# Final NTSB investigations: 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.

Page 1 of 12 · 589 cases

## Latest cases

- [NTSB ANC25LA121](https://openairdocs.org/ntsb/ANC25LA121.md): Maule M-4-210C · Lime Village, AK · Accident · No injuries · Class 4 · Limited · Final report · Sep 18, 2025 · N4612T · Substantial damage
  > A collision with terrain during takeoff.
- [NTSB WPR25LA212](https://openairdocs.org/ntsb/WPR25LA212.md): Cessna T240 · San Diego, CA · Accident · 1 fatal · Class 4 · Limited · Final report · Jul 13, 2025 · N636CS
  > Impact with the ocean for reasons that could not be determined because the pilot and airplane were not located.
- [NTSB ERA25LA216](https://openairdocs.org/ntsb/ERA25LA216.md): Cessna 172F · Vero Beach, FL · Accident · Minor injuries · Class 4 · Limited · Final report · Jun 2, 2025 · N5200F · Substantial damage
  > A total loss of engine power for reasons that could not be determined.
- [NTSB CEN25LA164](https://openairdocs.org/ntsb/CEN25LA164.md): Air Tractor AT802 · Atlantic Ocean, Canada · Accident · 1 fatal · Class 4 · Limited · Final report · Apr 29, 2025 · N4025K · Destroyed
  > The airplane’s impact with the ocean for undetermined reasons based on the available evidence.
- [NTSB CEN25LA149](https://openairdocs.org/ntsb/CEN25LA149.md): Pphu Ekolot KR-030 Topaz · Platteville, WI · Accident · Serious injuries · Class 3 · Limited · Final report · Apr 8, 2025 · N568RD · Substantial damage
  > The pilot’s failure to maintain clearance from terrain for reasons which could not be determined.
- [NTSB ANC25LA019](https://openairdocs.org/ntsb/ANC25LA019.md): Piper PA-18-150 · Wasilla, AK · Accident · No injuries · Class 3 · Limited · Final report · Feb 21, 2025 · N2447J · Substantial damage
  > A total loss of engine power for undetermined reasons.
- [NTSB WPR25LA082](https://openairdocs.org/ntsb/WPR25LA082.md): Cessna 172K · Columbia, CA · Accident · Serious injuries · Class 3 · Limited · Final report · Jan 23, 2025 · N79910 · Substantial damage
  > A partial loss of engine power for undetermined reasons.
- [NTSB WPR25LA080](https://openairdocs.org/ntsb/WPR25LA080.md): Piper PA-32-300 · Round Mountain, NV · Accident · 1 fatal · Class 3 · Limited · Final report · Jan 2, 2025 · N4151R · Substantial damage
  > Impact with mountainous terrain for reasons that could not be determined due to a lack of available evidence.
- [NTSB CEN25LA058](https://openairdocs.org/ntsb/CEN25LA058.md): Vans RV8 · Smithville, TX · Accident · Serious injuries · Class 3 · Limited · Final report · Dec 10, 2024 · N42CS · Substantial damage
  > A loss of engine power for undetermined reasons.
- [NTSB ERA25LA051](https://openairdocs.org/ntsb/ERA25LA051.md): James A Gray Just Aircraft Highlander · Fountain Inn, SC · Accident · Minor injuries · Class 3 · Limited · Final report · Nov 18, 2024 · N102XP · Substantial damage
  > A total loss of engine power for undetermined reasons.
- [NTSB WPR25LA039](https://openairdocs.org/ntsb/WPR25LA039.md): Piper PA32-300 · Pomona, CA · Accident · Serious injuries · Class 3 · Limited · Final report · Nov 17, 2024 · N617ET · Substantial damage
  > A total loss of engine power during final approach for reasons that could not be determined.
- [NTSB ERA25LA044](https://openairdocs.org/ntsb/ERA25LA044.md): Schweizer 269C-1 · Boalsburg, PA · Accident · No injuries · Class 3 · Limited · Final report · Nov 10, 2024 · N504JN · Substantial damage
  > A loss of engine power for reasons that could not be determined.
- [NTSB WPR25LA027](https://openairdocs.org/ntsb/WPR25LA027.md): Cirrus Design SR20 · St. George, UT · Accident · No injuries · Class 3 · Limited · Final report · Oct 28, 2024 · N27WF · Destroyed
  > A partial loss of power for reasons that could not be determined due to postimpact fire damage.
