# NTSB investigations: Lycoming 0-540 series, MT

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 WPR26LA157](https://openairdocs.org/ntsb/WPR26LA157.md): Cessna T182 · Marion, MT · Accident · No injuries · Class 3 · Limited · Preliminary report · Apr 8, 2026 · N5475N · Substantial damage
  > On April 8, 2026, about 1315 mountain standard time, a Cessna T182, N5475N, was substantially damaged when it was involved in an accident near Marion, Montana. Both pilots were uninjured. The airplane was operated as a Title 14 Code of Federal Regulations…
- [NTSB WPR25LA295](https://openairdocs.org/ntsb/WPR25LA295.md): Siai-Marchetti SF260B · Billings, MT · Accident · No injuries · Class 3 · Limited · Preliminary report · Sep 26, 2025 · N272C · Substantial damage
  > On September 26, 2025, about 1040 mountain daylight time, a SIAI-MARCHETTI SF 260B, N272C, was substantially damaged when it was involved in an accident near Billings, Montana. The pilot and passenger were not injured. The airplane was operated as a Title 14…
- [NTSB WPR22LA262](https://openairdocs.org/ntsb/WPR22LA262.md): Maule M-5-235C · Three Forks, MT · Accident · No injuries · Class 3 · Limited · Final report · Jul 20, 2022 · N6224M · Substantial damage
  > A loss of engine power due to degraded and incorrectly maintained ignition system components. Contributing to the accident was the pilot’s delay in turning the airplane towards the runway when the engine began to lose power.
- [NTSB WPR20FA063](https://openairdocs.org/ntsb/WPR20FA063.md): Cessna TR182 · Billings, MT · Accident · 4 fatal · Class 3 · Field · Final report · Jan 12, 2020 · N736YU · Destroyed
  > The pilot’s failure to maintain clearance due to poor decision making in selecting an unsafe altitude during cruise flight.
- [NTSB GAA16CA285](https://openairdocs.org/ntsb/GAA16CA285.md): Maule M5 · Hamilton, MT · Accident · No injuries · Data collection · Final report · Jun 5, 2016 · N5635M · Substantial damage
  > The pilot's failure to maintain directional control during the landing roll, which resulted in a runway excursion and a nose over.
- [NTSB LAX08LA284](https://openairdocs.org/ntsb/LAX08LA284.md): Cessna TR182 · Spotted Bear, MT · Accident · No injuries · Limited investigation · Final report · Aug 28, 2008 · N5523T · Substantial damage
  > The pilot's inadequate compensation for the variable wind conditions and failure to maintain adequate airspeed during landing.
- [NTSB SEA06LA052](https://openairdocs.org/ntsb/SEA06LA052.md): Robinson R44 · Helena, MT · Accident · 1 fatal · Limited investigation · Final report · Feb 6, 2006 · N7085U · Destroyed
  > The pilot's intentional suicide. The unauthorized use of a helicopter and impairment by alcohol were factors.
- [NTSB SEA05CA117](https://openairdocs.org/ntsb/SEA05CA117.md): Piper PA-25-260 · Geraldine, MT · Accident · Minor injuries · Data collection · Final report · Jun 12, 2005 · N4768Y · Substantial damage
  > The pilot's failure to maintain clearance with rising terrain. Rising terrain was a factor.
- [NTSB SEA04LA118](https://openairdocs.org/ntsb/SEA04LA118.md): Maule M-7-235C · Miles City, MT · Accident · No injuries · Limited investigation · Final report · Jun 25, 2004 · N1936P · Substantial damage
  > The pilot's failure to maintain directional control of the aircraft during the landing roll resulting in a main landing gear collapse.
- [NTSB SEA01LA148](https://openairdocs.org/ntsb/SEA01LA148.md): Piper PA-24-250 · Thompson Falls, MT · Accident · No injuries · Limited investigation · Final report · Aug 9, 2001 · N699WL · Substantial damage
  > The pilot's inadequate compensation in gusting wind conditions during the landing flare. A tree was a factor.
- [NTSB SEA00LA003](https://openairdocs.org/ntsb/SEA00LA003.md): Maule M-5-235C · Laurel, MT · Accident · No injuries · Limited investigation · Final report · Oct 21, 1999 · N6147M · Substantial damage
  > The pilot's inadequate compensation for wind conditions. Factors include a dust devil/whirlwind at the location where the pilot was trying to land.
- [NTSB SEA00LA006](https://openairdocs.org/ntsb/SEA00LA006.md): Piper PA-24-250 · Bozeman, MT · Accident · Minor injuries · Limited investigation · Final report · Oct 20, 1999 · N8078P · Substantial damage
  > The pilot-in-command's (CFI) failure to take remedial action. Factors include the private pilot letting the airspeed get too low.
