# 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 18 of 35 · 1,709 cases

## Cases, newest first

- [NTSB GAA21WA122](https://openairdocs.org/ntsb/GAA21WA122.md): Cessna F172 · Abzac, France, France · Accident · 1 fatal · Class 5 · Foreign · May 23, 2021 · F-GCNK · Destroyed
- [NTSB GAA21WA117](https://openairdocs.org/ntsb/GAA21WA117.md): Cessna 172 · Guatemela, Guatemala · Accident · Class 5 · Foreign · May 18, 2021 · TG-AER · Substantial damage
- [NTSB GAA21WA120](https://openairdocs.org/ntsb/GAA21WA120.md): Storm Fury RG · Mucia, Spain, Spain · Accident · 1 fatal · Class 5 · Foreign · May 8, 2021 · EC-XSB
- [NTSB GAA21WA114](https://openairdocs.org/ntsb/GAA21WA114.md): Legacy 2000 · Oberramsern, Switzerland · Accident · 2 fatal · Class 5 · Foreign · May 8, 2021 · HB-YMS · Substantial damage
- [NTSB GAA21WA111](https://openairdocs.org/ntsb/GAA21WA111.md): Robinson R44 · Estepona, Spain · Accident · 1 fatal · Class 5 · Foreign · May 7, 2021 · UNK · Destroyed
- [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 GAA21WA088](https://openairdocs.org/ntsb/GAA21WA088.md): Agusta A119 · Nuevo Laredo, Mexico · Accident · 1 fatal · Class 5 · Foreign · Apr 23, 2021 · N119AA · Substantial damage
- [NTSB GAA21WA086](https://openairdocs.org/ntsb/GAA21WA086.md): Sikorsky S76C+ · Oak Cheon Goon, South Korea · Accident · 1 fatal · Class 5 · Foreign · Apr 21, 2021 · HL9285 · Substantial damage
- [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 CEN21LA193](https://openairdocs.org/ntsb/CEN21LA193.md): Piper PA28R · McKinney, TX · Accident · Minor injuries · Class 3 · Limited · Final report · Apr 18, 2021 · N2973R · Substantial damage
  > A total loss of engine power for reasons that could not be determined based on the available information.
- [NTSB GAA21WA064](https://openairdocs.org/ntsb/GAA21WA064.md): Piper PA46 · Iztapa, Guatemala · Accident · Minor injuries · Class 5 · Foreign · Apr 2, 2021 · TG-JAO · Substantial damage
- [NTSB GAA21WA066](https://openairdocs.org/ntsb/GAA21WA066.md): Cessna 150 · Cajeme, Sonora, Mexico · Accident · No injuries · Class 5 · Foreign · Mar 30, 2021 · XB-AUQ · Substantial damage
- [NTSB GAA21WA061](https://openairdocs.org/ntsb/GAA21WA061.md): Cessna T206H · Quintana Roo, Mexico, Mexico · Accident · 2 fatal · Class 5 · Foreign · Mar 30, 2021 · XA-UPC
- [NTSB GAA21WA060](https://openairdocs.org/ntsb/GAA21WA060.md): Cessna 401 · Hermosillo, Mexico, Mexico · Accident · 7 fatal · Class 5 · Foreign · Mar 27, 2021 · XB-HSW
- [NTSB ENG21WA051](https://openairdocs.org/ntsb/ENG21WA051.md): Aerospatiale AS350 · Aoki Village, Japan · Incident · Serious injuries · Class 5 · Foreign · Mar 23, 2021 · JA6050 · Substantial damage
- [NTSB GAA21WA054](https://openairdocs.org/ntsb/GAA21WA054.md): Bell 206 · XIa Men City, China · Accident · 4 fatal · Class 5 · Foreign · Mar 19, 2021 · B-7720
- [NTSB GAA21WA053](https://openairdocs.org/ntsb/GAA21WA053.md): Robinson R44 · Leksand, Sweden · Accident · 1 fatal · Class 4 · Foreign · Mar 17, 2021 · SE-JVF · Destroyed
- [NTSB GAA21WA087](https://openairdocs.org/ntsb/GAA21WA087.md): Bell 212 · Bowen Island, Canada · Accident · Minor injuries · Class 5 · Foreign · Mar 5, 2021 · C-GNYI · Substantial damage
- [NTSB GAA21WA040](https://openairdocs.org/ntsb/GAA21WA040.md): Piper PA-28-161 · Acklin, Bahamas · Accident · 2 fatal · Class 4 · Foreign · Mar 5, 2021 · N2932Y · Destroyed
- [NTSB GAA21WA075](https://openairdocs.org/ntsb/GAA21WA075.md): Cessna 501 · Odesa, Ukraine · Incident · No injuries · Class 5 · Foreign · Mar 3, 2021 · YR-CMO · Minor damage
- [NTSB ANC21LA020](https://openairdocs.org/ntsb/ANC21LA020.md): Robinson Helicopter R66 · Kodiak, AK · Accident · 1 fatal · Class 3 · Limited · Final report · Mar 3, 2021 · N1767 · Destroyed
  > An impact with ocean waters for reasons that could not be determined based on the available information.
