# NTSB investigations, OK: Unknown or undetermined

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 ERA26FA253](https://openairdocs.org/ntsb/ERA26FA253.md): Bellanca 14-19-2 · Goldsby, OK · Accident · 2 fatal · Class 3 · Field · Preliminary report · Jun 29, 2026 · N9846B · Destroyed
  > On June 29, 2026, at about 1055 central daylight time, a Bellanca 14-19-2, N9846B, was destroyed when it was involved in an accident in Goldsby, Oklahoma. The two pilots were fatally injured. The airplane was operated as a Title 14 Code of Federal Regulations…
- [NTSB CEN25FA320](https://openairdocs.org/ntsb/CEN25FA320.md): Cessna 172L · Walters, OK · Accident · 1 fatal · Class 3 · Field · Preliminary report · Aug 14, 2025 · N2860Q · Destroyed
  > On August 14, 2025, about 0934 central daylight time, a Cessna 172L, N2860Q, was destroyed when it was involved in an accident near Walters, Oklahoma. The pilot sustained fatal injuries. The airplane was operated under Title 14 Code of Federal Regulations as…
- [NTSB CEN24FA148](https://openairdocs.org/ntsb/CEN24FA148.md): Davis DA-3 · Antlers, OK · Accident · 3 fatal · Class 3 · Field · Final report · Apr 4, 2024 · N88DT · Destroyed
  > Impact with terrain for reasons that could not be determined.
- [NTSB CEN24LA104](https://openairdocs.org/ntsb/CEN24LA104.md): Piper PA24 · Cherokee, OK · Accident · No injuries · Class 3 · Limited · Final report · Feb 2, 2024 · N4284 · Substantial damage
  > A partial loss of engine power for reasons that could not be determined. Contributing to the accident was the presence of ground fog, which hindered the landing approach and resulted in the pilot inadvertently landing long and impacting a fence during the…
- [NTSB CEN23LA268](https://openairdocs.org/ntsb/CEN23LA268.md): Velocity Velocity XL · Tahlequah, OK · Accident · Serious injuries · Class 3 · Limited · Final report · Jun 27, 2023 · N340XL · Substantial damage
  > A total loss of engine power for undetermined reasons.
- [NTSB CEN23LA224](https://openairdocs.org/ntsb/CEN23LA224.md): Beech A36 · Oklahoma City, OK · Accident · No injuries · Class 3 · Limited · Final report · Jun 4, 2023 · N9169Q · Substantial damage
  > A loss of engine power during approach for landing for undetermined reasons.
- [NTSB CEN23FA060](https://openairdocs.org/ntsb/CEN23FA060.md): Beech F33A · Yukon, OK · Accident · 3 fatal · Class 3 · Field · Final report · Dec 6, 2022 · N9142Q · Destroyed
  > The pilot’s loss of airplane control for reasons that could not be determined.
- [NTSB CEN22LA311](https://openairdocs.org/ntsb/CEN22LA311.md): Rotorsport UK MTOSport 2017 · Mead, OK · Accident · No injuries · Class 3 · Limited · Final report · Jul 1, 2022 · N44AL · Substantial damage
  > A partial loss of engine power for reasons that could not be determined.
- [NTSB CEN22FA053](https://openairdocs.org/ntsb/CEN22FA053.md): Bell 206 · Perry, OK · Accident · 1 fatal · Class 3 · Field · Final report · Nov 28, 2021 · N59600 · Destroyed
  > A loss of lateral control during a hover that resulted in an impact with terrain. Based on the available evidence, the reason for the loss of lateral control could not be determined.
- [NTSB CEN20LA413](https://openairdocs.org/ntsb/CEN20LA413.md): Cosmos Phase 3 · Wayne, OK · Accident · Fatal · Class 3 · Limited · Final report · Sep 19, 2020 · N7024L · Substantial damage
  > A loss of control while taxiing for reasons that could not be determined based on available evidence.
- [NTSB CEN20LA266](https://openairdocs.org/ntsb/CEN20LA266.md): Lancair ES-P · Pauls Valley, OK · Accident · Serious injuries · Class 3 · Limited · Final report · Jul 6, 2020 · N444TW · Destroyed
  > The reason for this accident could not be determined based on the available information.
- [NTSB CEN18FA310](https://openairdocs.org/ntsb/CEN18FA310.md): Extra EA 400 · Ponca City, OK · Accident · 5 fatal · Class 3 · Field · Final report · Aug 4, 2018 · N13EP · Destroyed
  > The pilot's loss of control for reasons that could not be determined with the available evidence.
- [NTSB CEN17FA170](https://openairdocs.org/ntsb/CEN17FA170.md): Air Tractor AT 602 · Hollis, OK · Accident · 1 fatal · Field investigation · Final report · Apr 28, 2017 · N604RH · Substantial damage
  > An impact with terrain during final approach for reasons that could not be determined because no evidence of an in-flight failure or malfunction was observed.
