# NTSB investigations: Not determined, general

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 6 of 45 · 2,248 cases

## Cases, newest first

- [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 CEN21LA395](https://openairdocs.org/ntsb/CEN21LA395.md): Klapp Peter A Klapp KR-2S · Wadsworth, OH · Accident · 1 fatal · Class 3 · Limited · Final report · Sep 3, 2021 · N729PK · Destroyed
  > A loss of airplane control for a reason that could not be determined based on available information.
- [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 ERA21LA347](https://openairdocs.org/ntsb/ERA21LA347.md): Quad City Challenger · Geneva, AL · Accident · Minor injuries · Class 3 · Limited · Final report · Sep 1, 2021 · N1225G · Substantial damage
  > A total loss of engine power for reasons that could not be determined.
- [NTSB ERA21LA349](https://openairdocs.org/ntsb/ERA21LA349.md): Piper PA-28-161 · Grant-Valkaria, FL · Accident · Minor injuries · Class 3 · Limited · Final report · Aug 30, 2021 · N864LM · Substantial damage
  > A total loss of engine power for undetermined reasons.
- [NTSB CEN21LA391](https://openairdocs.org/ntsb/CEN21LA391.md): Cessna 320 · Windthorst, TX · Accident · Minor injuries · Class 3 · Limited · Final report · Aug 29, 2021 · N222L · Substantial damage
  > A forced landing due to a loss of engine power on the right engine for a reason that could not be determined based on the available evidence.
- [NTSB ANC21LA094](https://openairdocs.org/ntsb/ANC21LA094.md): Dehavilland DHC-3 · Bettles, AK · Accident · No injuries · Class 3 · Limited · Final report · Aug 21, 2021 · N560TR · Substantial damage
  > The seizure of the engine during flight for undetermined reasons, which led to a total loss of engine power.
- [NTSB ERA21FA333](https://openairdocs.org/ntsb/ERA21FA333.md): Piper PA24 · Wadesboro, NC · Accident · 2 fatal · Class 3 · Field · Final report · Aug 20, 2021 · N8262P · Destroyed
  > A partial loss of engine power during takeoff for reasons that could not be determined. Contributing was the pilot’s loss of airplane control, resulting in an aerodynamic stall and impact with trees and terrain.
- [NTSB CEN21FA376](https://openairdocs.org/ntsb/CEN21FA376.md): Socata TBM 700 · Urbana, OH · Accident · 1 fatal · Class 3 · Field · Final report · Aug 20, 2021 · N700DT · Destroyed
  > The pilot’s failure to arrest the airplane’s left roll and rapid descent for reasons that could not be determined based on the available evidence.
- [NTSB ERA21LA335](https://openairdocs.org/ntsb/ERA21LA335.md): Hummer 260L · Livingston, TN · Accident · No injuries · Class 3 · Limited · Final report · Aug 18, 2021 · N777TC · Substantial damage
  > A total loss of engine power for reasons that could not be determined. Contributing to the accident was the pilot’s operation of the helicopter in a flight regime that would not allow for a successful autorotative landing.
- [NTSB CEN21LA379](https://openairdocs.org/ntsb/CEN21LA379.md): Diamond Aircraft Industries DA-42 · Bellefontaine, OH · Accident · No injuries · Class 3 · Limited · Final report · Aug 17, 2021 · N215BN · Substantial damage
  > The improper position of the right engine’s fuel feed pump bolt, which led to a total loss of power on the right engine, and the left engine's partial loss of engine power for reasons that could not be determined based on the available evidence.
- [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 WPR21LA318](https://openairdocs.org/ntsb/WPR21LA318.md): North American T-28B · Puyallup, WA · Accident · No injuries · Class 3 · Limited · Final report · Aug 12, 2021 · N392W · Substantial damage
  > A nose wheel shimmy during the landing roll for reasons that could not be determined from the available evidence, which led to a loss of directional control.
- [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 WPR21LA324](https://openairdocs.org/ntsb/WPR21LA324.md): Cessna 172 · Athol, ID · Accident · No injuries · Class 4 · Limited · Final report · Aug 7, 2021 · N4110L · Substantial damage
  > The failure of the windshield during spin recovery for reasons that were not determined.
- [NTSB ERA21LA321](https://openairdocs.org/ntsb/ERA21LA321.md): Cubcrafters CC11-160 · Springfield, TN · Accident · No injuries · Class 3 · Limited · Final report · Aug 6, 2021 · N825ME · Substantial damage
  > A loss of engine power for undetermined reasons.
- [NTSB ERA21LA309](https://openairdocs.org/ntsb/ERA21LA309.md): Enstrom 280 · Colchester, VT · Accident · Serious injuries · Class 3 · Limited · Final report · Jul 30, 2021 · N36DK · Destroyed
