# 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 17 of 35 · 1,709 cases

## Cases, newest first

- [NTSB GAA22WA019](https://openairdocs.org/ntsb/GAA22WA019.md): Cessna 208 · Papua, Papua New Guinea · Accident · 1 fatal · Class 5 · Foreign · Oct 24, 2021 · PK-SNN · Substantial damage
- [NTSB ERA22LA029](https://openairdocs.org/ntsb/ERA22LA029.md): Cessna 172 · Westhampton Beach, NY · Accident · No injuries · Class 3 · Limited · Final report · Oct 23, 2021 · N1188L · Substantial damage
  > A total loss of engine power during cruise flight for reasons that could not be determined based on the available evidence.
- [NTSB CEN22LA012](https://openairdocs.org/ntsb/CEN22LA012.md): Stinson 108 · Wildwood, AR · Accident · Serious injuries · Class 3 · Limited · Final report · Oct 8, 2021 · N677JD · Substantial damage
  > A total loss of engine power for reasons that could not be determined.
- [NTSB GAA22WA010](https://openairdocs.org/ntsb/GAA22WA010.md): Cessna 150 · Rio De Janeiro, Brazil · Accident · No injuries · Class 5 · Foreign · Oct 6, 2021 · PT-KLG · Substantial damage
- [NTSB GAA21WA242](https://openairdocs.org/ntsb/GAA21WA242.md): Mooney M20M · Tököl, Hungary · Accident · Class 5 · Foreign · Sep 28, 2021 · N999U · Substantial damage
- [NTSB ERA21LA384](https://openairdocs.org/ntsb/ERA21LA384.md): Cessna 150 · Hobe Sound, FL · Accident · Serious injuries · Class 3 · Limited · Final report · Sep 28, 2021 · N4100V · Substantial damage
  > A reported loss of engine performance for reasons that could not be determined.
- [NTSB GAA21WA241](https://openairdocs.org/ntsb/GAA21WA241.md): Vans RV8 · Hyvinkää, Finland · Accident · Class 5 · Foreign · Sep 27, 2021 · OH-XRV · Substantial damage
- [NTSB GAA21WA235](https://openairdocs.org/ntsb/GAA21WA235.md): Piper PA18S · Ferme Neuve, Canada · Accident · 2 fatal · Class 5 · Foreign · Sep 24, 2021 · C-FVPZ · Substantial damage
- [NTSB WPR21LA354](https://openairdocs.org/ntsb/WPR21LA354.md): Hiller UH-12E · Bovill, ID · Accident · No injuries · Class 3 · Limited · Final report · Sep 23, 2021 · N5334V · Substantial damage
  > A loss of helicopter control for undetermined reasons based on the available evidence for this accident.
- [NTSB ANC21LA096](https://openairdocs.org/ntsb/ANC21LA096.md): Piper PA-14 · Chickaloon, AK · Accident · Minor injuries · Class 3 · Limited · Final report · Sep 23, 2021 · N4276H · Substantial damage
  > A total loss of engine power during takeoff for reasons that could not be determined based on the available information.
- [NTSB GAA22WA020](https://openairdocs.org/ntsb/GAA22WA020.md): Bely lebed · Sovetsky, Russia · Accident · 2 fatal · Class 5 · Foreign · Sep 16, 2021 · RA-1815G · Substantial damage
- [NTSB GAA21WA231](https://openairdocs.org/ntsb/GAA21WA231.md): Mooney M20J · Sundridge, Canada · Accident · 1 fatal · Class 5 · Foreign · Sep 16, 2021 · C-FLJL
- [NTSB GAA21WA229](https://openairdocs.org/ntsb/GAA21WA229.md): Beech B200GT · Piracicaba, Brazil · Accident · 7 fatal · Class 3 · Foreign · Sep 14, 2021 · PS-CSM · Destroyed
- [NTSB GAA21WA237](https://openairdocs.org/ntsb/GAA21WA237.md): Cessna 182 · Itaituba, Brazil · Accident · 1 fatal · Class 5 · Foreign · Sep 10, 2021 · PT-JIH · Destroyed
- [NTSB GAA21WA224](https://openairdocs.org/ntsb/GAA21WA224.md): Cessna 172S · Ruckinge, Kentu, United Kingdom · Accident · Class 5 · Foreign · Sep 10, 2021 · G-CFIO · Substantial damage
- [NTSB CEN21LA414](https://openairdocs.org/ntsb/CEN21LA414.md): Cessna 172S · LaSalle, CO · Accident · Minor injuries · Class 3 · Limited · Final report · Sep 10, 2021 · N2099J · Substantial damage
  > A loss of engine power for undetermined reasons.
