# 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 8 of 45 · 2,248 cases

## Cases, newest first

- [NTSB CEN20LA336](https://openairdocs.org/ntsb/CEN20LA336.md): Cirrus SR22 · Osage Beach, MO · Accident · 2 fatal · Class 3 · Limited · Final report · Aug 16, 2020 · N949CG · Destroyed
  > An in-flight fire and subsequent loss of airplane control shortly after takeoff. The source of the in-flight fire or the reason for the loss of airplane control could not be determined based on the available information.
- [NTSB ERA20LA285](https://openairdocs.org/ntsb/ERA20LA285.md): Lake LA4 · West Palm Beach, FL · Accident · Serious injuries · Class 3 · Limited · Final report · Aug 14, 2020 · N2994P · Substantial damage
  > An on-ground engine fire, the source of which could not be determined based on the available evidence.
- [NTSB CEN20LA342](https://openairdocs.org/ntsb/CEN20LA342.md): Siebel Auriga · Rockford, IL · Accident · Minor injuries · Class 3 · Limited · Final report · Aug 14, 2020 · N505JS · Substantial damage
  > The total loss of engine power for reasons that could not be determined based on available information.
- [NTSB CEN20LA328](https://openairdocs.org/ntsb/CEN20LA328.md): Bell 206 · Marathon, TX · Accident · 3 fatal · Class 3 · Limited · Final report · Aug 8, 2020 · N284S · Destroyed
  > The in-flight loss of helicopter control for reasons that could not be determined based on the available evidence.
- [NTSB WPR20LA258](https://openairdocs.org/ntsb/WPR20LA258.md): Cessna T210 · Hanna, UT · Accident · Serious injuries · Class 3 · Limited · Final report · Aug 7, 2020 · N761RG · Substantial damage
  > The pilot’s failure to maintain sufficient airspeed after a partial loss of power for undetermined reasons, which resulted in an exceedance of the airplane’s critical angle of attack and an aerodynamic stall from which the pilot could not recover.
- [NTSB ERA20LA272](https://openairdocs.org/ntsb/ERA20LA272.md): Piper PA 30 · Alabaster, AL · Accident · No injuries · Class 3 · Limited · Final report · Aug 2, 2020 · N7750Y · Substantial damage
  > A loss of control and lack of climb performance shortly after takeoff for reasons that could not be determined based on available evidence, resulting in a collision with terrain.
- [NTSB CEN20LA314](https://openairdocs.org/ntsb/CEN20LA314.md): Piper PA28R · Houston, TX · Accident · Serious injuries · Class 3 · Limited · Final report · Jul 28, 2020 · N15302 · Substantial damage
  > The loss of engine power for a reason that could not be determined based on available evidence.
- [NTSB WPR20LA225](https://openairdocs.org/ntsb/WPR20LA225.md): Vans RV 8 · Grimes, CA · Accident · No injuries · Class 3 · Limited · Final report · Jul 17, 2020 · N508CM · Substantial damage
  > A partial loss of engine power for reasons that could not be determined because the airplane was not examined.
- [NTSB ERA20CA252](https://openairdocs.org/ntsb/ERA20CA252.md): Furlong CA-6 · Manville, NJ · Accident · Minor injuries · Class 4 · Data collection · Final report · Jul 14, 2020 · N12LF · Substantial damage
  > A loss of directional control on takeoff for undetermined reasons.
- [NTSB ANC20LA069](https://openairdocs.org/ntsb/ANC20LA069.md): Air Tractor AT802 · Birch Creek, AK · Accident · No injuries · Class 3 · Limited · Final report · Jul 14, 2020 · N80166 · Substantial damage
  > A loss of control for undetermined reasons while on the surface of the water during scoop operations in support of wildland firefighting operations.
- [NTSB CEN20LA266](https://openairdocs.org/ntsb/CEN20LA266.md): Lancair ES-P · Pauls Valley, OK · Accident · Serious injuries · Class 3 · Limited · Final report · Jul 6, 2020 · N444TW · Destroyed
  > The reason for this accident could not be determined based on the available information.
- [NTSB CEN20LA262](https://openairdocs.org/ntsb/CEN20LA262.md): Beech F35 · Ravenna, TX · Accident · Minor injuries · Class 3 · Limited · Final report · Jul 5, 2020 · N4219B · Substantial damage
  > Electrical and engine problems for reasons that could not be determined based on available evidence.
- [NTSB CEN20LA269](https://openairdocs.org/ntsb/CEN20LA269.md): Air Tractor AT 602 · Weldon, AR · Accident · No injuries · Class 3 · Limited · Final report · Jul 3, 2020 · N602NY · Substantial damage
  > The total loss of engine power during cruise flight for reasons that could not be determined based on the available evidence.