- [NTSB CEN25LA020](https://openairdocs.org/ntsb/CEN25LA020.md): Starship Enterprise · Addison, TX · Accident · No injuries · Class 4 · Limited · Final report · Oct 17, 2024 · N903SC · Substantial damage
  > Foreign object debris damage to the ventral stabilizer.
- [NTSB CEN24LA344](https://openairdocs.org/ntsb/CEN24LA344.md): Bellanca 7GCAA · Rifle, CO · Accident · Serious injuries · Class 3 · Limited · Final report · Sep 8, 2024 · N36008 · Substantial damage
  > A total loss of engine power for undetermined reasons.
- [NTSB ERA24FA365](https://openairdocs.org/ntsb/ERA24FA365.md): Grumman American Avn. AA-5 · Rockmart, GA · Accident · 2 fatal · Class 3 · Field · Final report · Sep 4, 2024 · N9659L · Substantial damage
  > A total loss of engine power for undetermined reasons. Also causal was the flight instructor’s failure to maintain adequate airspeed during the forced landing attempt, which resulted in exceedance of the airplane’s critical angle of attack and an aerodynamic…
- [NTSB CEN24LA336](https://openairdocs.org/ntsb/CEN24LA336.md): Cessna 182D · Coopersville, MI · Accident · Class 4 · Limited · Final report · Aug 31, 2024 · N9020X · Substantial damage
  > The loss of airplane control while landing.
- [NTSB ERA24LA361](https://openairdocs.org/ntsb/ERA24LA361.md): Cessna 172 · Lynchburg, VA · Accident · No injuries · Class 3 · Limited · Final report · Aug 29, 2024 · N734SY · Substantial damage
  > A total loss of engine power for undetermined reasons.
- [NTSB WPR24FA287](https://openairdocs.org/ntsb/WPR24FA287.md): Pitts S1 · Santa Paula, CA · Accident · Serious injuries · Class 3 · Field · Final report · Aug 25, 2024 · N42JF · Destroyed
  > The total loss of engine power at low altitude for reasons that could not be determined.
- [NTSB CEN24FA312](https://openairdocs.org/ntsb/CEN24FA312.md): Engineering & Research Ercoupe 415-C · Elkhart, IL · Accident · 1 fatal · Class 3 · Field · Final report · Aug 7, 2024 · N3093H · Destroyed
  > An off-airport landing in a soybean field for reasons that could not be determined. Contributing to the severity of the pilot’s injuries and airplane damage was a fire that occurred at an unknown time.
- [NTSB CEN24FA298](https://openairdocs.org/ntsb/CEN24FA298.md): DeGraw DeBird · Napoleon, MI · Accident · 1 fatal · Class 3 · Field · Final report · Aug 4, 2024 · N140DG · Substantial damage
  > Separation of the gyroplane’s tail due to main rotor blade contact for reasons that could not be determined.
- [NTSB WPR24LA269](https://openairdocs.org/ntsb/WPR24LA269.md): Protech PT2 · Lodi, CA · Accident · No injuries · Class 3 · Limited · Final report · Aug 3, 2024 · N657MJ · Substantial damage
  > A reported loss of engine power for reasons that could not be determined.
- [NTSB ERA24LA335](https://openairdocs.org/ntsb/ERA24LA335.md): Hendrickson Glasair 3 · Oxford, ME · Accident · Serious injuries · Class 3 · Limited · Final report · Aug 3, 2024 · N121CH · Substantial damage
  > A loss of engine power for reasons that could not be determined.
- [NTSB CEN24LA303](https://openairdocs.org/ntsb/CEN24LA303.md): Robinson Helicopter R44 · Bryant, IA · Accident · No injuries · Class 3 · Limited · Final report · Aug 3, 2024 · N225ML · Substantial damage
  > A loss of engine power during takeoff for reasons that could not be determined, resulting in impact with terrain.
- [NTSB ANC24LA073](https://openairdocs.org/ntsb/ANC24LA073.md): De Havilland DHC2 · Anchorage, AK · Accident · No injuries · Class 3 · Limited · Final report · Aug 2, 2024 · N4444Z · Substantial damage
  > A partial loss of power during takeoff climb for undetermined reasons.
