# NTSB investigations: Lycoming TI0-540 series, AK

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 1 of 3 · 122 cases

## Latest cases

- [NTSB ANC26FA091](https://openairdocs.org/ntsb/ANC26FA091.md): Piper PA-24-260 · Seldovia, AK · Accident · 4 fatal · Class 3 · Field · Preliminary report · Aug 26, 2026 · N9485P · Substantial damage
  > On August 26, 2026 about 1317 Alaska daylight time, a Piper PA-24-260 airplane, N9485P, was substantially damaged when it was involved in an accident near Seldovia, Alaska. The pilot and three passengers were fatally injured. The airplane was operated as a…
- [NTSB ANC26LA009](https://openairdocs.org/ntsb/ANC26LA009.md): Piper PA-31-310 · Anchorage, AK · Accident · No injuries · Class 4 · Limited · Investigation open · Jan 12, 2026 · N669CW · Substantial damage
- [NTSB ANC25LA117](https://openairdocs.org/ntsb/ANC25LA117.md): Piper PA-31 · Kotlik, AK · Accident · No injuries · Class 4 · Limited · Final report · Oct 1, 2025 · N16SC · Substantial damage
  > The pilot’s failure to extend the landing gear before landing.
- [NTSB ANC25LA055](https://openairdocs.org/ntsb/ANC25LA055.md): Piper PA-32R-300 · Big Lake, AK · Accident · Serious injuries · Class 3 · Limited · Preliminary report · Jun 24, 2025 · N3609Q · Substantial damage
  > On June 24, 2025, about 0934 Alaska daylight time, a Piper PA-32R-300 airplane, N3609Q, was substantially damaged when it was involved in an accident near Big Lake, Alaska. The pilot and flight instructor were seriously injured. The airplane was operated as a…
- [NTSB ANC25LA016](https://openairdocs.org/ntsb/ANC25LA016.md): Piper PA-31-350 · Fairbanks, AK · Accident · No injuries · Class 4 · Limited · Final report · Jan 10, 2025 · N59826 · Substantial damage
  > The pilot’s failure to recognize that an automated taxiway gate was closing, and the pilot’s failure stop for the closing gate.
- [NTSB ANC24LA074](https://openairdocs.org/ntsb/ANC24LA074.md): Piper PA31 · Fairbanks, AK · Accident · No injuries · Class 4 · Limited · Final report · Aug 5, 2024 · N9FW · Substantial damage
  > The pilot's continuation of an unstabilized approach and his failure to monitor the aircraft's altitude and airspeed during the approach, resulting in a loss of control.
- [NTSB ANC23LA036](https://openairdocs.org/ntsb/ANC23LA036.md): Piper PA31 · Point Thomson, AK · Accident · No injuries · Class 4 · Limited · Final report · May 17, 2023 · N34WM · Substantial damage
  > The pilot’s inadvertent descent below the published minimum descent altitude, while operating in flat light conditions, which resulted in controlled flight into terrain.
- [NTSB ANC20CA067](https://openairdocs.org/ntsb/ANC20CA067.md): Piper PA32 · Naknek, AK · Accident · No injuries · Class 4 · Data collection · Final report · Jul 10, 2020 · N44851 · 2 aircraft · Substantial damage
  > The PA-32 pilot's failure to see and avoid the other airplane.
- [NTSB ANC20CA044](https://openairdocs.org/ntsb/ANC20CA044.md): Piper PA31 · Buckland, AK · Accident · No injuries · Data collection · Final report · Apr 18, 2020 · N88TG · Substantial damage
  > The pilot's failure to extend the landing gear before landing due to distraction by the condition of the runway and his failure to use the Before Landing checklist.
- [NTSB ANC20CA040](https://openairdocs.org/ntsb/ANC20CA040.md): Piper PA32 · Fairbanks, AK · Accident · No injuries · Data collection · Final report · Mar 28, 2020 · N1409X · Substantial damage
  > The pilot's inadequate compensation for gusting crosswind conditions, which resulted in a loss of directional control, a runway excursion, and impact with a snowbank.