- [NTSB CEN21LA404](https://openairdocs.org/ntsb/CEN21LA404.md): Cessna 182 · Delta, CO · Accident · No injuries · Class 3 · Limited · Final report · Sep 3, 2021 · N9114W · Substantial damage
  > A total loss of engine power that resulted in a forced landing and subsequent noseover. The reason for the total loss of engine power could not be determined based on the available evidence.
- [NTSB CEN21LA405](https://openairdocs.org/ntsb/CEN21LA405.md): Beech A35 · Morrilton, AR · Accident · Minor injuries · Class 3 · Limited · Final report · Sep 2, 2021 · N8419A · Substantial damage
  > The total loss of engine power for reasons that could not be determined based on available information.
- [NTSB WPR21FA330](https://openairdocs.org/ntsb/WPR21FA330.md): Cessna TU206F · Bernard, ID · Accident · 2 fatal · Class 3 · Field · Final report · Aug 28, 2021 · N922MA · Substantial damage
  > The pilot’s decision to continue the flight into a canyon that exceeded the performance capabilities of the airplane, which resulted in an impact with trees an terrain.
- [NTSB CEN21LA390](https://openairdocs.org/ntsb/CEN21LA390.md): Mantooth Thorp T-18 · San Antonio, TX · Accident · Minor injuries · Class 3 · Limited · Final report · Aug 28, 2021 · N78DW · Substantial damage
  > The loss of engine power after takeoff for undetermined reasons.
- [NTSB WPR21LA326](https://openairdocs.org/ntsb/WPR21LA326.md): Piper PA-32-300 · Del Mar, CA · Accident · No injuries · Class 3 · Limited · Final report · Aug 24, 2021 · N2843T · Substantial damage
  > The partial loss of engine power for reasons that could not be determined, which resulted in a forced landing on an interstate highway and subsequent collision with vehicles.
- [NTSB GAA21WA211](https://openairdocs.org/ntsb/GAA21WA211.md): Piper PA24 · Maldonado, Uruguay · Accident · 2 fatal · Class 5 · Foreign · Aug 22, 2021 · LV-CVT
- [NTSB CEN21FA380](https://openairdocs.org/ntsb/CEN21FA380.md): Piper J3C-65 · Adrian, MO · Accident · 1 fatal · Class 3 · Field · Final report · Aug 22, 2021 · N70643 · Substantial damage
  > The pilot’s failure to maintain control of the airplane which resulted in an aerodynamic stall and impact with terrain.
- [NTSB GAA21WA209](https://openairdocs.org/ntsb/GAA21WA209.md): Acroduster II · Marcoola, Australia · Accident · 1 fatal · Class 5 · Foreign · Aug 18, 2021 · VH-YEL · Destroyed
- [NTSB GAA21WA208](https://openairdocs.org/ntsb/GAA21WA208.md): Rockwell 690 · Thunder Bay, Canada · Accident · 1 fatal · Class 5 · Foreign · Aug 17, 2021 · C-GYLD · Destroyed
- [NTSB CEN21LA372](https://openairdocs.org/ntsb/CEN21LA372.md): Flying K Enterprises Sky Raider · Augusta, KS · Accident · Serious injuries · Class 3 · Limited · Final report · Aug 15, 2021 · N56179 · Substantial damage
  > A partial loss of engine power for reasons that could not determined based on available information.
