# 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 10 of 35 · 1,712 cases

## Cases, newest first

- [NTSB GAA24WA202](https://openairdocs.org/ntsb/GAA24WA202.md): Stearman A75 · Hasselt, Belgium · Accident · 1 fatal · Class 5 · Foreign · Jun 28, 2024 · OO-OUI · Substantial damage
- [NTSB GAA24WA198](https://openairdocs.org/ntsb/GAA24WA198.md): Cessna 310 · Yoro, Honduras · Accident · 1 fatal · Class 5 · Foreign · Jun 27, 2024 · HR-ABB · Substantial damage
- [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 DCA24WA233](https://openairdocs.org/ntsb/DCA24WA233.md): Boeing 737 · not reported, Thailand · Incident · No injuries · Class 5 · Foreign · Jun 22, 2024 · HS-KMB · No damage
- [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 ANC24FA052](https://openairdocs.org/ntsb/ANC24FA052.md): Piper PA-18-150 · Moose Pass, AK · Accident · 2 fatal · Class 3 · Field · Preliminary report · Jun 18, 2024 · N645DT · Substantial damage
  > On June 18, 2024, about 1400 Alaska daylight time, a float-equipped Piper PA-18-150 airplane, N645DT, was substantially damaged when it was involved in an accident near Moose Pass, Alaska. The instructor pilot and the pilot receiving instruction were fatally…
- [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 GAA24WA187](https://openairdocs.org/ntsb/GAA24WA187.md): Robinson R44 · Bilimbai, Russia · Accident · Serious injuries · Class 5 · Foreign · Jun 12, 2024 · RA-07358 · Substantial damage
- [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 ENG24WA039](https://openairdocs.org/ntsb/ENG24WA039.md): Tecnam P-Mentor · San Martin de Valdeiglesias, Spain · Accident · Class 5 · Foreign · May 31, 2024 · EC-OBS · Substantial damage
- [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 GAA24WA182](https://openairdocs.org/ntsb/GAA24WA182.md): Murphy Rebel · Squamish, Canada · Accident · 2 fatal · Class 5 · Foreign · May 25, 2024 · C-FTWO · Destroyed
- [NTSB GAA24WA177](https://openairdocs.org/ntsb/GAA24WA177.md): Cessna 310 · Tegucigalpa, Honduras · Accident · Class 5 · Foreign · May 25, 2024 · HR-ABB · Destroyed
- [NTSB GAA24WA175](https://openairdocs.org/ntsb/GAA24WA175.md): Cessna 182 · Kerestinec, Croatia · Accident · 1 fatal · Class 5 · Foreign · May 25, 2024 · HA-TUB
- [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 ERA24FA219](https://openairdocs.org/ntsb/ERA24FA219.md): M-Squared Breese 2 · Culpeper, VA · Accident · 1 fatal · Class 3 · Field · Preliminary report · May 17, 2024 · N99VY · Substantial damage
  > On May 17, 2024, about 1430 eastern daylight time, an M-Squared Aircraft Inc. Breese 2 airplane, N99VY, was involved in an accident near the Culpeper Regional Airport (CJR), Culpeper, Virginia. The commercial pilot was fatally injured. The airplane was…
- [NTSB GAA24WA171](https://openairdocs.org/ntsb/GAA24WA171.md): Cessna 182 · Macas, Ecuador · Accident · 2 fatal · Class 5 · Foreign · May 16, 2024 · HCCIN · Substantial damage
- [NTSB GAA24WA265](https://openairdocs.org/ntsb/GAA24WA265.md): Piper PA32 · Cookshire-Eaton, Canada · Accident · Serious injuries · Class 5 · Foreign · May 10, 2024 · C-GEEV · Substantial damage
- [NTSB GAA24WA178](https://openairdocs.org/ntsb/GAA24WA178.md): Piper PA28R · Barcarena, Brazil · Accident · 3 fatal · Class 5 · Foreign · May 10, 2024 · PR-GJE · Destroyed
- [NTSB GAA24WA169](https://openairdocs.org/ntsb/GAA24WA169.md): Piper PA25 · Iracema, Brazil · Accident · 1 fatal · Class 5 · Foreign · May 7, 2024 · PR-FAA · Substantial damage