- [NTSB ANC20LA013](https://openairdocs.org/ntsb/ANC20LA013.md): Piper PA31 · Fairbanks, AK · Accident · No injuries · Class 3 · Limited · Final report · Jan 12, 2020 · N4112K · Substantial damage
  > The improper installation of a hydraulic line at the right main landing gear (MLG) unlock actuator, which resulted in a total loss of system hydraulic pressure and failure of the landing gear to extend. Contributing to the accident was the failure of the…
- [NTSB ANC20FA007](https://openairdocs.org/ntsb/ANC20FA007.md): Piper PA-31-350 · Cooper Landing, AK · Accident · 3 fatal · Class 3 · Field · Final report · Nov 30, 2019 · N4087G · Destroyed
  > The pilot’s failure to maintain clearance from terrain during gusty wind and reduced visibility night conditions.
- [NTSB ANC19LA016](https://openairdocs.org/ntsb/ANC19LA016.md): Piper PA-32-300 · Bethel, AK · Accident · No injuries · Class 3 · Limited · Final report · Apr 12, 2019 · N4466T · Substantial damage
  > A total loss of engine power due to a fatigue failure of the crankshaft. A contributing factor was the inadequate inspection during the engine’s last overhaul.
- [NTSB ANC19TA014](https://openairdocs.org/ntsb/ANC19TA014.md): Piper PA32R · Anchorage, AK · Accident · Serious injuries · Class 3 · Final report · Feb 13, 2019 · N40449 · No damage
  > The pilot’s failure to ensure that the passenger’s lap belt was appropriately fastened for the forecast turbulent conditions, and the passenger’s failure to tighten her lap belt appropriately, which resulted in the passenger’s serious injury during an…
- [NTSB ANC19CA010](https://openairdocs.org/ntsb/ANC19CA010.md): Piper PA31 · Chignik Lagoon, AK · Accident · No injuries · Class 4 · Data collection · Final report · Jan 21, 2019 · N995AK · Substantial damage
  > The pilot’s selection of an unsuitable runway for landing, which resulted in a loss of control and runway excursion.
- [NTSB ANC18LA069](https://openairdocs.org/ntsb/ANC18LA069.md): Piper PA32 · Wrangell, AK · Accident · No injuries · Class 3 · Limited · Final report · Sep 3, 2018 · N3957X · Substantial damage
  > The total loss of engine power due to oil starvation after an interruption of oil circulation for reasons that could not be determined based on the available evidence.
- [NTSB GAA18CA088](https://openairdocs.org/ntsb/GAA18CA088.md): Piper PA 32R · Kwigillingok, AK · Accident · No injuries · Data collection · Final report · Dec 14, 2017 · N8209C · Substantial damage
  > The pilot’s decision to land with the sun in his eyes, which resulted in a short landing.
- [NTSB ANC15CA027](https://openairdocs.org/ntsb/ANC15CA027.md): Piper PA 31-350 · Homer, AK · Accident · No injuries · Data collection · Final report · May 17, 2015 · N4079H · Substantial damage
  > The pilot's failure to extend the landing gear before landing. Contributing to the accident was the pilot's decision to continue the approach to landing while distracted and his failure to complete the landing checklist.
- [NTSB ANC13LA033](https://openairdocs.org/ntsb/ANC13LA033.md): Piper PA-23-250 · Tyonek, AK · Accident · No injuries · Limited investigation · Final report · Mar 14, 2013 · N6008Y · Substantial damage
  > A total loss of engine power of both engines for reasons that could not be determined because the engines were not made available for examination.
- [NTSB ANC13CA023](https://openairdocs.org/ntsb/ANC13CA023.md): Piper PA-31-350 · Dutch Harbor, AK · Accident · No injuries · Data collection · Final report · Feb 16, 2013 · N15PR · Substantial damage
  > The pilot's decision to land in wind conditions that exceeded the airplane's demonstrated crosswind capability, which resulted in a loss of airplane control during the landing roll.
