# NTSB investigations: Lycoming IO-540 series, OR

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 WPR26LA306](https://openairdocs.org/ntsb/WPR26LA306.md): Aero Rampart Steen Skybolt · Roseburg, OR · Accident · No injuries · Class 4 · Limited · Investigation open · Aug 15, 2026 · N32DA · Substantial damage
- [NTSB WPR21LA204](https://openairdocs.org/ntsb/WPR21LA204.md): Mcclure B J Glasair III · Eugene, OR · Accident · Serious injuries · Class 3 · Limited · Final report · May 20, 2021 · N54CB · Destroyed
  > The pilot’s loss of airplane control during the approach to landing due to an asymmetrical flap deployment for reasons that could not be determined based on the available evidence.
- [NTSB WPR21LA362](https://openairdocs.org/ntsb/WPR21LA362.md): Maule MX-7-235 · Ontario, OR · Accident · No injuries · Class 3 · Limited · Final report · Mar 28, 2021 · N235X · Substantial damage
  > A loss of hydraulic fluid and failure of the right brake for reasons that could not be determined due to a lack of available evidence.
- [NTSB WPR19FA178](https://openairdocs.org/ntsb/WPR19FA178.md): Maule M7-235B · Sunriver, OR · Accident · 1 fatal · Class 2 · Field · Final report · Jun 22, 2019 · N118G · Substantial damage
  > A partial loss of engine power due to the separation of baffling in both mufflers. Contributing to the accident was the pilot's failure to retract the landing gear on the float-equipped airplane before performing a forced landing to the river.
- [NTSB GAA19CA007](https://openairdocs.org/ntsb/GAA19CA007.md): Maule M7 · Medford, OR · Accident · No injuries · Data collection · Final report · Oct 6, 2018 · N10555 · Substantial damage
  > The pilot’s failure to maintain directional control during landing.
- [NTSB WPR17LA192](https://openairdocs.org/ntsb/WPR17LA192.md): Maule M 7-235C · Klamath Falls, OR · Accident · No injuries · Limited investigation · Final report · Aug 24, 2017 · N6447M · Substantial damage
  > The pilot's failure to follow the pre-takeoff checklist and the failure of the left main landing gear brake due to a damaged brake master cylinder piston rod, which resulted in a stuck left brake and subsequent loss of control during the landing roll.
- [NTSB WPR17FA185](https://openairdocs.org/ntsb/WPR17FA185.md): Rich Wheeler Express CT · Madras, OR · Accident · 1 fatal · Field investigation · Final report · Aug 19, 2017 · N246TM · Destroyed
  > The pilot's failure to maintain adequate airspeed while maneuvering in the airport traffic pattern for landing, which resulted in an exceedance of the airplane's critical angle of attack, a subsequent aerodynamic stall at an altitude too low to recover.
- [NTSB GAA16CA309](https://openairdocs.org/ntsb/GAA16CA309.md): Maule MX 7 · Ontario, OR · Accident · No injuries · Data collection · Final report · Jun 11, 2016 · N6VD · Substantial damage
  > The pilot's failure to maintain directional control during landing, which resulted the right wing impacting the ground, and nose down.
- [NTSB WPR14FA218](https://openairdocs.org/ntsb/WPR14FA218.md): Nebert Vans RV-10 · Toledo, OR · Accident · 2 fatal · Field investigation · Final report · May 31, 2014 · N62DN · Substantial damage
  > A total loss of engine power due to fuel starvation because of a blocked fuel line that resulted from the pilot’s improper maintenance practices and the pilot’s subsequent failure to maintain adequate airspeed while attempting a forced landing, which led to…
- [NTSB WPR13CA354](https://openairdocs.org/ntsb/WPR13CA354.md): Robinson Helicopter R44 II · The Dalles, OR · Accident · No injuries · Data collection · Final report · Jun 25, 2013 · N74666 · Substantial damage
  > The pilot's failure to see and avoid wires while maneuvering at a low-altitude, which resulted in the main rotor blades striking the wires.
- [NTSB WPR12CA431](https://openairdocs.org/ntsb/WPR12CA431.md): Robinson Helicopter R44 II · McMinnville, OR · Accident · Minor injuries · Data collection · Final report · Sep 20, 2012 · N74744 · Substantial damage
  > The pilot's aggressive takeoff maneuver, which resulted in a loss of control.
- [NTSB WPR11FA395](https://openairdocs.org/ntsb/WPR11FA395.md): Maule M-7-235C · Brookings, OR · Accident · 1 fatal · Field investigation · Final report · Aug 21, 2011 · N199BF · Substantial damage
  > The pilot’s improper decision to continue flight under visual flight rules into instrument meteorological conditions, which resulted in a collision with trees while on approach for landing.
- [NTSB SEA06FA159](https://openairdocs.org/ntsb/SEA06FA159.md): Robinson R44 II · Warrenton, OR · Accident · 3 fatal · Field investigation · Final report · Aug 13, 2006 · N168PT · Destroyed
  > The pilot's intentional flight into instrument meteorological conditions while maneuvering which resulted in an in flight collision with terrain/water.
- [NTSB SEA02LA020](https://openairdocs.org/ntsb/SEA02LA020.md): Maule M-7-235 · Halfway, OR · Accident · No injuries · Limited investigation · Final report · Dec 10, 2001 · N61385 · Substantial damage
  > A loss of aircraft control for undetermined reasons. A factor was a snow-covered landing surface.
- [NTSB SEA97LA014](https://openairdocs.org/ntsb/SEA97LA014.md): Cessna 172M · Albany, OR · Accident · Minor injuries · Limited investigation · Final report · Oct 12, 1996 · N9579H · 2 aircraft · Substantial damage
  > failure of the SA-750 pilot to see-and-avoid the Cessna 172, which had landed ahead of him on the same runway. The inherent visual restrictions of the SA-750 (a tandem two-place biplane) was a related factor.
- [NTSB SEA86FA126](https://openairdocs.org/ntsb/SEA86FA126.md): Lake LA-4-250 · Blue River, OR · Accident · 4 fatal · Field investigation · Final report · May 17, 1986 · N1403A · Destroyed
  > Several witnesses reported seeing the acft flying near the eugene arpt at an alt of 400 to 500 ft AGL. The acft was heading toward the Blue River. The acft was then seen flying over the Blue River forest ranger station aprx 7 minutes prior to the accident. At…
- [NTSB SEA85FA084](https://openairdocs.org/ntsb/SEA85FA084.md): Bellanca 17-31A · Yamhill, OR · Accident · 2 fatal · Field investigation · Final report · Apr 7, 1985 · N9705E · Destroyed
  > Witnesses observed the acft apch the airstrip with excessive speed. Touchdown on the rwy was beyond the halfway point & the acft bounced back into the air. Power was applied for an apparent go-around. The acft cleared tall trees at the end of the runway, but…
- [NTSB SEA72FYC12](https://openairdocs.org/ntsb/SEA72FYC12.md): Callair A-9 · Hermiston, OR · Accident · 1 fatal · Closed · Jul 29, 1971 · N375MC · 2 aircraft · Minor damage
- [NTSB SEA68D0188](https://openairdocs.org/ntsb/SEA68D0188.md): Cessna 175 · Medford, OR · Accident · No injuries · Closed · Sep 3, 1967 · N7277M · 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" = 'OR' 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 ('41530', '41585'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=41530&state=OR

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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.