- [NTSB WPR20LA201](https://openairdocs.org/ntsb/WPR20LA201.md): Avia Stroitel AC-5M · Bend, OR · Accident · 1 fatal · Class 3 · Limited · Final report · Jun 30, 2020 · N263R · Destroyed
  > A loss of control just after takeoff for reasons that could not be determined based on the available information.
- [NTSB WPR20LA196](https://openairdocs.org/ntsb/WPR20LA196.md): Kostrazewa Andre Sonex Light Sport · Centerville, UT · Accident · 2 fatal · Class 3 · Limited · Final report · Jun 25, 2020 · N620AK · Destroyed
  > The pilot flying’s exceedance of the airplane’s critical angle of attack during an attempted forced landing, which resulted in an aerodynamic stall and impact with terrain. The reason for the attempted forced landing could not be determined.
- [NTSB WPR20LA190](https://openairdocs.org/ntsb/WPR20LA190.md): Schweizer 269C · North Las Vegas, NV · Accident · No injuries · Class 3 · Limited · Final report · Jun 23, 2020 · N202CC · Substantial damage
  > A total loss of engine power for reasons that could not be determined based on the available information.
- [NTSB WPR20LA189](https://openairdocs.org/ntsb/WPR20LA189.md): Aerospatiale SA342J · Minden, NV · Accident · Minor injuries · Class 3 · Limited · Final report · Jun 21, 2020 · N342J · Destroyed
  > The total loss of engine power due to a surge; the reason for the surge could not be determined based on available information. Contributing to the helicopter damage was the total loss of power while the pilot was transitioning through an altitude and…
- [NTSB CEN20LA239](https://openairdocs.org/ntsb/CEN20LA239.md): Cessna 150 · Millersport, OH · Accident · Minor injuries · Class 3 · Limited · Final report · Jun 20, 2020 · N51033 · Destroyed
  > The loss of engine power for reasons that could not be determined based on the available information.
- [NTSB ERA20LA216](https://openairdocs.org/ntsb/ERA20LA216.md): Bell 47G · Atoka, TN · Accident · No injuries · Class 3 · Limited · Final report · Jun 15, 2020 · N473TT · Substantial damage
  > A total loss of engine power due to a blocked fuel line; the reason for the blockage could not be determined based on the available evidence.
- [NTSB CEN20LA228](https://openairdocs.org/ntsb/CEN20LA228.md): Beech 24 · Livingston, TX · Accident · Serious injuries · Class 3 · Limited · Final report · Jun 13, 2020 · N444JR · Substantial damage
  > The total loss of engine power due to the failure of the No. 3 cylinder for reasons that could not be determined based on available evidence.
- [NTSB CEN20LA215](https://openairdocs.org/ntsb/CEN20LA215.md): Mitsubishi MU2B · Sioux Falls, SD · Accident · 1 fatal · Class 3 · Limited · Final report · Jun 7, 2020 · N44MX · Destroyed
  > The pilot’s failure to maintain control of the airplane during takeoff for reasons that could not be determined.
- [NTSB ERA20CA211](https://openairdocs.org/ntsb/ERA20CA211.md): Piper PA22 · Olean, NY · Accident · No injuries · Class 4 · Data collection · Final report · Jun 5, 2020 · N5044Z · Substantial damage
  > A loss of engine power for undetermined reasons.
- [NTSB WPR20LA175](https://openairdocs.org/ntsb/WPR20LA175.md): Grumman G164 · Lincoln, CA · Accident · Minor injuries · Class 3 · Limited · Final report · Jun 4, 2020 · N8486K · Substantial damage
  > The pilot’s loss of directional control on takeoff for undetermined reasons.
- [NTSB ERA20CA201](https://openairdocs.org/ntsb/ERA20CA201.md): Jabiru J250-SP · Gulf Of Mexico · Accident · No injuries · Class 4 · Data collection · Final report · Jun 1, 2020 · N619J · Substantial damage
  > A total loss of engine power due to a fuel leak that could not be identified since the wreckage was not recovered.
- [NTSB ERA20LA194](https://openairdocs.org/ntsb/ERA20LA194.md): Bellanca 8KCAB · Rainbow City, AL · Accident · No injuries · Class 3 · Limited · Final report · May 22, 2020 · N68555 · Substantial damage
  > The partial loss of engine power for reasons that could not be determined based on available evidence.