- [NTSB CEN21LA369](https://openairdocs.org/ntsb/CEN21LA369.md): Robinson Helicopter R44 II · Wheeling, IL · Accident · Minor injuries · Class 3 · Limited · Final report · Aug 11, 2021 · N4043B · Substantial damage
  > A partial loss of engine power for reasons that could not be determined based on available information.
- [NTSB ERA21LA322](https://openairdocs.org/ntsb/ERA21LA322.md): Diamond DA42 · Hiddenite, NC · Accident · No injuries · Class 3 · Limited · Final report · Aug 9, 2021 · N906ER · Substantial damage
  > The flight instructor’s inability to stop the descent following a practice emergency descent for reasons that could not be determined.
- [NTSB CEN21LA367](https://openairdocs.org/ntsb/CEN21LA367.md): Pulsar Sport 150 · Osceola, WI · Accident · Minor injuries · Class 3 · Limited · Final report · Aug 9, 2021 · N997EM · Substantial damage
  > The total loss of engine power for undermined reasons based on available information
- [NTSB GAA21WA195](https://openairdocs.org/ntsb/GAA21WA195.md): Tecnam P2002 · Khabarovsk, Russia · Accident · 2 fatal · Class 5 · Foreign · Aug 4, 2021 · RA-2329G · Substantial damage
- [NTSB WPR21LA299](https://openairdocs.org/ntsb/WPR21LA299.md): Schweizer G-164B · Tracy, CA · Accident · No injuries · Class 3 · Limited · Final report · Jul 30, 2021 · N3629F · Substantial damage
  > A loss of thrust during a low-level agricultural application flight, which resulted in a descent and impact with terrain. The reason for the loss of thrust could not be determined based on available information.
- [NTSB GAA21WA186](https://openairdocs.org/ntsb/GAA21WA186.md): Cessna 208 · Norderney, Germany · Accident · 1 fatal · Class 5 · Foreign · Jul 26, 2021 · D-FLEC · Substantial damage
- [NTSB CEN21LA473](https://openairdocs.org/ntsb/CEN21LA473.md): Beech 35-A33 · Mineral Wells, TX · Accident · Minor injuries · Class 3 · Limited · Final report · Jul 23, 2021 · N5ML · Substantial damage
  > A partial loss of engine power for reasons that could not be determined based on available evidence.
- [NTSB CEN21LA325](https://openairdocs.org/ntsb/CEN21LA325.md): Beech 35-C33 · Longmont, CO · Accident · Serious injuries · Class 3 · Limited · Final report · Jul 18, 2021 · N18AR · Substantial damage
  > The airplane’s lack of climb performance after takeoff in high density altitude conditions for reasons that could not be determined based on the available evidence.
- [NTSB CEN21FA327](https://openairdocs.org/ntsb/CEN21FA327.md): Luscombe 8F · Comstock, TX · Accident · 1 fatal · Class 3 · Field · Final report · Jul 18, 2021 · N2054B · Destroyed
  > Impact with terrain for reasons that could not be determined based on the available information.
- [NTSB GAA21WA170](https://openairdocs.org/ntsb/GAA21WA170.md): Joplin Tundra · Athens, Canada · Accident · 1 fatal · Class 5 · Foreign · Jul 10, 2021 · C-IJGB · Substantial damage
- [NTSB GAA21WA169](https://openairdocs.org/ntsb/GAA21WA169.md): De Havilland DHC2 · Örebro, Sweden · Accident · 9 fatal · Class 5 · Foreign · Jul 8, 2021 · SE-KKD · Destroyed
- [NTSB CEN21LA307](https://openairdocs.org/ntsb/CEN21LA307.md): Quad City Challenger · Ste. Genevieve, MO · Accident · Serious injuries · Class 4 · Limited · Final report · Jul 5, 2021 · UNREG · Substantial damage
  > An impact with terrain for reasons that could not be determined based on available evidence.