- [NTSB SEA99LA083](https://openairdocs.org/ntsb/SEA99LA083.md): Piper PA-24-250 · Plentywood, MT · Accident · No injuries · Limited investigation · Final report · Jun 9, 1999 · N5309P · Substantial damage
  > The pilot's failure to ensure that the landing gear were properly down and locked for landing.
- [NTSB SEA97LA100](https://openairdocs.org/ntsb/SEA97LA100.md): Cessna TR182RG · Ennis, MT · Accident · No injuries · Limited investigation · Final report · May 6, 1997 · N9480R · Substantial damage
  > The pilot's failure to adequately compensate for the wind conditions. Factors contributing to the accident were the gusting winds, and the presence of a ditch on the edge of the landing area.
- [NTSB SEA95LA086](https://openairdocs.org/ntsb/SEA95LA086.md): Piper PA-24-250 · Anaconda, MT · Accident · No injuries · Limited investigation · Final report · May 1, 1995 · N6288P · Substantial damage
  > The pilot's attempt to conduct visual flight into instrument meteorological conditions, and his failure to maintain clearance from terrain.
- [NTSB SEA92LA017](https://openairdocs.org/ntsb/SEA92LA017.md): Piper PA-24-250 · Belt, MT · Accident · No injuries · Limited investigation · Final report · Nov 14, 1991 · N6072P · Substantial damage
  > A blocked fuel vent and an inadequate preflight inspection, which resulted in fuel starvation.
- [NTSB DEN86LA183](https://openairdocs.org/ntsb/DEN86LA183.md): Piper PA-25-235 · Bynum, MT · Accident · No injuries · Limited investigation · Final report · Jul 2, 1986 · N7099Z · Substantial damage
  > After the first landing on a gravel road for reloading liquid insecticide the pilot attempted to take off for an aerial application flight. During the take off ground roll the pilot observed that the left door was not properly closed. He momentarily reduced…
- [NTSB DEN86LA154](https://openairdocs.org/ntsb/DEN86LA154.md): Piper PA-25-260 · Harve, MT · Accident · No injuries · Limited investigation · Final report · Jun 6, 1986 · N4768Y · Substantial damage
  > According to the plt, shortly after takeoff the eng lost partial pwr as a result of carb ice, & a forced landing was made.
- [NTSB DEN83LA034](https://openairdocs.org/ntsb/DEN83LA034.md): Cessna TR182 · Billings, MT · Accident · No injuries · Limited investigation · Final report · Dec 17, 1982 · N756AX · Substantial damage
  > After power failure pilot landed on a highway and collided with an auto. No evidence of fuel was found in the aircraft.
- [NTSB DEN82FTA10](https://openairdocs.org/ntsb/DEN82FTA10.md): Piper PA-25-235 · Glendive, MT · Accident · Serious injuries · Final report · Jun 1, 1982 · N4589Y · Destroyed
  > The pilot reported that he had just loaded the sprayer and had made one pass downhill. At the end of the field, he started a left turn to make an uphill pass. The pilot stated that he got into bad air or down slope air and started to dump the chemical but it…
- [NTSB DEN80FTA18](https://openairdocs.org/ntsb/DEN80FTA18.md): Piper PA-25 · Sidney, MT · Accident · Serious injuries · Closed · Aug 7, 1980 · N7375Z · Substantial damage
- [NTSB SEA79DTI13](https://openairdocs.org/ntsb/SEA79DTI13.md): Piper PA-24 · Sula, MT · Accident · Serious injuries · Closed · Apr 20, 1979 · N8372P · Destroyed
- [NTSB SEA78FTI18](https://openairdocs.org/ntsb/SEA78FTI18.md): Maule M5235C · Havre, MT · Accident · No injuries · Closed · May 24, 1978 · N381X · Substantial damage
- [NTSB SEA77FTA18](https://openairdocs.org/ntsb/SEA77FTA18.md): Piper PA-25 · Brockway, MT · Accident · No injuries · Closed · May 21, 1977 · N7312Z · Substantial damage
- [NTSB SEA76DTI29](https://openairdocs.org/ntsb/SEA76DTI29.md): Callair A-9 · Pendroy, MT · Accident · No injuries · Closed · Jul 6, 1976 · N9667Z · Substantial damage
- [NTSB SEA76FTA25](https://openairdocs.org/ntsb/SEA76FTA25.md): Piper PA-25 · Forsyth, MT · Accident · No injuries · Closed · Jun 9, 1976 · N7611Z · Substantial damage
- [NTSB SEA76FTI22](https://openairdocs.org/ntsb/SEA76FTI22.md): Piper PA-24 · Thompson Falls, MT · Accident · Minor injuries · Closed · Mar 26, 1976 · N5482P · Substantial damage