  > An in-flight fire originating in the engine compartment near the turbocharger from a source that could not be determined, which resulted in a loss of engine power and led to an autorotation and a hard landing.
- [NTSB ERA21FA308](https://openairdocs.org/ntsb/ERA21FA308.md): Ryan Navion · Pensacola, FL · Accident · Serious injuries · Class 3 · Field · Final report · Jul 29, 2021 · N114ST · Substantial damage
  > A partial loss of engine power during the initial climb, which resulted in a forced, off-airport landing and impact with trees and a fence.
- [NTSB WPR21LA294](https://openairdocs.org/ntsb/WPR21LA294.md): Kuykendall Charles Lancair IV · Indian Springs, NV · Accident · No injuries · Class 3 · Limited · Final report · Jul 28, 2021 · N26PD · Destroyed
  > An in-flight fire due to an undetermined electrical malfunction.
- [NTSB WPR21LA292](https://openairdocs.org/ntsb/WPR21LA292.md): Cessna 180K · Mt. Hood, OR · Accident · Minor injuries · Class 3 · Limited · Final report · Jul 24, 2021 · N8884 · Substantial damage
  > The total loss of engine power while in cruise flight for reasons that could not be determined based on available evidence. Contributing to the accident was the presentation of an abandoned airport as available for use in the Federal Aviation Administration…
- [NTSB CEN21LA329](https://openairdocs.org/ntsb/CEN21LA329.md): Grumman Acft ENG Cor-Schweizer G-164B · Amana, IA · Accident · No injuries · Class 3 · Limited · Final report · Jul 19, 2021 · N8422K · Substantial damage
  > The loss of engine power for reasons that could not be determined.
- [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 WPR21LA271](https://openairdocs.org/ntsb/WPR21LA271.md): Vans RV6 · Riverside, CA · Accident · Serious injuries · Class 3 · Limited · Final report · Jul 15, 2021 · N468AC · Substantial damage
  > A total loss of engine power for reasons that could not be determined from available evidence.
- [NTSB ERA21LA288](https://openairdocs.org/ntsb/ERA21LA288.md): Dehavilland Canada DHC-1 Chipmunk X · Lebanon, TN · Accident · Serious injuries · Class 3 · Limited · Final report · Jul 15, 2021 · N47YC · Substantial damage
  > A total loss of engine power during the initial climb for reasons that could not be determined based on the available evidence.
- [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 ERA21LA277](https://openairdocs.org/ntsb/ERA21LA277.md): Vans RV7 · Pottstown, PA · Accident · No injuries · Class 3 · Limited · Final report · Jul 4, 2021 · N654C · Destroyed
  > A total loss of power for reasons that could not be determined based on the available information.
- [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 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 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 WPR21LA303](https://openairdocs.org/ntsb/WPR21LA303.md): Cessna 172S · Yelm, WA · Accident · No injuries · Class 3 · Limited · Final report · Jun 11, 2021 · N513WF · Substantial damage
  > A total loss of engine power for reasons that could not be determined based on the available evidence.
- [NTSB OPS21LA003](https://openairdocs.org/ntsb/OPS21LA003.md): Boeing 737-8H4 · San Diego, CA · Incident · No injuries · Class 3 · Limited · Final report · Jun 11, 2021 · N8674B · 2 aircraft · No damage
  > The blocked go-around radio instruction from the air traffic control tower to the arrival aircraft which resulted in the arrival aircraft continuing the landing approach. This led to a loss of separation between the landing aircraft and the aircraft awaiting…
- [NTSB CEN21LA249](https://openairdocs.org/ntsb/CEN21LA249.md): Piper PA28 · Justin, TX · Accident · Minor injuries · Class 3 · Limited · Final report · Jun 4, 2021 · N8208N · Substantial damage
  > The loss of engine power for undetermined reasons based upon the available information.
- [NTSB WPR21LA213](https://openairdocs.org/ntsb/WPR21LA213.md): Piper PA-22-150 · Cashmere, WA · Accident · No injuries · Class 3 · Limited · Final report · May 31, 2021 · N7159B · Substantial damage
  > A total loss of engine power shortly after 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.
- [NTSB CEN21LA237](https://openairdocs.org/ntsb/CEN21LA237.md): Grumman G164 · Celina, OH · Accident · Serious injuries · Class 3 · Limited · Final report · May 27, 2021 · N8376K · Substantial damage
  > A loss of engine power for undetermined reasons.
