# NTSB investigations: Lycoming 0-235 series, WY

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.

## Latest cases

- [NTSB WPR26LA201](https://openairdocs.org/ntsb/WPR26LA201.md): American AA1 · Cowley, WY · Accident · Minor injuries · Class 4 · Limited · Final report · May 25, 2026 · N6440L · Substantial damage
  > The pilot's improper landing flare and subsequent loss of directional control during landing.
- [NTSB WPR22LA334](https://openairdocs.org/ntsb/WPR22LA334.md): Buxbaum Mark Edward Long EZ · Medicine Bow, WY · Accident · Serious injuries · Class 3 · Limited · Final report · Sep 5, 2022 · N444MR · Substantial damage
  > A partial loss of engine power due to the fatigue fracture of the No. 4 exhaust valve head.
- [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 WPR10CA437](https://openairdocs.org/ntsb/WPR10CA437.md): Holt Herbert L Long EZ · Afton, WY · Accident · No injuries · Data collection · Final report · Aug 29, 2010 · N31939 · Substantial damage
  > The pilot's failure to securely lock the canopy prior to takeoff, which allowed the contents of the cabin to exit the airplane and damage the propeller. Contributing to the severity of the damage was the subsequent fire that ensued.
- [NTSB DEN04LA110](https://openairdocs.org/ntsb/DEN04LA110.md): American AA-1 · Guernsey, WY · Accident · Serious injuries · Limited investigation · Final report · Jul 25, 2004 · N5667L · Destroyed
  > the pilot's inadequate use of carburetor heat which resulted in the formation of carburetor ice and loss of engine power. Factors contributing to the accident were weather conditions conducive for carburetor icing, and a lack of suitable terrain for a forced…
- [NTSB FTW98LA125](https://openairdocs.org/ntsb/FTW98LA125.md): Piper PA-18-105 · Sheridan, WY · Accident · No injuries · Limited investigation · Final report · Feb 6, 1998 · N316T · Substantial damage
  > the pilot's improper use of carburetor heat, which resulted in loss of engine power due to carburetor ice. Factors relating to the accident were: the carburetor icing (weather) condition, and the lack of a suitable area for an emergency landing.
- [NTSB SEA95LA133](https://openairdocs.org/ntsb/SEA95LA133.md): Cessna 152 · Saratoga, WY · Accident · No injuries · Limited investigation · Final report · Jun 26, 1995 · N5460B · Substantial damage
  > The pilot's improper handling of the airplane during landing.
- [NTSB SEA93LA173](https://openairdocs.org/ntsb/SEA93LA173.md): Piper PA-18-150 · Sheridan, WY · Accident · No injuries · Limited investigation · Final report · Aug 10, 1993 · N116BH · Substantial damage
  > The dual student's failure to maintain directional control. A factor contributing to the accident was the instructor's delayed remedial action.
- [NTSB SEA93FA151](https://openairdocs.org/ntsb/SEA93FA151.md): Piper PA-12 · Laramie, WY · Accident · 1 fatal · Field investigation · Final report · Jul 8, 1993 · N3108M · Substantial damage
  > Poor inflight planning and an inadvertent stall.
- [NTSB SEA93LA123](https://openairdocs.org/ntsb/SEA93LA123.md): Cessna 152 · Cheyenne, WY · Accident · No injuries · Limited investigation · Final report · May 27, 1993 · N43LL · Substantial damage
  > The pilot's improper flare and improper recovery from a bounced landing. Factors include strong crosswinds, downdrafts, and an excessive descent rate.
- [NTSB SEA91LA097](https://openairdocs.org/ntsb/SEA91LA097.md): Grumman AA-1B · Douglas, WY · Accident · 1 fatal · Limited investigation · Final report · May 2, 1991 · N1412R · Destroyed
  > An inadvertent stall with inadequate terrain clearance. Factors include flight in mountainous terrain at an altitude where remedial action was not possible.
- [NTSB DEN86FA149](https://openairdocs.org/ntsb/DEN86FA149.md): American AA-1 Yankee · Cheyenne, WY · Accident · Serious injuries · Field investigation · Final report · Jun 4, 1986 · N5935L · Substantial damage
  > During takeoff on a 4,997 foot long rwy, the acft became airborne, settled back onto the rwy and lifted off again just prior to reaching the end of the rwy. After takeoff the plt was not able to maintain flt. The acft impacted on a street, traveled 30 feet,…