- [NTSB ANC12LA058](https://openairdocs.org/ntsb/ANC12LA058.md): Piper PA-32-300 · Gustavus, AK · Accident · No injuries · Limited investigation · Final report · Jun 25, 2012 · N8908N · Substantial damage
  > The fatigue failure of the engine crankshaft for reasons that could not be determined during postaccident metallurgical examination.
- [NTSB ANC12CA015](https://openairdocs.org/ntsb/ANC12CA015.md): Piper PA-31-350 · Hughes, AK · Accident · No injuries · Data collection · Final report · Dec 15, 2011 · N9FW · Substantial damage
  > The pilot did not clear the area surrounding the airplane prior to taxi, resulting in the airplane contacting a piece of baggage.
- [NTSB OPS11IA653](https://openairdocs.org/ntsb/OPS11IA653.md): Beech 1900C · Fairbanks, AK · Incident · No injuries · Incident investigation · Final report · Jun 14, 2011 · N121WV · 2 aircraft · No damage
  > Inadequate air traffic control actions that failed to establish and maintain required separation between the two airplanes. Contributing to the incident was inexperience on the part of the local controller, inadequate oversight by the tower…
- [NTSB ANC11LA008](https://openairdocs.org/ntsb/ANC11LA008.md): Piper PA-32-300 · Platinum, AK · Accident · Minor injuries · Limited investigation · Final report · Jan 4, 2011 · N9304K · Substantial damage
  > The pilot's misidentification of the airport's active runway, resulting in an off-runway landing and collision with a ditch/berm.
- [NTSB ANC11LA006](https://openairdocs.org/ntsb/ANC11LA006.md): Piper PA-31-350 · Saint Michael, AK · Accident · No injuries · Limited investigation · Final report · Dec 22, 2010 · N45052 · Substantial damage
  > The loss of directional control during landing due to a flat nose wheel tire, resulting in a runway excursion and collision with trees.
- [NTSB ANC10CA031](https://openairdocs.org/ntsb/ANC10CA031.md): Piper PA-31-350 · Eek, AK · Accident · Minor injuries · Data collection · Final report · May 8, 2010 · N77HV · Substantial damage
  > An in-flight collisions with two Cackling Geese (Branta Hutchinsii).
- [NTSB ANC10CA002](https://openairdocs.org/ntsb/ANC10CA002.md): Piper PA-31-350 · Nondalton, AK · Accident · No injuries · Data collection · Final report · Oct 10, 2009 · N27231 · Substantial damage
  > The pilot's decision to attempt a landing in weather conducive to strong downdrafts, resulting in a loss of control.
- [NTSB ANC09LA030](https://openairdocs.org/ntsb/ANC09LA030.md): Piper PA-32-300 · Nunapitchuk, AK · Accident · No injuries · Limited investigation · Final report · Apr 10, 2009 · N43551 · Substantial damage
  > The pilot's failure to maintain sufficient airspeed to avoid a stall during the landing approach.
- [NTSB ANC09LA025](https://openairdocs.org/ntsb/ANC09LA025.md): Piper PA-31-350 · Buckland, AK · Accident · No injuries · Limited investigation · Final report · Mar 14, 2009 · N4112K · Substantial damage
  > The pilot's failure to abort the landing while landing on a snow/ice-covered runway.
- [NTSB ANC09LA021](https://openairdocs.org/ntsb/ANC09LA021.md): Piper PA-31-350 · Nome, AK · Accident · Serious injuries · Limited investigation · Final report · Feb 19, 2009 · N41185 · Substantial damage
  > The pilot's continued flight into adverse weather and his failure to maintain clearance from terrain while on approach in flat light conditions.
- [NTSB ANC08LA097](https://openairdocs.org/ntsb/ANC08LA097.md): Piper PA-31-350 · Aniak, AK · Accident · Serious injuries · Limited investigation · Final report · Aug 4, 2008 · N40YR · Substantial damage
  > A partial loss of engine power during takeoff due to a failure of the left engine's turbocharger as a result of the failure of a turbine shaft bearing. Contributing to the accident was unsuitable terrain for a forced landing.