- [NTSB GAA21WA037](https://openairdocs.org/ntsb/GAA21WA037.md): Beech B300 · Ji'an City Jiangxi Province, China · Accident · 5 fatal · Class 5 · Foreign · Mar 1, 2021 · B-10GD · Substantial damage
- [NTSB GAA21WA063](https://openairdocs.org/ntsb/GAA21WA063.md): Piper PA25 · Panuco, Veracruz, Mexico · Accident · Class 5 · Foreign · Feb 28, 2021 · XB-JEF
- [NTSB ERA21LA141](https://openairdocs.org/ntsb/ERA21LA141.md): Steinman Mark E Lancair 320 · Atlantic Ocean (Atlantic Ocean) · Accident · 1 fatal · Class 3 · Limited · Final report · Feb 24, 2021 · N670BS · Substantial damage
  > The airplane’s impact with water for reasons that could not be determined.
- [NTSB GAA21WA033](https://openairdocs.org/ntsb/GAA21WA033.md): Aviat A1C-180 · Nanyuki, Kenya · Accident · 2 fatal · Class 5 · Foreign · Feb 11, 2021 · 5Y-KWL · Destroyed
- [NTSB ERA21LA126](https://openairdocs.org/ntsb/ERA21LA126.md): Bell 206 · Pahokee, FL · Accident · No injuries · Class 3 · Limited · Final report · Feb 4, 2021 · N820H · Substantial damage
  > A loss of main rotor rpm for reasons that could not be determined, which resulted in an autorotation and a subsequent hard landing and rollover.
- [NTSB CEN21LA107](https://openairdocs.org/ntsb/CEN21LA107.md): Hawker Beechcraft G58 · Credit, AR · Accident · 2 fatal · Class 3 · Limited · Final report · Jan 4, 2021 · N325GC · Destroyed
  > A loss of left engine power for undetermined reasons, which resulted in an emergency descent with one engine inoperative and inadvertent collision with transmission lines. Contributing to the accident was the pilot’s inability to respond appropriately to the…
- [NTSB ANC21WA009](https://openairdocs.org/ntsb/ANC21WA009.md): Robinson R66 · Ojiro in Shimada-City, Shizuoka, Japan · Accident · 1 fatal · Class 5 · Foreign · Dec 30, 2020 · JA77AR
- [NTSB CEN21LA102](https://openairdocs.org/ntsb/CEN21LA102.md): Hughes 369D · Tuckers Crossing, MS · Accident · 1 fatal · Class 3 · Limited · Final report · Dec 29, 2020 · N103SU · Destroyed
  > The pilot’s loss of helicopter control when the external saw contacted trees during an attempted emergency landing due to a main rotor transmission oil pressure warning. The reason that the pilot did not release the external saw from the helicopter during the…
- [NTSB CEN21LA100](https://openairdocs.org/ntsb/CEN21LA100.md): Walton Daniel J Sonex · Pecatonica, IL · Accident · Serious injuries · Class 3 · Limited · Final report · Dec 24, 2020 · N610DJ · Substantial damage
  > A total loss of engine power for reasons that could not be determined based on the available information, and the pilot’s exceedance of the airplane’s critical angle of attack following the loss of engine power, which resulted in an aerodynamic stall/spin and…
- [NTSB WPR21LA068](https://openairdocs.org/ntsb/WPR21LA068.md): Cirrus Design SR22 · Ogden, UT · Accident · Serious injuries · Class 3 · Limited · Final report · Dec 10, 2020 · N577CP · Substantial damage
  > The partial loss of engine power for reasons that cannot be determined due to lack of available evidence.
- [NTSB WPR21WA065](https://openairdocs.org/ntsb/WPR21WA065.md): Robinson R44 · Tallong, Australia · Accident · 2 fatal · Class 5 · Foreign · Dec 2, 2020 · VH-HGU · Destroyed
- [NTSB WPR21WA062](https://openairdocs.org/ntsb/WPR21WA062.md): Cessna 172 · Katale, Uganda · Accident · 1 fatal · Class 5 · Foreign · Nov 18, 2020 · N7834M · Destroyed
- [NTSB ERA21WA064](https://openairdocs.org/ntsb/ERA21WA064.md): Cessna 188 · Esperanza, Dominican Republic · Accident · Serious injuries · Class 5 · Foreign · Nov 15, 2020 · HI-923 · Substantial damage
- [NTSB CEN21WA063](https://openairdocs.org/ntsb/CEN21WA063.md): Rotorsport UK Cavalon · Avoch, United Kingdom · Accident · 1 fatal · Class 5 · Foreign · Nov 12, 2020 · G-CKYT · Destroyed
- [NTSB CEN21WA056](https://openairdocs.org/ntsb/CEN21WA056.md): Quest Kodiak 100 · Guatemala City, Guatemala · Accident · 2 fatal · Class 5 · Foreign · Nov 8, 2020 · TG-SMT · Destroyed
