# 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 12 of 35 · 1,709 cases

## Cases, newest first

- [NTSB ERA23FA357](https://openairdocs.org/ntsb/ERA23FA357.md): Robinson Helicopter R22 Beta · Kingston, NJ · Accident · 1 fatal · Class 3 · Field · Final report · Aug 31, 2023 · N2356M · Substantial damage
  > A loss of control, which resulted in the main rotor blade severing the tail boom, for reasons that could not be determined.
- [NTSB CEN23FA391](https://openairdocs.org/ntsb/CEN23FA391.md): Schleicher Alexander ASH 26 E · Wellington, CO · Accident · 1 fatal · Class 3 · Field · Final report · Aug 31, 2023 · N50FU · Substantial damage
  > The pilot’s loss of glider control during approach for reasons that could not be determined, which resulted in an aerodynamic stall at an altitude too low for recovery.
- [NTSB CEN23LA388](https://openairdocs.org/ntsb/CEN23LA388.md): Cessna 210B · Wichita, KS · Accident · Minor injuries · Class 3 · Limited · Final report · Aug 30, 2023 · N9663X · Substantial damage
  > Loss of engine power for reasons that could not be determined.
- [NTSB ERA23LA351](https://openairdocs.org/ntsb/ERA23LA351.md): Nanchang China CJ-6A · Merrickville, NY · Accident · Serious injuries · Class 3 · Limited · Final report · Aug 26, 2023 · N114DZ · Substantial damage
  > A total loss of engine power while enroute for reasons that could not be determined.
- [NTSB ANC23LA070](https://openairdocs.org/ntsb/ANC23LA070.md): Oliver Robert K Oliver Series 6 · Big Delta, AK · Accident · Minor injuries · Class 3 · Limited · Final report · Aug 25, 2023 · N151RF · Substantial damage
  > A partial loss of engine power for undetermined reasons.
- [NTSB ERA23LA349](https://openairdocs.org/ntsb/ERA23LA349.md): Cessna A185F · Leonardtown, MD · Accident · No injuries · Class 3 · Limited · Final report · Aug 24, 2023 · N955LS · Substantial damage
  > A loss of engine power during an approach to landing for undetermined reasons.
- [NTSB GAA23WA245](https://openairdocs.org/ntsb/GAA23WA245.md): Supermarine Spitfire MK26 · Enstone-, United Kingdom · Accident · 1 fatal · Class 5 · Foreign · Aug 22, 2023 · G-CLHJ · Destroyed
- [NTSB ERA23FA346](https://openairdocs.org/ntsb/ERA23FA346.md): Beech C-99 · Litchfield, ME · Accident · 2 fatal · Class 3 · Field · Final report · Aug 22, 2023 · N55RP · Destroyed
  > A horizontal stabilizer pitch trim anomaly that was not identified in the available evidence.
- [NTSB CEN23LA403](https://openairdocs.org/ntsb/CEN23LA403.md): Israel Aircraft Industries 1125 Westwind Astra · Wheeling, IL · Accident · No injuries · Class 3 · Limited · Final report · Aug 21, 2023 · N39TT · Substantial damage
  > A loss of braking effectiveness during landing for reasons that could not be determined, which resulted in a runway excursion.
- [NTSB ERA23LA344](https://openairdocs.org/ntsb/ERA23LA344.md): Mooney M20K · Fostoria, OH · Accident · No injuries · Class 3 · Limited · Final report · Aug 20, 2023 · N1152K · Substantial damage
  > A loss of engine power for unknown reasons.
- [NTSB CEN23LA372](https://openairdocs.org/ntsb/CEN23LA372.md): Pietenpol Aircamper · Hanover, IL · Accident · No injuries · Class 3 · Limited · Final report · Aug 20, 2023 · N929DH · Substantial damage
  > The pilot’s exceedance of the airplane’s critical angle of attack, which resulted in an aerodynamic stall during an attempted forced landing at low altitude. Contributing to the accident was the loss of engine power for undetermined reasons.