- [NTSB ANC08LA074](https://openairdocs.org/ntsb/ANC08LA074.md): Lake L-4 · Girdwood, AK · Accident · No injuries · Limited investigation · Final report · Jun 9, 2008 · N13RZ · Substantial damage
  > A partial loss of engine power for an undetermined reason, which resulted in a forced landing. Contributing to the accident was rough and uneven terrain.
- [NTSB ANC08MA038](https://openairdocs.org/ntsb/ANC08MA038.md): Piper PA-31-350 · Kodiak, AK · Accident · 6 fatal · Major investigation · Final report · Jan 5, 2008 · N509FN · Substantial damage
  > The failure of company maintenance personnel to ensure that the airplane's nose baggage door latching mechanism was properly configured and maintained, resulting in an inadvertent opening of the nose baggage door in flight. Contributing to the accident were…
- [NTSB ANC07LA059](https://openairdocs.org/ntsb/ANC07LA059.md): Piper PA-31 · Kotzebue, AK · Accident · No injuries · Limited investigation · Final report · Jun 29, 2007 · N3535F · Substantial damage
  > Locked parking brakes and the operator's maintenance personnel's failure to properly secure the parking brake cable at its fuselage attaching clamp.
- [NTSB ANC07LA048](https://openairdocs.org/ntsb/ANC07LA048.md): Piper PA-31-350 · Tuluksak, AK · Accident · No injuries · Limited investigation · Final report · Jun 13, 2007 · N200AK · Substantial damage
  > The loss of engine power during cruise due to the pilot's failure to refuel the airplane prior to fuel exhaustion. Factors contributing to the accident were the delayed extension of the gear, and the gear being unlocked at touchdown.
- [NTSB ANC07FA047](https://openairdocs.org/ntsb/ANC07FA047.md): Piper PA-32-300 · Kake, AK · Accident · No injuries · Field investigation · Final report · Jun 11, 2007 · N6117J · Destroyed
  > A fractured exhaust manifold, which resulted in an in-flight fire, and the inadequate inspection of the airplane by the operator's maintenance personnel.
- [NTSB ANC06LA143](https://openairdocs.org/ntsb/ANC06LA143.md): Piper PA-32-300 · Fairbanks, AK · Accident · No injuries · Limited investigation · Final report · Aug 26, 2006 · N4466T · Substantial damage
  > The fracture of the aluminum alloy landing gear adapter assembly, which resulted in a loss of control during the landing roll.
- [NTSB ANC06LA093](https://openairdocs.org/ntsb/ANC06LA093.md): Piper PA-31 · Fairbanks, AK · Accident · No injuries · Limited investigation · Final report · Jul 8, 2006 · N41185 · Substantial damage
  > The pilot's inadvertent landing with the landing gear retracted, which resulted in structural damage to the airplane.
- [NTSB ANC05CA078](https://openairdocs.org/ntsb/ANC05CA078.md): Piper PA-31-310 · Manokotak, AK · Accident · No injuries · Data collection · Final report · May 26, 2005 · N65MR · Substantial damage
  > The pilot's failure to extend the landing gear. A contributing factor was the pilot's failure to use the checklist.
- [NTSB ANC05LA075](https://openairdocs.org/ntsb/ANC05LA075.md): Piper PA-31-350 · Elim, AK · Accident · No injuries · Limited investigation · Final report · May 10, 2005 · N3535F · Substantial damage
  > An improper installation of a fuel line fitting by company maintenance personnel, which resulted in a fuel leak and subsequent in-flight engine compartment fire during cruise flight that was discovered during the landing roll.
- [NTSB ANC05LA068](https://openairdocs.org/ntsb/ANC05LA068.md): Piper PA-31-350 · Utopia, AK · Accident · No injuries · Limited investigation · Final report · Dec 15, 2004 · N792FC · Substantial damage
  > The pilot's misjudged distance/speed while on final approach to land, which resulted in an overrun during the landing roll. Factors associated with the accident are the pilot's inadequate weather evaluation, and a gusty tailwind.