- [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 DCA24WA191](https://openairdocs.org/ntsb/DCA24WA191.md): Airbus A320 · Dublin, Ireland · Incident · No injuries · Class 5 · Foreign · Apr 24, 2024 · EI-DEJ · No damage
- [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 GAA24WA143](https://openairdocs.org/ntsb/GAA24WA143.md): Extra 300 · Tokol, Hungary, Hungary · Accident · 2 fatal · Class 5 · Foreign · Apr 13, 2024 · HA-PET · Destroyed
- [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 GAA24WA134](https://openairdocs.org/ntsb/GAA24WA134.md): Reims Cessna FR172F · Tyrol, Austria · Accident · 1 fatal · Class 5 · Foreign · Mar 30, 2024 · D-EFCC · Substantial damage
- [NTSB GAA24WA159](https://openairdocs.org/ntsb/GAA24WA159.md): Cessna 152 · Tolima, Colombia · Accident · 1 fatal · Class 5 · Foreign · Mar 29, 2024 · HK2328 · Destroyed
- [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.
- [NTSB GAA24WA158](https://openairdocs.org/ntsb/GAA24WA158.md): Piper PA34 · Serra do Japi, Brazil · Accident · 1 fatal · Class 5 · Foreign · Mar 28, 2024 · PT-WLP · Destroyed
- [NTSB GAA24WA136](https://openairdocs.org/ntsb/GAA24WA136.md): Bell 407 · Mwachon, Kenya · Accident · No injuries · Class 5 · Foreign · Mar 9, 2024 · 5Y-PKI · Substantial damage
- [NTSB GAA24WA166](https://openairdocs.org/ntsb/GAA24WA166.md): Bell 407 · Raigad, India · Accident · Class 5 · Foreign · Mar 5, 2024 · VT-MPU · Substantial damage
- [NTSB GAA24WA103](https://openairdocs.org/ntsb/GAA24WA103.md): Sikorsky S92 · Bergen, Norway · Accident · Class 3 · Foreign · Feb 28, 2024 · LN-OIJ
- [NTSB CEN24LA119](https://openairdocs.org/ntsb/CEN24LA119.md): Zenith Stol CH750 · Sextonville, WI · Accident · Serious injuries · Class 3 · Limited · Final report · Feb 23, 2024 · N750WW · Substantial damage
  > A loss of engine power for reasons that could not be determined, followed by a loss of control and subsequent impact with terrain.
- [NTSB GAA24WA101](https://openairdocs.org/ntsb/GAA24WA101.md): Robinson R44 · Goianesia Do Para, Brazil · Accident · 3 fatal · Class 5 · Foreign · Feb 19, 2024 · PR-BLZ · Substantial damage
- [NTSB ENG24WA011](https://openairdocs.org/ntsb/ENG24WA011.md): Blackshape BK160 · Kapar, Malaysia · Accident · 2 fatal · Class 5 · Foreign · Feb 13, 2024 · I-POOC · Destroyed
- [NTSB GAA24WA097](https://openairdocs.org/ntsb/GAA24WA097.md): Airbus Helicopters AS355 · Jawa Barat, Indonesia · Accident · No injuries · Class 5 · Foreign · Feb 12, 2024 · PK-RTM · Substantial damage
- [NTSB GAA24WA086](https://openairdocs.org/ntsb/GAA24WA086.md): Robinson R44 · Lago Ranco, Chile · Accident · 1 fatal · Class 3 · Foreign · Feb 6, 2024 · CC-PHP
- [NTSB CEN24LA107](https://openairdocs.org/ntsb/CEN24LA107.md): Edge 540 · La Porte, TX · Accident · No injuries · Class 3 · Limited · Final report · Feb 3, 2024 · N321JA · Substantial damage
  > A loss of engine power after takeoff for undetermined reasons.
- [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 GAA24WA082](https://openairdocs.org/ntsb/GAA24WA082.md): Cessna 172 · Denholm, Canada · Accident · No injuries · Class 5 · Foreign · Feb 1, 2024 · C-FSSJ · Substantial damage
- [NTSB WPR24LA082](https://openairdocs.org/ntsb/WPR24LA082.md): Piper PA-18A 150 · Eden, OR · Accident · Serious injuries · Class 3 · Limited · Final report · Jan 26, 2024 · N7473D · Substantial damage
  > An impact with terrain for undetermined reasons.

Next page: https://openairdocs.org/ntsb-events/000/sequence.md?page=11

## 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 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?page=10

---
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.