- [NTSB GAA23WA239](https://openairdocs.org/ntsb/GAA23WA239.md): Cessna 402 · Bahamas · Accident · Class 3 · Foreign · Aug 19, 2023 · C6-SPK · Destroyed
- [NTSB ERA23LA354](https://openairdocs.org/ntsb/ERA23LA354.md): Piper PA-32-300 · Fishers Island, NY · Accident · No injuries · Class 3 · Limited · Final report · Aug 18, 2023 · N405WB · Substantial damage
  > The loss of engine power for reasons that could not be determined. Contributing was the pilot’s misjudgment of airspeed and altitude during the forced landing.
- [NTSB CEN23LA376](https://openairdocs.org/ntsb/CEN23LA376.md): Sixchuter Spirit XL · Hovland, MN · Accident · 1 fatal · Class 4 · Limited · Final report · Aug 18, 2023 · N538DR · Destroyed
  > The collision with the lake by a noncertificated pilot for reasons that could not be determined.
- [NTSB ERA23LA359](https://openairdocs.org/ntsb/ERA23LA359.md): Aero Commander 500 S · Key West, FL · Accident · No injuries · Class 4 · Limited · Final report · Aug 13, 2023 · N62WE · Substantial damage
  > A total loss of engine power for reasons that could not be determined.
- [NTSB CEN23FA361](https://openairdocs.org/ntsb/CEN23FA361.md): Mikoyan Gurevich MIG-23UB · Belleville, MI · Accident · Serious injuries · Class 3 · Field · Final report · Aug 13, 2023 · N23UB · Destroyed
  > A reported partial loss of engine power while maneuvering for reasons that could not be determined.
- [NTSB ANC23FA061](https://openairdocs.org/ntsb/ANC23FA061.md): Piper PA-18-150 · Skwentna, AK · Accident · 2 fatal · Class 3 · Field · Final report · Aug 9, 2023 · N4481Z · Destroyed
  > An impact with terrain for reasons that could not be determined because the airplane was not recovered due to the inaccessible nature of the accident site.
- [NTSB CEN23LA351](https://openairdocs.org/ntsb/CEN23LA351.md): Taylorcraft F21 · Holliday, TX · Accident · No injuries · Class 3 · Limited · Final report · Aug 7, 2023 · N2005J · Substantial damage
  > A loss of engine power for reasons that could not be determined, which resulted in impact with terrain.
- [NTSB WPR23LA304](https://openairdocs.org/ntsb/WPR23LA304.md): Van Grouw R / Cantrell L White Lightning · Las Vegas, NM · Accident · Minor injuries · Class 3 · Limited · Final report · Aug 6, 2023 · N25WL · Substantial damage
  > A reported partial loss of engine power during cruise flight for undetermined reasons.
- [NTSB CEN23FA340](https://openairdocs.org/ntsb/CEN23FA340.md): Richards Heavylift Helo UH-1H · Oakdale, IL · Accident · 1 fatal · Class 3 · Field · Final report · Jul 31, 2023 · N567VF · Substantial damage
  > An in-flight loss of control for undetermined reasons.
- [NTSB GAA23WA227](https://openairdocs.org/ntsb/GAA23WA227.md): Cessna 177 · Frejus (in water), France · Accident · No injuries · Class 5 · Foreign · Jul 30, 2023 · F-HKLA · Destroyed
- [NTSB CEN23LA337](https://openairdocs.org/ntsb/CEN23LA337.md): Cub Crafters CCX-2000 · Winsted, MN · Accident · No injuries · Class 3 · Limited · Final report · Jul 30, 2023 · N967DT · Substantial damage
  > A total loss of engine power on approach for undetermined reasons.
- [NTSB GAA23WA231](https://openairdocs.org/ntsb/GAA23WA231.md): Hawker Beechcraft G58 · Vilhena, Brazil · Accident · 2 fatal · Class 5 · Foreign · Jul 29, 2023 · PR-ITE · Substantial damage
- [NTSB WPR23FA286](https://openairdocs.org/ntsb/WPR23FA286.md): Risen 915 iS · Glendive, MT · Accident · 1 fatal · Class 3 · Field · Final report · Jul 28, 2023 · N2442 · Destroyed
  > The pilot’s failure to maintain airspeed, which resulted in an exceedance of the airplane’s critical angle of attack and an aerodynamic stall/spin.
