasons that could not be determined.
- [NTSB CEN22LA411](https://openairdocs.org/ntsb/CEN22LA411.md): Cessna T210L · Atoka, OK · Accident · No injuries · Class 4 · Limited · Final report · Aug 24, 2022 · N2317G · Substantial damage
  > The pilot's failure to land the airplane within the desired touchdown zone, which resulted in a long landing and collision with a fence.
- [NTSB CEN21LA074](https://openairdocs.org/ntsb/CEN21LA074.md): Zlin Savage Cub-S · Francis, OK · Accident · No injuries · Class 4 · Limited · Final report · Nov 15, 2020 · N9111 · Substantial damage
  > The pilot’s selection of unsuitable terrain for the landing, which resulted in a nose over when the airplane encountered soft sand during the landing roll.
- [NTSB CEN16FA307](https://openairdocs.org/ntsb/CEN16FA307.md): Wilson BUGATTI-DEMONGE 100P · Burns Flat, OK · Accident · 1 fatal · Field investigation · Final report · Aug 6, 2016 · N110PX · Destroyed
  > The pilot's failure to maintain airspeed following an engine anomaly during the initial climb after takeoff, which resulted in the airplane exceeding its critical angle of attack and experiencing an aerodynamic stall. Contributing to the accident was an…
- [NTSB CEN15CA168](https://openairdocs.org/ntsb/CEN15CA168.md): Jones Ronald C Bearhawk · Walters, OK · Accident · No injuries · Data collection · Final report · Mar 8, 2015 · N299BH · Substantial damage
  > The pilot did not maintain control of the airplane during the landing roll at night on an unlit grass strip.
- [NTSB CEN14FA046](https://openairdocs.org/ntsb/CEN14FA046.md): Mitsubishi MU 2B-25 · Owasso, OK · Accident · 1 fatal · Field investigation · Final report · Nov 10, 2013 · N856JT · Destroyed
  > The pilot's loss of airplane control during a known one-engine-inoperative condition. The reasons for the loss of control and engine shutdown could not be determined because the airplane was not equipped with a crash-resistant recorder and postaccident…
- [NTSB CEN13FA465](https://openairdocs.org/ntsb/CEN13FA465.md): Air Tractor AT-400 · Balko, OK · Accident · 1 fatal · Field investigation · Final report · Aug 5, 2013 · N3159B · Destroyed
  > The pilot's failure maintain clearance from a meteorological tower while en route at a low altitude. Contributing to the accident was the sun's glare.
- [NTSB DFW08CA229](https://openairdocs.org/ntsb/DFW08CA229.md): Sukhoi SU-31M · Collinsville, OK · Accident · No injuries · Data collection · Final report · Sep 14, 2008 · N531MS · Substantial damage
  > The pilot's failure to maintain clearance from marked transmission lines while on final approach.
- [NTSB DFW07FA071](https://openairdocs.org/ntsb/DFW07FA071.md): Stevens KB-2 · Oklahoma City, OK · Accident · 1 fatal · Field investigation · Final report · Feb 18, 2007 · N6KT · Substantial damage
  > The pilot's failure to maintain control of the gyroplane while in the traffic pattern. Contributing to the accident was the high wind with terrain induced turbulence and the absence of the gyroplane's horizontal stabilizer.
- [NTSB DFW05LA187](https://openairdocs.org/ntsb/DFW05LA187.md): Yakovlev Yak 52 · Claremore, OK · Accident · 1 fatal · Limited investigation · Final report · Jul 23, 2005 · N2331C · Substantial damage
  > The pilot's failure to obtain adequate airspeed while executing a low altitude aerobatic maneuver, which resulted in an aerodynamic stall while inverted. A factor was the low altitude.
- [NTSB DFW05LA012](https://openairdocs.org/ntsb/DFW05LA012.md): Huber DR 107 · Fletcher, OK · Accident · 1 fatal · Limited investigation · Final report · Oct 28, 2004 · N255HR · Destroyed
  > The pilot's inadequate planning/decision to conduct an aerobatic maneuver without sufficient altitude to recover.
- [NTSB FTW04FA167](https://openairdocs.org/ntsb/FTW04FA167.md): Bell 206B · Cushing, OK · Accident · 2 fatal · Field investigation · Final report · Jun 27, 2004 · N27TV · Destroyed
  > the pilot's inadequate in-flight planning/decision and his failure to maintain obstacle clearance. Contributing factors were low altitude flight, sun glare, and the static wires.