- [NTSB WPR24LA259](https://openairdocs.org/ntsb/WPR24LA259.md): Beech C23 · Elko, NV · Accident · Minor injuries · Class 3 · Limited · Final report · Jul 28, 2024 · N2248L · Substantial damage
  > A total loss of engine power for reasons that could not be determined.
- [NTSB ERA24FA304](https://openairdocs.org/ntsb/ERA24FA304.md): Air Tractor AT802 · Cuba, KY · Accident · 1 fatal · Class 3 · Field · Final report · Jul 13, 2024 · N2003Y · Substantial damage
  > Impact with terrain for reasons that could not be determined.
- [NTSB ANC24LA064](https://openairdocs.org/ntsb/ANC24LA064.md): Dehavilland DHC-2T · Petersville, AK · Accident · No injuries · Class 3 · Limited · Final report · Jul 13, 2024 · N535KT · Substantial damage
  > An in-flight loss of thrust due to an uncommanded feathering of the propeller for reasons that could not be determined.
- [NTSB ERA24FA300](https://openairdocs.org/ntsb/ERA24FA300.md): Piper PA-28-161 · Palm Beach Gardens, FL · Accident · 2 fatal · Class 3 · Field · Final report · Jul 10, 2024 · N81250 · Substantial damage
  > A loss of engine power for reasons that could not be determined.
- [NTSB CEN24LA249](https://openairdocs.org/ntsb/CEN24LA249.md): Rotorway 162 F · Maybee, MI · Accident · No injuries · Class 3 · Limited · Final report · Jul 4, 2024 · N426DM · Substantial damage
  > A partial loss of engine power for undetermined reasons.
- [NTSB CEN24LA245](https://openairdocs.org/ntsb/CEN24LA245.md): Raytheon A36 · Land O' Lakes, WI · Accident · Minor injuries · Class 3 · Limited · Final report · Jun 30, 2024 · N47RT · Substantial damage
  > A partial loss of engine power for undetermined reasons.
- [NTSB WPR24FA213](https://openairdocs.org/ntsb/WPR24FA213.md): Grumman Acft ENG Cor-Schweizer G-164A · Chamberino, NM · Accident · 1 fatal · Class 3 · Field · Final report · Jun 25, 2024 · N9709 · Destroyed
  > An aerodynamic stall and loss of control for reasons that could not be determined based on the available information.
- [NTSB ERA24LA277](https://openairdocs.org/ntsb/ERA24LA277.md): Piper PA-28-151 · Fire Island, NY · Accident · No injuries · Class 3 · Limited · Final report · Jun 24, 2024 · N890MA · Substantial damage
  > A total loss of engine power for undetermined reasons.
- [NTSB WPR24FA200](https://openairdocs.org/ntsb/WPR24FA200.md): Robinson Helicopter R44 II · Bluestem, WA · Accident · 2 fatal · Class 3 · Field · Final report · Jun 19, 2024 · N323TT · Destroyed
  > The pilot’s failure to manage main rotor rpm during an autorotation, which resulted in a loss of helicopter control. Contributing to the accident was a loss of power for reasons that could not be determined.
- [NTSB ERA24LA267](https://openairdocs.org/ntsb/ERA24LA267.md): Garlick Helicopters OH-58A+ · Cisco, GA · Accident · Minor injuries · Class 3 · Limited · Final report · Jun 18, 2024 · N72BM · Substantial damage
  > A reported total loss of engine power for reasons that could not be determined.
- [NTSB WPR24LA193](https://openairdocs.org/ntsb/WPR24LA193.md): Cessna A185F · Monument Hills, CA · Accident · No injuries · Class 3 · Limited · Final report · Jun 12, 2024 · N8WF · Substantial damage
  > A total loss of engine power for reasons that could not be determined.
- [NTSB ANC24LA049](https://openairdocs.org/ntsb/ANC24LA049.md): Dehavilland Beaver L-20A (DHC-2) · Port Alsworth, AK · Accident · Serious injuries · Class 3 · Limited · Final report · Jun 11, 2024 · N4957 · Substantial damage
  > A partial loss of engine power for reasons that could not be determined.
- [NTSB ERA24LA256](https://openairdocs.org/ntsb/ERA24LA256.md): Zenith 701 · Ocala, FL · Accident · Minor injuries · Class 3 · Limited · Final report · Jun 8, 2024 · N643E · Substantial damage
  > The pilot’s failure to maintain aircraft control and his exceedance of the airplane’s critical angle of attack, which resulted in an aerodynamic stall and spin during an attempted go-around.