- [NTSB CEN21LA244](https://openairdocs.org/ntsb/CEN21LA244.md): Dehavilland DHC-2 MK.I · Oak Island, MN · Accident · Serious injuries · Class 3 · Limited · Final report · May 22, 2021 · N218RD · Minor damage
  > The failure of an O-ring in the landing gear system, which resulted in the inadvertent extension of the main wheel in the amphibious float. Contributing to the accident was the pilot’s decision to depart with a known hydraulic leak in the landing gear system.
- [NTSB ERA21LA201](https://openairdocs.org/ntsb/ERA21LA201.md): Beech A36 · Lakeland, FL · Accident · 1 fatal · Class 3 · Limited · Final report · May 1, 2021 · N125WC · Destroyed
  > The total loss of engine power for reasons that could not be determined based on the available evidence.
- [NTSB ERA21LA213](https://openairdocs.org/ntsb/ERA21LA213.md): Piper PA-28-161 · Okeechobee, FL · Accident · Serious injuries · Class 3 · Limited · Final report · Apr 29, 2021 · N271SG · Substantial damage
  > A total loss of engine power for reasons that could not be determined based on available information.
- [NTSB CEN21LA204](https://openairdocs.org/ntsb/CEN21LA204.md): Piper J3C-65 · Slaughter, LA · Accident · 1 fatal · Class 3 · Limited · Final report · Apr 26, 2021 · N26783 · Substantial damage
  > A total loss of engine power for reasons that could not be determined from the available evidence.
- [NTSB WPR21FA175](https://openairdocs.org/ntsb/WPR21FA175.md): Swearingen SA226-T(B) · Winslow, AZ · Accident · 2 fatal · Class 3 · Field · Final report · Apr 23, 2021 · N59EZ · Destroyed
  > The loss of engine power to the right engine for reasons that could not be determined. Contributing to the accident was the pilot’s failure to maintain control of the airplane.
- [NTSB CEN21FA195](https://openairdocs.org/ntsb/CEN21FA195.md): Cessna 340A · Tatum, TX · Accident · 1 fatal · Class 3 · Field · Final report · Apr 19, 2021 · N801EC · Destroyed
  > The pilot’s loss of airplane control for undetermined reasons.
- [NTSB ERA21LA187](https://openairdocs.org/ntsb/ERA21LA187.md): Cessna 172S · Venice, FL · Accident · No injuries · Class 3 · Limited · Final report · Apr 17, 2021 · N60457 · Substantial damage
  > A total loss of engine power for reasons that could not be determined based on the available information.
- [NTSB ANC21LA031](https://openairdocs.org/ntsb/ANC21LA031.md): Cessna A185F · Anchorage, AK · Accident · No injuries · Class 4 · Limited · Final report · Apr 15, 2021 · N714JE · Substantial damage
  > A loss of control during landing for reasons that could not be determined based on the available evidence.
- [NTSB WPR21LA156](https://openairdocs.org/ntsb/WPR21LA156.md): Cessna 182H · Blakely Island, WA · Accident · No injuries · Class 3 · Limited · Final report · Apr 11, 2021 · N2030X · Substantial damage
  > A total loss of engine power during climb for reasons that could not be determined which resulted in a forced water landing.
- [NTSB WPR21LA164](https://openairdocs.org/ntsb/WPR21LA164.md): Cessna 208B · Fairbanks, AK · Accident · No injuries · Class 3 · Limited · Final report · Apr 3, 2021 · N215MC · Substantial damage
  > A partial loss of engine power for reasons that could not be determined based on available evidence.
- [NTSB CEN21LA176](https://openairdocs.org/ntsb/CEN21LA176.md): Beech B35 · Pearland, TX · Accident · No injuries · Class 3 · Limited · Final report · Apr 3, 2021 · N5240C · Substantial damage
  > The partial loss of engine power due to a crack in the No. 1 cylinder for unknown reasons.
- [NTSB ERA21LA166](https://openairdocs.org/ntsb/ERA21LA166.md): Jabiru USA Sport J250-SP · Fort Pierce, FL · Accident · Serious injuries · Class 3 · Limited · Final report · Mar 30, 2021 · N236X · Substantial damage
  > A total loss of engine power for reasons that could not be determined based on available information.
- [NTSB ANC21FA028](https://openairdocs.org/ntsb/ANC21FA028.md): Piper PA-18A · Anchorage, AK · Accident · Minor injuries · Class 3 · Field · Final report · Mar 29, 2021 · N1968P · Substantial damage
  > A total loss of engine power for reasons that could not be determined based on the available evidence.

Next page: https://openairdocs.org/ntsb-findings/05000000/cases.md?page=7

## 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 f.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_findings.parquet' f WHERE starts_with(f."findingCode", '05000000'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-findings/05000000/cases?page=6

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