- [NTSB WPR21WA050](https://openairdocs.org/ntsb/WPR21WA050.md): Cirrus SR22 · Nelspruit, South Africa · Accident · 1 fatal · Class 5 · Foreign · Nov 6, 2020 · ZS-CNM · Substantial damage
- [NTSB WPR21LA032](https://openairdocs.org/ntsb/WPR21LA032.md): Cessna 172 · Billings, MT · Accident · 1 fatal · Class 3 · Limited · Final report · Oct 31, 2020 · N124TW · Substantial damage
  > The pilot’s failure to maintain the proper descent glide path while on final approach for reasons that could not be determined from available evidence.
- [NTSB CEN21LA035](https://openairdocs.org/ntsb/CEN21LA035.md): Piper PA28 · Crystal Beach, TX · Accident · No injuries · Class 3 · Limited · Final report · Oct 26, 2020 · N32458 · Substantial damage
  > The partial loss of engine power for reasons that could not be determined.
- [NTSB CEN21FA024](https://openairdocs.org/ntsb/CEN21FA024.md): Glasair III · Ford Heights, IL · Accident · 1 fatal · Class 3 · Field · Final report · Oct 20, 2020 · N713MJ · Substantial damage
  > The loss of engine power for reasons that could not be determined based on the available evidence.
- [NTSB GAA21WA115](https://openairdocs.org/ntsb/GAA21WA115.md): Robinson R44 · Melili, Kenya · Accident · No injuries · Class 5 · Foreign · Oct 17, 2020 · 5Y-MEP · Substantial damage
- [NTSB CEN21LA018](https://openairdocs.org/ntsb/CEN21LA018.md): Cessna T182 · Houma, LA · Accident · 2 fatal · Class 3 · Limited · Final report · Oct 16, 2020 · N707DA · Substantial damage
  > Impact with terrain for reasons that could not be determined with the available information.
- [NTSB CEN21WA013](https://openairdocs.org/ntsb/CEN21WA013.md): Cessna FRA150 · Troutbeck, United Kingdom · Accident · 1 fatal · Class 5 · Foreign · Oct 11, 2020 · G-CIIR
- [NTSB CEN21LA004](https://openairdocs.org/ntsb/CEN21LA004.md): Piper PA46 · Lake Elmo, MN · Accident · Serious injuries · Class 3 · Limited · Final report · Oct 2, 2020 · N62ZM · Substantial damage
  > A total loss of engine power for reasons that could not be determined.
- [NTSB WPR20LA320](https://openairdocs.org/ntsb/WPR20LA320.md): Great Lakes 2T1A · San Diego, CA · Accident · Serious injuries · Class 3 · Limited · Final report · Sep 24, 2020 · N3617L · Substantial damage
  > A loss of engine power for reasons that could not be determined, which resulted in a hard landing off airport.
- [NTSB GAA20WA149](https://openairdocs.org/ntsb/GAA20WA149.md): Cessna 182 · Minas City, Uruguay · Accident · Class 5 · Foreign · Sep 24, 2020 · CX-AYE
- [NTSB CEN20LA413](https://openairdocs.org/ntsb/CEN20LA413.md): Cosmos Phase 3 · Wayne, OK · Accident · Fatal · Class 3 · Limited · Final report · Sep 19, 2020 · N7024L · Substantial damage
  > A loss of control while taxiing for reasons that could not be determined based on available evidence.
- [NTSB CEN21WA036](https://openairdocs.org/ntsb/CEN21WA036.md): Cessna TU206G · Los Laureles, Mexico · Accident · 2 fatal · Class 5 · Foreign · Sep 16, 2020 · XB-LVT · Destroyed
- [NTSB CEN20LA392](https://openairdocs.org/ntsb/CEN20LA392.md): Cessna 172 · Cottage Grove, MN · Accident · 3 fatal · Class 3 · Limited · Final report · Sep 13, 2020 · N8488L · Destroyed
  > A steep descent and impact with terrain for reasons that could not be determined based on the available information.
- [NTSB WPR20CA298](https://openairdocs.org/ntsb/WPR20CA298.md): Cessna 208 · Whitmore, AZ · Accident · No injuries · Class 4 · Data collection · Final report · Sep 7, 2020 · N186GC · Substantial damage
  > A loss of directional control during landing due to a flat main landing gear tire, which resulted in a lateral runway excursion and impact with terrain.

Next page: https://openairdocs.org/ntsb-events/000/sequence.md?page=19

## 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=18

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