NTSB investigations: Lycoming TI0-540 series, AK
122 cases on aircraft whose registry engine model is Lycoming TI0-540 series. Aircraft are matched to the registry by N-number and event date, checked against the reported serial number, make and model, so older matches can be wrong.
Cases per year
| 1967 | 2 |
|---|---|
| 1968 | 3 |
| 1971 | 2 |
| 1972 | 1 |
| 1973 | 1 |
| 1974 | 1 |
| 1976 | 1 |
| 1977 | 2 |
| 1978 | 4 |
| 1980 | 3 |
| 1981 | 2 |
| 1982 | 4 |
| 1983 | 1 |
| 1984 | 2 |
| 1985 | 1 |
| 1986 | 1 |
| 1987 | 2 |
| 1988 | 1 |
| 1989 | 3 |
| 1990 | 1 |
| 1991 | 4 |
| 1992 | 3 |
| 1993 | 4 |
| 1994 | 3 |
| 1995 | 2 |
| 1996 | 1 |
| 1997 | 3 |
| 1998 | 1 |
| 1999 | 4 |
| 2000 | 4 |
| 2001 | 2 |
| 2002 | 5 |
| 2003 | 3 |
| 2004 | 5 |
| 2005 | 2 |
| 2006 | 2 |
| 2007 | 3 |
| 2008 | 3 |
| 2009 | 4 |
| 2010 | 2 |
| 2011 | 3 |
| 2012 | 1 |
| 2013 | 2 |
| 2015 | 1 |
| 2017 | 1 |
| 2018 | 1 |
| 2019 | 4 |
| 2020 | 4 |
| 2023 | 1 |
| 2024 | 1 |
| 2025 | 3 |
| 2026 | 2 |
Where
Open the mapLatest cases
Query with SQL
duckdb -csv -c "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"Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.
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" DESCRun it at the DuckDB prompt, or in any tool that reads Parquet over HTTPS. More ways to query the release are on Use the data.
NTSB ANC26FA091Accident · 4 fatalClass 3 · FieldPreliminary reportPiper PA-24-260 · Seldovia, AKOn 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 ANC26LA009Accident · No injuriesClass 4 · LimitedInvestigation openPiper PA-31-310 · Anchorage, AKNTSB ANC25LA117Accident · No injuriesClass 4 · LimitedFinal reportPiper PA-31 · Kotlik, AKThe pilot’s failure to extend the landing gear before landing.NTSB ANC25LA055Accident · Serious injuriesClass 3 · LimitedPreliminary reportPiper PA-32R-300 · Big Lake, AKOn 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 ANC25LA016Accident · No injuriesClass 4 · LimitedFinal reportPiper PA-31-350 · Fairbanks, AKThe pilot’s failure to recognize that an automated taxiway gate was closing, and the pilot’s failure stop for the closing gate.NTSB ANC24LA074Accident · No injuriesClass 4 · LimitedFinal reportPiper PA31 · Fairbanks, AKThe 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 ANC23LA036Accident · No injuriesClass 4 · LimitedFinal reportPiper PA31 · Point Thomson, AKThe pilot’s inadvertent descent below the published minimum descent altitude, while operating in flat light conditions, which resulted in controlled flight into terrain.NTSB ANC20CA067Accident · No injuriesClass 4 · Data collectionFinal reportPiper PA32 · Naknek, AKThe PA-32 pilot's failure to see and avoid the other airplane.NTSB ANC20CA044Accident · No injuriesData collectionFinal reportPiper PA31 · Buckland, AKThe 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 ANC20CA040Accident · No injuriesData collectionFinal reportPiper PA32 · Fairbanks, AKThe 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 ANC20LA013Accident · No injuriesClass 3 · LimitedFinal reportPiper PA31 · Fairbanks, AKThe 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 ANC20FA007Accident · 3 fatalClass 3 · FieldFinal reportPiper PA-31-350 · Cooper Landing, AKThe pilot’s failure to maintain clearance from terrain during gusty wind and reduced visibility night conditions.NTSB ANC19LA016Accident · No injuriesClass 3 · LimitedFinal reportPiper PA-32-300 · Bethel, AKA 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 ANC19TA014Accident · Serious injuriesClass 3Final reportPiper PA32R · Anchorage, AKThe 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 ANC19CA010Accident · No injuriesClass 4 · Data collectionFinal reportPiper PA31 · Chignik Lagoon, AKThe pilot’s selection of an unsuitable runway for landing, which resulted in a loss of control and runway excursion.NTSB ANC18LA069Accident · No injuriesClass 3 · LimitedFinal reportPiper PA32 · Wrangell, AKThe 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 GAA18CA088Accident · No injuriesData collectionFinal reportPiper PA 32R · Kwigillingok, AKThe pilot’s decision to land with the sun in his eyes, which resulted in a short landing.NTSB ANC15CA027Accident · No injuriesData collectionFinal reportPiper PA 31-350 · Homer, AKThe 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 ANC13LA033Accident · No injuriesLimited investigationFinal reportPiper PA-23-250 · Tyonek, AKA 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 ANC13CA023Accident · No injuriesData collectionFinal reportPiper PA-31-350 · Dutch Harbor, AKThe 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 ANC12LA058Accident · No injuriesLimited investigationFinal reportPiper PA-32-300 · Gustavus, AKThe fatigue failure of the engine crankshaft for reasons that could not be determined during postaccident metallurgical examination.NTSB ANC12CA015Accident · No injuriesData collectionFinal reportPiper PA-31-350 · Hughes, AKThe pilot did not clear the area surrounding the airplane prior to taxi, resulting in the airplane contacting a piece of baggage.NTSB OPS11IA653Incident · No injuriesIncident investigationFinal reportBeech 1900C · Fairbanks, AKInadequate 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 ANC11LA008Accident · Minor injuriesLimited investigationFinal reportPiper PA-32-300 · Platinum, AKThe pilot's misidentification of the airport's active runway, resulting in an off-runway landing and collision with a ditch/berm.NTSB ANC11LA006Accident · No injuriesLimited investigationFinal reportPiper PA-31-350 · Saint Michael, AKThe loss of directional control during landing due to a flat nose wheel tire, resulting in a runway excursion and collision with trees.NTSB ANC10CA031Accident · Minor injuriesData collectionFinal reportPiper PA-31-350 · Eek, AKAn in-flight collisions with two Cackling Geese (Branta Hutchinsii).NTSB ANC10CA002Accident · No injuriesData collectionFinal reportPiper PA-31-350 · Nondalton, AKThe pilot's decision to attempt a landing in weather conducive to strong downdrafts, resulting in a loss of control.NTSB ANC09LA030Accident · No injuriesLimited investigationFinal reportPiper PA-32-300 · Nunapitchuk, AKThe pilot's failure to maintain sufficient airspeed to avoid a stall during the landing approach.NTSB ANC09LA025Accident · No injuriesLimited investigationFinal reportPiper PA-31-350 · Buckland, AKThe pilot's failure to abort the landing while landing on a snow/ice-covered runway.NTSB ANC09LA021Accident · Serious injuriesLimited investigationFinal reportPiper PA-31-350 · Nome, AKThe pilot's continued flight into adverse weather and his failure to maintain clearance from terrain while on approach in flat light conditions.NTSB ANC08LA097Accident · Serious injuriesLimited investigationFinal reportPiper PA-31-350 · Aniak, AKA 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 ANC08LA074Accident · No injuriesLimited investigationFinal reportLake L-4 · Girdwood, AKA 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 ANC08MA038Accident · 6 fatalMajor investigationFinal reportPiper PA-31-350 · Kodiak, AKThe 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 ANC07LA059Accident · No injuriesLimited investigationFinal reportPiper PA-31 · Kotzebue, AKLocked parking brakes and the operator's maintenance personnel's failure to properly secure the parking brake cable at its fuselage attaching clamp.NTSB ANC07LA048Accident · No injuriesLimited investigationFinal reportPiper PA-31-350 · Tuluksak, AKThe 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 ANC07FA047Accident · No injuriesField investigationFinal reportPiper PA-32-300 · Kake, AKA fractured exhaust manifold, which resulted in an in-flight fire, and the inadequate inspection of the airplane by the operator's maintenance personnel.NTSB ANC06LA143Accident · No injuriesLimited investigationFinal reportPiper PA-32-300 · Fairbanks, AKThe fracture of the aluminum alloy landing gear adapter assembly, which resulted in a loss of control during the landing roll.NTSB ANC06LA093Accident · No injuriesLimited investigationFinal reportPiper PA-31 · Fairbanks, AKThe pilot's inadvertent landing with the landing gear retracted, which resulted in structural damage to the airplane.NTSB ANC05CA078Accident · No injuriesData collectionFinal reportPiper PA-31-310 · Manokotak, AKThe pilot's failure to extend the landing gear. A contributing factor was the pilot's failure to use the checklist.NTSB ANC05LA075Accident · No injuriesLimited investigationFinal reportPiper PA-31-350 · Elim, AKAn 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 ANC05LA068Accident · No injuriesLimited investigationFinal reportPiper PA-31-350 · Utopia, AKThe 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 ANC04LA117Accident · No injuriesLimited investigationFinal reportPiper PA-31-350 · Telida, AKA 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 ANC04LA068Accident · No injuriesLimited investigationFinal reportCessna 185 · Skwentna, AKThe 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 ANC04LA059Accident · No injuriesLimited investigationFinal reportPiper PA-31-350 · Goodnews, AKThe 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 ANC04LA018Accident · Serious injuriesLimited investigationFinal reportPiper PA-31-350 · Koyukuk, AKThe 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 ANC03LA125Accident · No injuriesLimited investigationFinal reportPiper PA-31-310 · Cape Yakataga, AKThe 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 ANC03LA044Accident · No injuriesLimited investigationFinal reportPiper PA-32-300 · Kotzebue, AKThe 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 ANC03LA032Accident · No injuriesLimited investigationFinal reportRockwell 500-S · Chickaloon, AKThe 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 ANC03LA005Accident · No injuriesLimited investigationFinal reportPiper PA-32 · Bethel, AKThe failure of both pilot's to maintain a visual outlook during taxi operations on the ramp.NTSB ANC02LA117Accident · No injuriesLimited investigationFinal reportPiper PA-32R · Manley Hot Spgs, AKA bird strike during takeoff, which resulted in substantial damage to the right wing.