- [NTSB CEN21LA321](https://openairdocs.org/ntsb/CEN21LA321.md): Swann Lynn J Seawind 3000 · Charlevoix, MI · Accident · No injuries · Class 4 · Limited · Final report · Jul 3, 2021 · N8UU · Destroyed
  > The loss of engine power for undetermined reasons based on available evidence.
- [NTSB CEN21LA303](https://openairdocs.org/ntsb/CEN21LA303.md): Aeronca 15AC · Hastings, MI · Accident · No injuries · Class 3 · Limited · Final report · Jun 30, 2021 · N1175H · Substantial damage
  > A total loss of engine power for reasons that could not be determined based on the available information.
- [NTSB ANC21LA047](https://openairdocs.org/ntsb/ANC21LA047.md): Piper J3C-65 · Sterling, AK · Accident · No injuries · Class 3 · Limited · Final report · Jun 28, 2021 · N98109 · Substantial damage
  > A partial loss of engine power for reasons that could not be determined based on the available information.
- [NTSB ENG21WA029](https://openairdocs.org/ntsb/ENG21WA029.md): Boeing 737 · Ciudad de México, Mexico · Incident · Class 5 · Foreign · Jun 27, 2021 · N875AM
- [NTSB ERA21LA267](https://openairdocs.org/ntsb/ERA21LA267.md): Piper PA-28-161 · Easton, MD · Accident · Serious injuries · Class 3 · Limited · Final report · Jun 24, 2021 · N2143G · Destroyed
  > A total loss of engine power for reasons that could not be determined.
- [NTSB CEN21LA288](https://openairdocs.org/ntsb/CEN21LA288.md): Vining SD1 Minisport · Butler, OH · Accident · No injuries · Class 3 · Limited · Final report · Jun 23, 2021 · N72DX · Substantial damage
  > The pilot’s failure to maintain adequate airspeed following a partial loss of engine power, which resulted in an aerodynamic stall and impact with terrain. The reason for the partial loss of engine power could not be determined based on available information.
- [NTSB GAA21WA147](https://openairdocs.org/ntsb/GAA21WA147.md): North American T28 · Jickovice, Czechia · Accident · 2 fatal · Class 5 · Foreign · Jun 20, 2021 · OE-ESA · Substantial damage
- [NTSB CEN21FA270](https://openairdocs.org/ntsb/CEN21FA270.md): Air Tractor 502B · Paragould, AR · Accident · 1 fatal · Class 3 · Field · Final report · Jun 15, 2021 · N6088K · Destroyed
  > An inflight loss of control and subsequent impact with terrain during an aerial application flight for reasons that could not be determined based on the available evidence.
- [NTSB GAA21WA138](https://openairdocs.org/ntsb/GAA21WA138.md): Bell 214 · Nipigon, Canada · Accident · Class 5 · Foreign · Jun 7, 2021 · C-GDYZ · Substantial damage
- [NTSB CEN21LA254](https://openairdocs.org/ntsb/CEN21LA254.md): Air Tractor AT-602 · Drew, MS · Accident · Minor injuries · Class 3 · Limited · Final report · Jun 4, 2021 · N51037 · Substantial damage
  > A loss of control during takeoff for reasons that could not be determined.
- [NTSB CEN21LA257](https://openairdocs.org/ntsb/CEN21LA257.md): Quad City Challenger · Wallingford, IA · Accident · No injuries · Class 3 · Limited · Final report · Jun 2, 2021 · N3281P · Substantial damage
  > Impact with trees and terrain during takeoff for reasons that could not be determined based on the available information.
- [NTSB WPR21LA220](https://openairdocs.org/ntsb/WPR21LA220.md): Piper PA-24 · Paris, ID · Accident · Serious injuries · Class 3 · Limited · Final report · May 29, 2021 · N6334P · Substantial damage
  > A total loss of engine power for reasons that could not be determined.

Next page: https://openairdocs.org/ntsb-events/000/sequence.md?page=18

## 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=17

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