- [NTSB GAA23WA230](https://openairdocs.org/ntsb/GAA23WA230.md): Cessna 172 · Trujillo, Peru · Accident · 2 fatal · Class 5 · Foreign · Jul 28, 2023 · OB-1334 · Destroyed
- [NTSB GAA23WA221](https://openairdocs.org/ntsb/GAA23WA221.md): Cessna 150 · Alexandria, Canada · Accident · Class 5 · Foreign · Jul 26, 2023 · C-GFFG · Substantial damage
- [NTSB ERA23LA309](https://openairdocs.org/ntsb/ERA23LA309.md): Bell 206-L4 · Caldwell, OH · Accident · Serious injuries · Class 3 · Limited · Final report · Jul 23, 2023 · N482TJ · Substantial damage
  > The helicopter’s uncontrolled vertical descent and impact with terrain for reasons that could not be determined.
- [NTSB CEN23LA318](https://openairdocs.org/ntsb/CEN23LA318.md): Beech H35 · Georgetown, TX · Accident · Minor injuries · Class 3 · Limited · Final report · Jul 23, 2023 · N365B · Substantial damage
  > A loss of engine power for reasons that could not be determined.
- [NTSB GAA23WA207](https://openairdocs.org/ntsb/GAA23WA207.md): Cessna 210 · Bradda Head, United Kingdom · Accident · 1 fatal · Class 5 · Foreign · Jul 17, 2023 · G-TOTN · Substantial damage
- [NTSB GAA23WA213](https://openairdocs.org/ntsb/GAA23WA213.md): Cessna FR182 · Ferrara di Monte Baldo, Italy · Accident · 1 fatal · Class 5 · Foreign · Jul 16, 2023 · D-EEMN · Substantial damage
- [NTSB CEN23LA306](https://openairdocs.org/ntsb/CEN23LA306.md): Robinson Helicopter R44 II · Pocahontas, IL · Accident · No injuries · Class 3 · Limited · Final report · Jul 14, 2023 · N62RK · Substantial damage
  > A reported loss of engine power for undetermined reasons.
- [NTSB ANC23LA054](https://openairdocs.org/ntsb/ANC23LA054.md): Dehavilland DHC-2 MK. I(L20A) · Twin Hills, AK · Accident · Serious injuries · Class 3 · Limited · Final report · Jul 13, 2023 · N302BL · Substantial damage
  > The pilot’s loss of control during initial climb for reasons that could not be determined.
- [NTSB CEN23LA297](https://openairdocs.org/ntsb/CEN23LA297.md): Cirrus Design SR22 · Boelus, NE · Accident · Serious injuries · Class 3 · Limited · Final report · Jul 12, 2023 · N151SR · Substantial damage
  > Loss of engine power for reasons that could not be determined.
- [NTSB CEN23LA295](https://openairdocs.org/ntsb/CEN23LA295.md): Bell UH-1H · Woodlawn, IL · Accident · No injuries · Class 3 · Limited · Final report · Jul 11, 2023 · N900VF · Substantial damage
  > The separation of the tail boom from the fuselage for reasons that could not be determined.
- [NTSB WPR23LA264](https://openairdocs.org/ntsb/WPR23LA264.md): Cessna A185F · La Mesa, CA · Accident · Minor injuries · Class 3 · Limited · Final report · Jul 9, 2023 · N1839R · Substantial damage
  > A total loss of engine power for undetermined reasons.
