NTSB investigations: Lycoming T-53 series, CA
22 cases on aircraft whose registry engine model is Lycoming T-53 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
| 1982 | 2 |
|---|---|
| 1985 | 2 |
| 1986 | 1 |
| 1992 | 1 |
| 1997 | 1 |
| 1998 | 1 |
| 1999 | 2 |
| 2003 | 1 |
| 2006 | 1 |
| 2007 | 2 |
| 2009 | 1 |
| 2011 | 1 |
| 2016 | 1 |
| 2017 | 1 |
| 2022 | 1 |
| 2023 | 2 |
| 2024 | 1 |
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\" = 'CA' 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 ('41552', '41549', '41587'))
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" = 'CA' 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 ('41552', '41549', '41587'))
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 WPR24LA299Accident · Serious injuriesClass 4 · LimitedFinal reportWilliams Helicopter UH-1H · Colusa, CAThe pilot’s failure to set collective friction which resulted in collective bounce and subsequent loss of control.NTSB WPR24LA030Accident · No injuriesClass 3 · LimitedFinal reportArrow Falcon Exporters UH-1H · Firebaugh, CAAn on-ground fuel fire for reasons that could not be determined due to extensive thermal damage.NTSB WPR23LA118Accident · No injuriesClass 4 · LimitedFinal reportBell UH-1B · Orland, CAThe pilot’s inadequate fuel planning, which resulted in fuel exhaustion and a loss of engine power.NTSB WPR22LA084Accident · No injuriesClass 3 · LimitedFinal reportBell UH-1E · Gustine, CAFailure of the 90° gearbox due to the lack of lubricating oil, which resulted in a loss of rotational drive to the tail rotor and a subsequent loss of control of the helicopter.NTSB GAA17CA355Accident · No injuriesData collectionFinal reportBell UH1B · Williams, CAThe pilot’s failure to maintain clearance from transmission wires while maneuvering at a low altitude during an agricultural application flight.NTSB WPR16LA104Accident · No injuriesLimited investigationFinal reportBell UH 1B · Maxwell, CAA reduction in available engine power during takeoff due to a stuck hot air valve, which resulted in low rotor rpm and a forced landing. Contributing to the accident was the lack of dry film lubricant and the presence of corrosion on the hot air valve…NTSB WPR11LA423Accident · Minor injuriesLimited investigationFinal reportArrow Falcon Exporters UH-1H · Stockton, CAA total loss of engine power due to the separation of a tooth from the starter-generator drive gear, which resulted in failure of the engine oil pump and subsequent oil starvation.NTSB WPR09LA241Accident · Serious injuriesLimited investigationFinal reportRotorcraft Development UH-1B · Richvale, CAThe pilot's failure to maintain control of the helicopter during takeoff for undetermined reasons.NTSB LAX07TA227Accident · 1 fatalFinal reportBell 205 A1++ · Happy Camp, CAthe pilot's failure to maintain clearance with the trees during a long-line operation. Contributing factors were the Forest Service's inadequate communication between crews, failure to properly assess the safety of the intended drop zone, reduced visibility…NTSB SEA07LA154Accident · No injuriesLimited investigationFinal reportBell UH-1B · Biggs, CALoss of control during hover for undetermined reasons.NTSB LAX06LA134Accident · No injuriesLimited investigationFinal reportBell UH-1H · Yuba City, CAThe pilot's in-flight loss of control of the helicopter for undetermined reasons. A factor was the trees.NTSB LAX04LA015Accident · No injuriesLimited investigationFinal reportBell UH-1B · Durham, CASeparation of the power turbine shaft retaining bolt resulting in extensive power turbine area damage and a loss of shaft output power.NTSB LAX99LA283Accident · No injuriesLimited investigationFinal reportBell UH-1B · Lost Hills, CAFailure and separation of the 90-degree gearbox as a result of the disengagement of the pinion and gear teeth. The cause(s) of the pinion and gear disengagement were undetermined.NTSB LAX99TA066Accident · Serious injuriesFinal reportBell 205A-1 · Van Nuys, CAA loss of engine power due to an undetermined component failure in the second stage power turbine nozzle area. Factors in the accident were the mountainous/hilly nature of the terrain and the dark night lighting conditions which precluded the pilot from…NTSB LAX98GA127Accident · 4 fatalFinal reportBell 205A-1 · Los Angeles, CAAn excessive bending load applied to the tail rotor blade assembly of an undetermined origin which produced a fatigue crack, the separation of the assembly, and a forced landing. Factors were the lack of suitable terrain to perform a forced landing, the…NTSB LAX97LA206Accident · No injuriesLimited investigationFinal reportBell UH-1B · Heron, CApartial loss of engine power for undetermined reasons. A factor relating to the accident was that the engine lost power when the helicopter was outside (below) the limits of the height/velocity curve.NTSB LAX92T#A16Accident · No injuriesClass 3Final reportBell 204B · Big Sur, CANTSB LAX86DVA06Accident · Minor injuriesFinal reportBell UH-1B · Chowchilla, CAWhile returning from a spraying operation the plt observed that the main transmission oil pressure gage indicated zero. The plt reported that the engine master caution did not illuminate and that the oil temperature gage was normal. The plt stated that he…NTSB LAX85FA115Accident · 1 fatalField investigationFinal reportBell 205A-1 · Newhall, CAThis helicopter collided with hilly terrain while circling at a low altitude. It was following another helicopter in a clockwise circular pattern at the time, and being filmed for the t.v. series 'air wolf'. One witness observed the helicopter decending in…NTSB LAX85LA105Accident · No injuriesLimited investigationFinal reportBell 204 · Snelling, CAPlt vacated the acft with engine at idle & with the blades turning to refuel. The landing platform mounted on the 'nurse' truck was slippery from an oil & copper mixture used in the spraying operation. The helicopter started to slide & the plt reboarded just…NTSB LAX83LA022Accident · Minor injuriesLimited investigationFinal reportBell UH-1B · Delano, CAThe pilot was making a helicopter spray run and decended into trees on th irst pass after reloading. He got a low RPM light in a reduced power situation. No malfunctions were found. The pilot had made 34 similiar operations during this schedule.NTSB LAX82DA264Accident · No injuriesFinal reportBell 204 · Delano, CAThe acft was spraying for mediterranean fruit flies with another acft. Entering a "scissors" or opposite direction pattern with the second helicopter spraying in the opposite direction, the plt had to slow down in order to begin his swath at the completion of…