- [NTSB DEN85LA213](https://openairdocs.org/ntsb/DEN85LA213.md): Cessna 152 · Riverton, WY · Accident · No injuries · Limited investigation · Final report · Aug 9, 1985 · N4941P · Substantial damage
  > The student plt attempted to land on rwy 17. The wind was reported to be from 010 degs at 13 KTS. The acft touched down halfway down the rwy. The plt attempted to go around but aborted because of the tailwind. The acft ran off the end of the rwy and collided…
- [NTSB DEN84LA111](https://openairdocs.org/ntsb/DEN84LA111.md): Piper PA-12-115 · Riverton, WY · Accident · No injuries · Limited investigation · Final report · Mar 19, 1984 · N4378M · Substantial damage
  > The plt stated that a convair 580 had landed before him. The plt flew a normal glide slope & planned to land on the approach end of the rwy. On short final at 50 ft AGL, the acft suddenly banked 'over 90 degrees' to the left out of control. The acft then hit…
- [NTSB DEN83LA025](https://openairdocs.org/ntsb/DEN83LA025.md): Cessna 152 · Afton, WY · Accident · No injuries · Limited investigation · Final report · Nov 26, 1982 · N24378 · Substantial damage
  > The pilot stated that he touched down on the snow covered runway and the brakes were frozen. The aircraft hit bare pavement and veered to the left. Wheel dropped off edge of runway into a snow bank. The aircraft nosed over. An interview with the pilot…
- [NTSB DEN81FTC27](https://openairdocs.org/ntsb/DEN81FTC27.md): Cessna 152 · Casper, WY · Accident · No injuries · Closed · Sep 19, 1981 · N4941P · Substantial damage
- [NTSB DEN81DTC23](https://openairdocs.org/ntsb/DEN81DTC23.md): Piper PA-12 · Cody, WY · Accident · No injuries · Closed · Aug 19, 1981 · N3622M · Substantial damage
- [NTSB DEN81FTC15](https://openairdocs.org/ntsb/DEN81FTC15.md): Cessna 152 · Gillette, WY · Accident · No injuries · Closed · May 8, 1981 · N6560H · Substantial damage
- [NTSB DEN80FTC21](https://openairdocs.org/ntsb/DEN80FTC21.md): Piper PA-16 · Rock Springs, WY · Accident · No injuries · Closed · Jul 5, 1980 · N5331H · Substantial damage
- [NTSB DEN80FTC07](https://openairdocs.org/ntsb/DEN80FTC07.md): Cessna 152 · Lander, WY · Accident · No injuries · Closed · Feb 16, 1980 · N24272 · Substantial damage
- [NTSB DEN78FTC17](https://openairdocs.org/ntsb/DEN78FTC17.md): Cessna 172 · Alta, WY · Accident · 1 fatal · Closed · Mar 18, 1978 · N25435 · Destroyed
- [NTSB DEN78DTC14](https://openairdocs.org/ntsb/DEN78DTC14.md): Grum Amer AA1A · Laramie, WY · Accident · Minor injuries · Closed · Feb 26, 1978 · N9472L · Substantial damage
- [NTSB DEN78DTC12](https://openairdocs.org/ntsb/DEN78DTC12.md): Cessna 152 · Cheyenne, WY · Accident · No injuries · Closed · Feb 13, 1978 · N25444 · Substantial damage
- [NTSB DEN77FTC23](https://openairdocs.org/ntsb/DEN77FTC23.md): Piper PA16 · Douglas, WY · Accident · Minor injuries · Closed · Aug 4, 1977 · N5639H · Substantial damage
- [NTSB DEN76DTC13](https://openairdocs.org/ntsb/DEN76DTC13.md): Champion 7ECA · Gillette, WY · Accident · No injuries · Closed · Sep 3, 1975 · N1628G · Substantial damage
- [NTSB DEN75DTC18](https://openairdocs.org/ntsb/DEN75DTC18.md): Piper PA-18 · Douglas, WY · Accident · No injuries · Closed · Apr 7, 1975 · N7153K · Substantial damage
- [NTSB DEN74DTC10](https://openairdocs.org/ntsb/DEN74DTC10.md): Piper PA-18 · Rocky Point, WY · Accident · Minor injuries · Closed · Aug 16, 1973 · N7101K · Substantial damage
- [NTSB DEN70DXA10](https://openairdocs.org/ntsb/DEN70DXA10.md): Champion 7ECA · Newcastle, WY · Accident · No injuries · Closed · May 7, 1970 · N9049L · Substantial damage
- [NTSB DEN66D0274](https://openairdocs.org/ntsb/DEN66D0274.md): Piper PA-18 · Seely, WY · Accident · No injuries · Closed · Mar 5, 1966 · N7537K · Substantial damage
- [NTSB UNK64X0922](https://openairdocs.org/ntsb/UNK64X0922.md): Piper PA22 · Lander, WY · Accident · No injuries · Closed · Mar 15, 1964 · N5292Z · Destroyed

## 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."eventStateOrRegion" = 'WY' AND c."eventCountry" = 'USA'
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('41505'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=41505&state=WY

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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.