- [NTSB GAA23WA198](https://openairdocs.org/ntsb/GAA23WA198.md): Piper 23 · Thirsk, United Kingdom · Accident · 1 fatal · Class 4 · Foreign · Jul 6, 2023 · G-BKJW · Destroyed
- [NTSB GAA23WA194](https://openairdocs.org/ntsb/GAA23WA194.md): Lancair 360 · Habsheim, France · Accident · 2 fatal · Class 5 · Foreign · Jul 5, 2023 · PH-KER · Destroyed
- [NTSB ERA23LA288](https://openairdocs.org/ntsb/ERA23LA288.md): Steen Skybolt · Aliceville, AL · Accident · No injuries · Class 4 · Limited · Final report · Jul 4, 2023 · N32WM · Substantial damage
  > A partial loss of engine power for reasons that could not be determined as the wreckage was not recovered and could not be examined.
- [NTSB ERA23LA283](https://openairdocs.org/ntsb/ERA23LA283.md): Airborne Edge-X · Coral Gables, FL · Accident · Minor injuries · Class 3 · Limited · Final report · Jul 4, 2023 · N147JL · Substantial damage
  > A partial loss of engine power for reasons that could not be determined.
- [NTSB WPR23LA249](https://openairdocs.org/ntsb/WPR23LA249.md): Piper PA-28-140 · Meeks Bay, CA · Accident · Serious injuries · Class 3 · Limited · Final report · Jul 1, 2023 · N4586R · Substantial damage
  > A loss of engine power for reasons that could not be determined based on the available information.
- [NTSB GAA23WA185](https://openairdocs.org/ntsb/GAA23WA185.md): Mooney M20E · Andrewsfield, United Kingdom · Accident · Class 5 · Foreign · Jun 30, 2023 · N7423V · Substantial damage
- [NTSB GAA23WA217](https://openairdocs.org/ntsb/GAA23WA217.md): GippsAero GA-8 · Ghanzi, Botswana · Accident · 3 fatal · Class 5 · Foreign · Jun 29, 2023 · A2-MBE
- [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 CEN23FA269](https://openairdocs.org/ntsb/CEN23FA269.md): Schweizer G-164B · Beltrami, MN · Accident · 1 fatal · Class 3 · Field · Final report · Jun 27, 2023 · N7503H · Substantial damage
  > A collision with terrain and subsequent nose over for undetermined reasons.
- [NTSB CEN23LA262](https://openairdocs.org/ntsb/CEN23LA262.md): Piper PA23 · Ocean Springs, MS · Accident · No injuries · Class 3 · Limited · Final report · Jun 23, 2023 · N4307P · Substantial damage
  > A total loss of engine power during the initial climb due to fuel starvation for undetermined reasons.
- [NTSB CEN23LA259](https://openairdocs.org/ntsb/CEN23LA259.md): Piper PA-28RT-201T · Baytown, TX · Accident · Minor injuries · Class 3 · Limited · Final report · Jun 23, 2023 · N8446B · Substantial damage
  > The total loss of engine power for undetermined reasons and the subsequent impact with terrain.
- [NTSB GAA23WA173](https://openairdocs.org/ntsb/GAA23WA173.md): Bell 412 · Gom, Mexico · Accident · 2 fatal · Class 5 · Foreign · Jun 21, 2023 · XA-EHI · Substantial damage
- [NTSB GAA23WA172](https://openairdocs.org/ntsb/GAA23WA172.md): Robinson R44 · San Carlos de Boliva-Buenos Aires, Argentina · Accident · No injuries · Class 5 · Foreign · Jun 18, 2023 · LV-KBH · Substantial damage
- [NTSB GAA23WA171](https://openairdocs.org/ntsb/GAA23WA171.md): Reims F · Herten-Rheinfelden, Germany · Accident · No injuries · Class 5 · Foreign · Jun 17, 2023 · D-EGLP · Substantial damage
- [NTSB CEN23LA232](https://openairdocs.org/ntsb/CEN23LA232.md): Grumman Acft ENG Cor-Schweizer G-164B · Bloomfield, NE · Accident · No injuries · Class 3 · Limited · Final report · Jun 7, 2023 · N48485 · Substantial damage
  > A partial loss of engine power during takeoff for reasons that could not be determined.

Next page: https://openairdocs.org/ntsb-events/000/sequence.md?page=13

## 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=12

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