- [NTSB CEN20LA187](https://openairdocs.org/ntsb/CEN20LA187.md): Bell OH-58A · West Branch, MI · Accident · No injuries · Class 3 · Limited · Final report · May 20, 2020 · N153SA · Substantial damage
  > The pilot's failure to maintain rotor rpm during a precautionary autorotation, which resulted in a hard landing. Contributing to the accident was the airframe vibration for reasons that could not be determined because examination of the helicopter revealed no…
- [NTSB ERA20CA171](https://openairdocs.org/ntsb/ERA20CA171.md): Mooney M20K · Athens, GA · Accident · No injuries · Class 4 · Data collection · Final report · May 3, 2020 · N231DW · Substantial damage
  > The collapse of the left main landing gear for reasons that could not be determined based on the available information.
- [NTSB WPR20LA136](https://openairdocs.org/ntsb/WPR20LA136.md): Cessna 172 · Fresno, CA · Accident · Minor injuries · Class 3 · Limited · Final report · May 2, 2020 · N734NW · Substantial damage
  > The partial loss of engine power for reasons that could not be determined based on available evidence.
- [NTSB ERA20CA168](https://openairdocs.org/ntsb/ERA20CA168.md): Dayton-Wright DH-4 · Bowling Green, KY · Accident · No injuries · Class 4 · Data collection · Final report · May 2, 2020 · N32517 · Substantial damage
  > A primary control (aileron) system anomaly that progressively worsened during a test flight that resulted in a loss of control. The reason for the anomaly was not determined due to impact damage.
- [NTSB WPR20LA131](https://openairdocs.org/ntsb/WPR20LA131.md): Beech 35 · Currie, NV · Accident · 3 fatal · Class 3 · Limited · Final report · Apr 24, 2020 · N8743A · Destroyed
  > The pilot’s failure to maintain airplane control during a forced landing which resulted in a hard landing for reasons that could not be determined based on available evidence.
- [NTSB WPR20LA128](https://openairdocs.org/ntsb/WPR20LA128.md): Piper PA31T · Billings, MT · Accident · 1 fatal · Class 3 · Limited · Final report · Apr 20, 2020 · N926K · Destroyed
  > The degraded airplane performance after takeoff for reasons that could not be determined from available evidence.
- [NTSB CEN20LA149](https://openairdocs.org/ntsb/CEN20LA149.md): Cessna 402 · Kirksville, MO · Accident · No injuries · Class 3 · Limited · Final report · Apr 14, 2020 · N98649 · Substantial damage
  > A loss of engine power after takeoff for undetermined reasons.
- [NTSB CEN20LA145](https://openairdocs.org/ntsb/CEN20LA145.md): Beech 35 · Sidney, IA · Accident · No injuries · Class 3 · Limited · Final report · Apr 10, 2020 · N1258Z · Substantial damage
  > A loss of engine power for reasons that could not be determined.
- [NTSB ERA20LA149](https://openairdocs.org/ntsb/ERA20LA149.md): Pipistrel Italia Sinus 912 LSA · Marathon, FL · Accident · 1 fatal · Class 3 · Limited · Final report · Apr 9, 2020 · N6263R · Destroyed
  > The pilot’s loss of control of the motorized glider, which resulted in an aerodynamic stall and collision with a residential home and postimpact fire. The reason for the loss of control could not be determined due to the condition of the wreckage.
- [NTSB ERA20CA181](https://openairdocs.org/ntsb/ERA20CA181.md): Aerospatiale SA341 · Fort Myers, FL · Accident · No injuries · Class 4 · Data collection · Final report · Apr 9, 2020 · N9334W · Substantial damage
  > A hard landing that occurred at an unknown time and date, which resulted in substantial damage that was identified prior to a subsequent flight.
- [NTSB WPR20LA118](https://openairdocs.org/ntsb/WPR20LA118.md): Kolb Firestar 2 · La Center, WA · Accident · 1 fatal · Class 3 · Limited · Final report · Apr 6, 2020 · N90KL · Substantial damage
  > A loss of control for reasons that could not be determined based on the available information.
- [NTSB CEN20LA134](https://openairdocs.org/ntsb/CEN20LA134.md): Muse P51D · Mesquite, TX · Accident · 1 fatal · Class 3 · Limited · Final report · Mar 29, 2020 · N151JD · Destroyed
  > The pilot’s inadvertent exceedance of the airplane’s critical angle of attack for undetermined reasons, which resulted in an aerodynamic stall, loss of control, and subsequent impact with terrain.