- [NTSB SEA76FTI20](https://openairdocs.org/ntsb/SEA76FTI20.md): Piper PA-28 · Helena, MT · Accident · No injuries · Closed · Jan 30, 1976 · N33735 · Substantial damage
- [NTSB SEA75FTI28](https://openairdocs.org/ntsb/SEA75FTI28.md): Piper PA-24 · Boseman, MT · Accident · No injuries · Closed · May 1, 1975 · N7487P · Substantial damage
- [NTSB SEA75FTA10](https://openairdocs.org/ntsb/SEA75FTA10.md): Callair A-9 · Glendive, MT · Accident · Serious injuries · Closed · Oct 9, 1974 · N9650Z · Substantial damage
- [NTSB SEA75FTA07](https://openairdocs.org/ntsb/SEA75FTA07.md): Callair A-9 · Pryor, MT · Accident · No injuries · Closed · Sep 3, 1974 · N3566G · Substantial damage
- [NTSB SEA74FTA27](https://openairdocs.org/ntsb/SEA74FTA27.md): Piper PA-25 · Broadview, MT · Accident · No injuries · Closed · Jun 7, 1974 · N7051Z · Substantial damage
- [NTSB SEA72DTA14](https://openairdocs.org/ntsb/SEA72DTA14.md): Piper PA-25 · Brusett, MT · Accident · Minor injuries · Closed · Mar 22, 1972 · N7312Z · Substantial damage
- [NTSB SEA72FTA02](https://openairdocs.org/ntsb/SEA72FTA02.md): Callair A-9 · Laurel, MT · Accident · No injuries · Closed · Jul 19, 1971 · N8264H · Substantial damage
- [NTSB SEA71FTA23](https://openairdocs.org/ntsb/SEA71FTA23.md): Callair A-9 · Opheim, MT · Accident · No injuries · Closed · Jun 20, 1971 · N9650Z · Substantial damage
- [NTSB SEA70FDA12](https://openairdocs.org/ntsb/SEA70FDA12.md): Callair A-9 · Moore, MT · Accident · No injuries · Closed · Jun 7, 1970 · N7230V · Substantial damage
- [NTSB SEA70FDA11](https://openairdocs.org/ntsb/SEA70FDA11.md): Piper PA-25 · Lindsay, MT · Accident · No injuries · Closed · Jun 6, 1970 · N6483Z · Substantial damage
- [NTSB SEA70FDA09](https://openairdocs.org/ntsb/SEA70FDA09.md): Piper PA-28 · Baker, MT · Accident · No injuries · Closed · Jun 1, 1970 · N8641W · Substantial damage
- [NTSB SEA70DDA08](https://openairdocs.org/ntsb/SEA70DDA08.md): Piper PA-25 · Billings, MT · Accident · No injuries · Closed · May 31, 1970 · N4337Y · Substantial damage
- [NTSB SEA69F0250](https://openairdocs.org/ntsb/SEA69F0250.md): Callair A-9 · St.Xavier, MT · Accident · No injuries · Closed · May 5, 1969 · N7223V · Substantial damage
- [NTSB SEA68F0319](https://openairdocs.org/ntsb/SEA68F0319.md): Piper PA-25 · Santa Rita, MT · Accident · No injuries · Closed · May 29, 1968 · N7701Z · Substantial damage
- [NTSB SEA68D0111](https://openairdocs.org/ntsb/SEA68D0111.md): Piper PA-25 · Carter, MT · Accident · Minor injuries · Closed · Aug 11, 1967 · N7668Z · Substantial damage
- [NTSB SEA68F0078](https://openairdocs.org/ntsb/SEA68F0078.md): Piper PA-23 · Billings, MT · Accident · No injuries · Closed · Jun 26, 1967 · N4986P · Substantial damage
- [NTSB SEA68F0040](https://openairdocs.org/ntsb/SEA68F0040.md): Callair A-9 · Dutton, MT · Accident · No injuries · Closed · May 30, 1967 · N8294H · Substantial damage
- [NTSB SEA66F0291](https://openairdocs.org/ntsb/SEA66F0291.md): Piper PA-32 · Anaconda, MT · Accident · No injuries · Closed · May 7, 1966 · N3436W · Substantial damage
- [NTSB SEA66D0161](https://openairdocs.org/ntsb/SEA66D0161.md): Piper PA-28 · Avon, MT · Accident · No injuries · Closed · Nov 1, 1965 · N8782W · Substantial damage
- [NTSB SEA66F0190](https://openairdocs.org/ntsb/SEA66F0190.md): Piper PA-24 · Twin Bridges, MT · Accident · No injuries · Closed · Oct 18, 1965 · N6380 · Substantial damage
- [NTSB UNK64X1546](https://openairdocs.org/ntsb/UNK64X1546.md): Piper PA24 · Billings, MT · Accident · No injuries · Closed · May 1, 1964 · N6203P · Substantial damage
- [NTSB UNK64X0814](https://openairdocs.org/ntsb/UNK64X0814.md): Piper PA24 · Great Falls, MT · Accident · No injuries · Closed · Mar 6, 1964 · N5712P · Substantial damage

## 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" = 'MT' 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 ('41532'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=41532&state=MT

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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.