- [NTSB FTW02LA223](https://openairdocs.org/ntsb/FTW02LA223.md): Piper PA-36-285 · Altus, OK · Accident · No injuries · Limited investigation · Final report · Aug 2, 2002 · N57597 · Substantial damage
  > The loss of engine power as a result of the fracture of a compressor turbine blade due to fatigue. A contributing factor was the lack of suitable terrain for the forced landing.
- [NTSB FTW01LA120](https://openairdocs.org/ntsb/FTW01LA120.md): Kirchner Pietenpol Aircamper · Tulsa, OK · Accident · No injuries · Limited investigation · Final report · May 17, 2001 · N25157 · Substantial damage
  > the pilot's inadequate flare during the forced landing, which resulted in a hard landing. A contributing factor was the engine overheating due a stuck oil cooler thermostat valve, which resulted in a loss of power.
- [NTSB FTW00LA251](https://openairdocs.org/ntsb/FTW00LA251.md): Beech BE58 · Bethany, OK · Accident · No injuries · Limited investigation · Final report · Sep 6, 2000 · N84DE · Substantial damage
  > the fire, which ignited in the engine compartment for undetermined reasons while taxiing.
- [NTSB FTW95LA244](https://openairdocs.org/ntsb/FTW95LA244.md): Walter W. Bell Lazer Edge · El Reno, OK · Accident · 1 fatal · Limited investigation · Final report · Jun 14, 1995 · N33PE · Destroyed
  > The pilot's failure to maintain control resulting in an inadvertent stall/spin. Factors were the pilot's performance of aerobatic maneuvers at the low altitude.
- [NTSB DEN93FA075](https://openairdocs.org/ntsb/DEN93FA075.md): Wiley Pitts S-1-E · Walters, OK · Accident · 1 fatal · Field investigation · Final report · Jul 8, 1993 · N70BW · Destroyed
  > Performance of an aerobatic maneuver at an altitude insufficient for adequate terrain clearance.
- [NTSB FTW90DPJ08](https://openairdocs.org/ntsb/FTW90DPJ08.md): De Havilland Venom 112 MK4 · Muskogee, OK · Accident · 1 fatal · Final report · Jun 8, 1990 · N902DM · Destroyed
  > The pilot's premature rotation and the subsequent stall. A factor was the pilot's lack of experience in the airplane.
- [NTSB FTW78FPM21](https://openairdocs.org/ntsb/FTW78FPM21.md): Semco Chlngr · Tulsa, OK · Accident · Serious injuries · Closed · Jun 29, 1978 · N14554 · No damage
- [NTSB FTW74FPM15](https://openairdocs.org/ntsb/FTW74FPM15.md): Hughes 269B · Tulsa, OK · Accident · No injuries · Closed · Dec 22, 1973 · N11XC · Substantial damage
- [NTSB FTW72FPM33](https://openairdocs.org/ntsb/FTW72FPM33.md): Boeing A75 · Blocker, OK · Accident · No injuries · Closed · Jun 17, 1972 · N53390 · Substantial damage
- [NTSB FTW71FPM24](https://openairdocs.org/ntsb/FTW71FPM24.md): Aeronca 11AC · Vinita, OK · Accident · No injuries · Closed · May 3, 1971 · N85928 · Substantial damage
- [NTSB FTW70FPM07](https://openairdocs.org/ntsb/FTW70FPM07.md): Aeronca 11AC · Grove, OK · Accident · No injuries · Closed · May 16, 1970 · N85928 · Substantial damage
- [NTSB FTW67A0067](https://openairdocs.org/ntsb/FTW67A0067.md): Cessna P206 · Chickasha, OK · Accident · No injuries · Closed · Dec 29, 1966 · N2588X · Substantial damage
- [NTSB UNK65X0992](https://openairdocs.org/ntsb/UNK65X0992.md): Ryan ST3KR · Altus, OK · Accident · 2 fatal · Closed · Dec 12, 1964 · N88717 · Destroyed

## 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."eventStateOrRegion" = 'OK' AND c."eventCountry" = 'USA'
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('99999'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=99999&state=OK

---
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.