- [NTSB ANC04LA117](https://openairdocs.org/ntsb/ANC04LA117.md): Piper PA-31-350 · Telida, AK · Accident · No injuries · Limited investigation · Final report · Sep 17, 2004 · N41185 · Substantial damage
  > A failure of the pilot-in-command to extend the landing gear, which resulted in a gear-up landing and structural damage to the airplane.
- [NTSB ANC04LA068](https://openairdocs.org/ntsb/ANC04LA068.md): Cessna 185 · Skwentna, AK · Accident · No injuries · Limited investigation · Final report · Jun 13, 2004 · N185AV · Substantial damage
  > The pilot's inadequate compensation for wind conditions and his inadequate flare while landing, which resulted in a hard landing and collapse of the main landing gear. Factors associated with the accident were a downdraft, and rough and uneven terrain.
- [NTSB ANC04LA059](https://openairdocs.org/ntsb/ANC04LA059.md): Piper PA-31-350 · Goodnews, AK · Accident · No injuries · Limited investigation · Final report · May 23, 2004 · N4105D · Substantial damage
  > The pilot's inadequate weather evaluation which resulted in an in-flight encounter with severe turbulence, and his exceedence of the design stress limits resulting in overstress of the wings. A factor contributing to the accident was the presence of…
- [NTSB ANC04LA018](https://openairdocs.org/ntsb/ANC04LA018.md): Piper PA-31-350 · Koyukuk, AK · Accident · Serious injuries · Limited investigation · Final report · Jan 2, 2004 · N45008 · Substantial damage
  > The pilot's continued flight into adverse weather conditions, and his failure to maintain clearance from terrain, which resulted in an in-flight collision with terrain. Factors associated with the accident were fog and whiteout weather conditions.
- [NTSB ANC03LA125](https://openairdocs.org/ntsb/ANC03LA125.md): Piper PA-31-310 · Cape Yakataga, AK · Accident · No injuries · Limited investigation · Final report · Sep 25, 2003 · N27987 · Substantial damage
  > The pilot's failure to follow the prelanding checklist, which resulted in a wheels up landing when he neglected to lower the airplane's landing gear. A factor in the accident was the pilot's diverted attention associated with turbulence and a wet airstrip.
- [NTSB ANC03LA044](https://openairdocs.org/ntsb/ANC03LA044.md): Piper PA-32-300 · Kotzebue, AK · Accident · No injuries · Limited investigation · Final report · Apr 16, 2003 · N2863T · Substantial damage
  > The pilot's failure to maintain adequate altitude/clearance, which resulted in an in-flight collision with terrain during cruise flight. Factors associated with the accident were flat light conditions, and snow-covered terrain.
- [NTSB ANC03LA032](https://openairdocs.org/ntsb/ANC03LA032.md): Rockwell 500-S · Chickaloon, AK · Accident · No injuries · Limited investigation · Final report · Mar 19, 2003 · N903AK · Substantial damage
  > The improper installation of an engine fuel line fitting by contracted maintenance personnel resulting in an in-flight engine fire. Contributing factors in the accident were an inadequate annual inspection by company maintenance personnel, and the lack of…
- [NTSB ANC03LA005](https://openairdocs.org/ntsb/ANC03LA005.md): Piper PA-32 · Bethel, AK · Accident · No injuries · Limited investigation · Final report · Oct 22, 2002 · N76RL · 2 aircraft · Minor damage
  > The failure of both pilot's to maintain a visual outlook during taxi operations on the ramp.
- [NTSB ANC02LA117](https://openairdocs.org/ntsb/ANC02LA117.md): Piper PA-32R · Manley Hot Spgs, AK · Accident · No injuries · Limited investigation · Final report · Sep 4, 2002 · N40449 · Substantial damage
  > A bird strike during takeoff, which resulted in substantial damage to the right wing.

Next page: https://openairdocs.org/ntsb.md?engine=41533&state=AK&page=2

## 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" = 'AK' 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 ('41533'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=41533&state=AK

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