- [NTSB CEN17FA138](https://openairdocs.org/ntsb/CEN17FA138.md): Beech V35 · Union City, OK · Accident · 1 fatal · Field investigation · Final report · Mar 24, 2017 · N2053Y · Destroyed
  > The pilot's improper recovery from a spin.
- [NTSB CEN16LA386](https://openairdocs.org/ntsb/CEN16LA386.md): Bell 407 · Lawton, OK · Accident · Serious injuries · Limited investigation · Final report · Sep 29, 2016 · N361SF · Substantial damage
  > The pilot's loss of helicopter control during landing, which resulted in a hard landing and collision with a wall.
- [NTSB CEN15LA204](https://openairdocs.org/ntsb/CEN15LA204.md): Grumman G 164A · Maysville, OK · Accident · Minor injuries · Limited investigation · Final report · Apr 15, 2015 · N7951 · Substantial damage
  > The loss of engine power for reasons that could not be determined because a postaccident examination of the airframe and engine did not reveal any anomalies that would have precluded normal operation.
- [NTSB CEN15FA127](https://openairdocs.org/ntsb/CEN15FA127.md): Eagleston John H Vans RV9A · Kingston, OK · Accident · 1 fatal · Field investigation · Final report · Jan 28, 2015 · N708JE · Substantial damage
  > The pilot’s continuation of a banked turn following the loss of engine power, which resulted in his failure to maintain adequate airspeed and the airplane exceeding its critical angle of attack and entering an accelerated stall at low altitude. Contributing…
- [NTSB CEN15TA019](https://openairdocs.org/ntsb/CEN15TA019.md): BAE Systems Hawk MK 67 · Oklahoma City, OK · Accident · No injuries · Final report · Oct 18, 2014 · N509XX · Substantial damage
  > The loss of directional control during the takeoff roll for reasons that could not be determined during postaccident examinations and testing.
- [NTSB CEN13FA221](https://openairdocs.org/ntsb/CEN13FA221.md): Mooney M20J · Collinsville, OK · Accident · 2 fatal · Field investigation · Final report · Apr 7, 2013 · N57672 · Destroyed
  > The pilot’s loss of control of the airplane for reasons that could not be determined because an examination of the airplane did not find an abnormality that would have precluded normal operations.
- [NTSB CEN13FA137](https://openairdocs.org/ntsb/CEN13FA137.md): Beech 95-B55 (T42A) · Mangum, OK · Accident · 3 fatal · Field investigation · Final report · Jan 19, 2013 · N143E · Substantial damage
  > The airplane's aerodynamic stall/spin at low altitude and subsequent impact with terrain for reasons that could not be determined during postaccident examinations. Contributing to the accident was the pilot's lack of currency/proficiency.
- [NTSB CEN12LA047](https://openairdocs.org/ntsb/CEN12LA047.md): Saber Trike unk · Okmulgee, OK · Accident · Serious injuries · Limited investigation · Final report · Oct 15, 2011 · UNREG · Substantial damage
  > The in-flight collision with electrical wires for undetermined reasons.
- [NTSB CEN11LA385](https://openairdocs.org/ntsb/CEN11LA385.md): Wiley C W RV-6A · Colgate, OK · Accident · No injuries · Limited investigation · Final report · Jun 13, 2011 · N80WW · Substantial damage
  > The loss of engine power for undetermined reasons.
- [NTSB CEN10CA517](https://openairdocs.org/ntsb/CEN10CA517.md): Beech D35 · Guymon, OK · Accident · Minor injuries · Data collection · Final report · Sep 1, 2010 · N3446B · Substantial damage
  > The loss of engine power for undetermined reasons.
- [NTSB CEN09CA569](https://openairdocs.org/ntsb/CEN09CA569.md): Cessna T210 · Tulsa, OK · Accident · No injuries · Data collection · Final report · Sep 7, 2009 · N6442Y · Substantial damage
  > A temporary loss of elevator pitch control for undetermined reasons.
- [NTSB CEN09CA563](https://openairdocs.org/ntsb/CEN09CA563.md): Halbert James H Rans S-7 · Short, OK · Accident · Minor injuries · Data collection · Final report · Sep 6, 2009 · N615JH · Destroyed
  > A partial loss of engine power for undetermined reasons.

## 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 s.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' s WHERE s."tier2Number" = '000' AND s.case_mkey IN (SELECT case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' WHERE "isDefiningEvent"))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-events/000/sequence?state=OK

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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.