- [NTSB ERA24LA241](https://openairdocs.org/ntsb/ERA24LA241.md): Cessna 172 · Terryville, CT · Accident · Minor injuries · Class 3 · Limited · Final report · Jun 3, 2024 · N78445 · Substantial damage
  > A total loss of engine power for undetermined reasons.
- [NTSB WPR24LA160](https://openairdocs.org/ntsb/WPR24LA160.md): Steen Skybolt · Santa Maria, CA · Accident · Minor injuries · Class 3 · Limited · Final report · May 26, 2024 · N873X · Substantial damage
  > A total loss of engine power during approach for reasons that could not be determined.
- [NTSB CEN24LA203](https://openairdocs.org/ntsb/CEN24LA203.md): Pulsar Super Pulsar · Rochelle, IL · Accident · No injuries · Class 3 · Limited · Final report · May 25, 2024 · N912GR · Substantial damage
  > A partial loss of engine power for undetermined reasons.
- [NTSB CEN24FA167](https://openairdocs.org/ntsb/CEN24FA167.md): Vertical Aviation Technologies Hummingbird · Spring Branch, TX · Accident · 2 fatal · Class 3 · Field · Final report · Apr 29, 2024 · N829SH · Destroyed
  > A total loss of engine power for undetermined reasons, which resulted in a forced landing and a subsequent impact with terrain.
- [NTSB WPR24FA132](https://openairdocs.org/ntsb/WPR24FA132.md): Bell 206-L4 · Anaconda, MT · Accident · 1 fatal · Class 3 · Field · Final report · Apr 26, 2024 · N988B · Destroyed
  > A total loss of engine power due to a loss of cooling oil to the turbine-to-compressor coupling shaft and subsequent fracture of the shaft at an altitude too low for the pilot to complete a successful autorotation. Contributing to the accident was carbon…
- [NTSB ANC24FA029](https://openairdocs.org/ntsb/ANC24FA029.md): Douglas C54D · Fairbanks, AK · Accident · 2 fatal · Class 3 · Field · Final report · Apr 23, 2024 · N3054V · Destroyed
  > A loss of power of the No. 1 engine for reasons that could not be determined, and the incorrect installation of a B-nut fitting in the propeller feathering system, which allowed engine oil to spray onto the exhaust system when the propeller was feathered…
- [NTSB WPR24LA127](https://openairdocs.org/ntsb/WPR24LA127.md): Schleicher Alexander ASH 26 E · Heber, UT · Accident · No injuries · Class 3 · Limited · Final report · Apr 21, 2024 · N644CC · Substantial damage
  > Reduced takeoff performance for reasons that could not be determined, which resulted in a forced landing.
- [NTSB ERA24LA169](https://openairdocs.org/ntsb/ERA24LA169.md): Snyder Robert L Challenger II · Hendersonville, NC · Accident · No injuries · Class 4 · Limited · Final report · Apr 7, 2024 · N381RS · Substantial damage
  > A loss of engine power for undetermined reasons.
- [NTSB ERA24LA166](https://openairdocs.org/ntsb/ERA24LA166.md): Robinson Helicopter R44 · Key Biscayne, FL · Accident · Serious injuries · Class 3 · Limited · Final report · Apr 6, 2024 · N234ZT · Substantial damage
  > A loss of engine power for reasons that could not be determined.
- [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 CEN24LA146](https://openairdocs.org/ntsb/CEN24LA146.md): Schweizer G-164B · Kaplan, LA · Accident · No injuries · Class 3 · Limited · Final report · Apr 2, 2024 · N75099 · Substantial damage
  > A partial loss of engine power for reasons that could not be determined.
- [NTSB ERA24LA161](https://openairdocs.org/ntsb/ERA24LA161.md): Navion Navion B · Sanford, FL · Accident · No injuries · Class 3 · Limited · Final report · Mar 29, 2024 · N5429K · Substantial damage
  > A sudden loss of all engine power during takeoff for undetermined reasons.

Next page: https://openairdocs.org/ntsb-events/000/sequence.md?status=final&page=2

## 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."completionStatus" = 'Completed'
  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?status=final

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