- [NTSB ERA20LA134](https://openairdocs.org/ntsb/ERA20LA134.md): Maule MT-7 · Swansboro, NC · Accident · 2 fatal · Class 3 · Limited · Final report · Mar 24, 2020 · N899ZZ · Destroyed
  > The airplane’s turning descent into water while enroute in night instrument meteorological conditions for reasons that could not be determined.
- [NTSB WPR20LA110](https://openairdocs.org/ntsb/WPR20LA110.md): Piper PA22 · Pinedale, WY · Accident · Serious injuries · Class 3 · Limited · Final report · Mar 16, 2020 · N4837Z · Substantial damage
  > A loss of airplane control during approach for reasons that could not be determined based on available evidence.
- [NTSB WPR20LA109](https://openairdocs.org/ntsb/WPR20LA109.md): Raytheon Hawker 800XP · Scottsdale, AZ · Accident · No injuries · Class 3 · Limited · Final report · Mar 14, 2020 · N100AG · Substantial damage
  > The pilot’s inability to maintain directional control during landing for undetermined reasons, which resulted in a runway excursion.
- [NTSB ERA20LA123](https://openairdocs.org/ntsb/ERA20LA123.md): Mooney M20C · McIntyre, GA · Accident · No injuries · Class 3 · Limited · Final report · Mar 7, 2020 · N9281M · Substantial damage
  > A total loss of engine power for reasons that could not be determined.
- [NTSB WPR20LA101](https://openairdocs.org/ntsb/WPR20LA101.md): Cessna 210 · Needles, CA · Accident · Minor injuries · Class 3 · Limited · Final report · Mar 5, 2020 · N123CE · Substantial damage
  > A loss of engine power for undetermined reasons due to a lack of available evidence.
- [NTSB CEN20LA113](https://openairdocs.org/ntsb/CEN20LA113.md): Bell 206 · Clark, MO · Accident · No injuries · Class 3 · Limited · Final report · Mar 5, 2020 · N32AE · Substantial damage
  > The fatigue failure of the pneumatic line for reasons that could not be determined, which resulted in a loss of engine power and subsequent hard landing.
- [NTSB ERA20CA117](https://openairdocs.org/ntsb/ERA20CA117.md): Piper PA28 · Wilmington, DE · Accident · Serious injuries · Data collection · Final report · Feb 29, 2020 · N228JS · No damage
  > The pilot being struck in the head by the propeller before flight, which resulted in a serious injury.
- [NTSB CEN20FA108](https://openairdocs.org/ntsb/CEN20FA108.md): Cessna 150 · Port Isabel, TX · Accident · 1 fatal · Class 3 · Field · Final report · Feb 29, 2020 · N407WJ · Destroyed
  > The pilot’s loss of control during the initial takeoff climb for reasons that could not be determined based on available evidence.
- [NTSB CEN20FA098](https://openairdocs.org/ntsb/CEN20FA098.md): Innovator Mosquitto · North Manchester, IN · Accident · 1 fatal · Class 3 · Field · Final report · Feb 23, 2020 · N840GS · Substantial damage
  > The pilot’s loss of control for reasons that could not be determined based on the available information.
- [NTSB WPR20FAMS2](https://openairdocs.org/ntsb/WPR20FAMS2.md): Luscombe 8 · Pacific Ocean, OR · Accident · 1 fatal · Class 3 · Missing aircraft · Final report · Feb 12, 2020 · N77875 · Destroyed
  > Undetermined because the airplane and pilot were not located.
- [NTSB WPR20CA080](https://openairdocs.org/ntsb/WPR20CA080.md): Merwin Kitfox · Goodyear, AZ · Accident · No injuries · Class 4 · Data collection · Final report · Jan 25, 2020 · N399A · Substantial damage
  > The tail wheel mechanism detachment for reasons that could not be determined due to the lack of available evidence which resulted in the loss of directional control on landing.
- [NTSB WPR20LA068](https://openairdocs.org/ntsb/WPR20LA068.md): Cessna 172Q · Big Timber, MT · Accident · No injuries · Class 3 · Limited · Final report · Jan 17, 2020 · N96145 · Substantial damage
  > A loss of engine power during climbout for undetermined reasons.
- [NTSB ERA20LA079](https://openairdocs.org/ntsb/ERA20LA079.md): Rans S12 · Titusville, FL · Accident · No injuries · Class 3 · Limited · Final report · Jan 16, 2020 · N73KA · Substantial damage
  > A total loss of engine power for reasons that could not be determined based on available evidence.

Next page: https://openairdocs.org/ntsb-findings/05000000/cases.md?page=9

## 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=8

---
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, except the copies of manufacturers’ service documents, which belong to their rights holders.