# NTSB investigations: Lycoming VO-540 series: Loss of engine power

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 LAX01LA245](https://openairdocs.org/ntsb/LAX01LA245.md): Hiller UH-12E · Blythe, CA · Accident · No injuries · Limited investigation · Final report · Jul 13, 2001 · N9281P · Substantial damage
  > The selection by the pilot of an unsuitable precautionary landing site on soft, uneven terrain, which resulted in a rollover.
- [NTSB MIA98FA229](https://openairdocs.org/ntsb/MIA98FA229.md): Bell 47G-4A · Carrollton, AL · Accident · No injuries · Field investigation · Final report · Aug 23, 1998 · N7162M · Substantial damage
  > The pilots failure to follow written instructions in the flight manual for an engine failure, and the improper use of flight controls (cyclic/collective) during an autorotation resulting in a hard landing, and collision of the main rotor blades with the…
- [NTSB CHI98LA312](https://openairdocs.org/ntsb/CHI98LA312.md): Hiller UH-12E · Shelton, NE · Accident · Serious injuries · Limited investigation · Final report · Aug 14, 1998 · N88782 · Substantial damage
  > The pilot mismanaged the fuel which led to fuel starvation and subsequent loss of engine power.
- [NTSB CHI98LA012](https://openairdocs.org/ntsb/CHI98LA012.md): Hiller UH-12E · Liberty, NE · Accident · No injuries · Limited investigation · Final report · Oct 9, 1997 · N4027L · Substantial damage
  > A loss of engine power for undetermined reasons.
- [NTSB FTW96LA285](https://openairdocs.org/ntsb/FTW96LA285.md): Hiller UH12 · Franklin, LA · Accident · No injuries · Limited investigation · Final report · Jul 1, 1996 · N14637 · Substantial damage
  > loss of engine power for undetermined reasons, and the pilot's failure to maintain rotor RPM. A factor was the unsuitable terrain available for the precautionary landing.
- [NTSB ATL96LA076](https://openairdocs.org/ntsb/ATL96LA076.md): Hiller UH12-E · Huger, SC · Accident · Serious injuries · Limited investigation · Final report · Apr 3, 1996 · N14MQ · Substantial damage
  > The blocked fuel vent line that resulted in engine stoppage. A factor was tall trees that intervened the helicopter's flight path.
- [NTSB FTW95LA230](https://openairdocs.org/ntsb/FTW95LA230.md): Hiller UH-12E · Checotah, OK · Accident · Minor injuries · Limited investigation · Final report · Jun 4, 1995 · N4254X · Substantial damage
  > The pilot allowing the helicopter to touchdown improperly. A factor was the erratic running engine.
- [NTSB MIA94LA029](https://openairdocs.org/ntsb/MIA94LA029.md): Hiller UH-12E · Moore Haven, FL · Accident · Minor injuries · Limited investigation · Final report · Nov 26, 1993 · N130HA · Substantial damage
  > Failure of the pilot-in-command to maintain aircraft control following loss of engine power for undetermined reasons.
- [NTSB CHI94LA022](https://openairdocs.org/ntsb/CHI94LA022.md): Hiller UH12E · Sioux Rapids, IA · Accident · No injuries · Limited investigation · Final report · Oct 22, 1993 · N4026S · Destroyed
  > the Pilot in Command failed to maintain clearance with the terrain while proceeding up an upslope.
- [NTSB CHI92DCD09](https://openairdocs.org/ntsb/CHI92DCD09.md): Hiller Hiller UH-12E · Dows, IA · Accident · No injuries · Final report · Aug 21, 1992 · N527HA · Substantial damage
  > Contaminated fuel resulting in a loss of engine power.
- [NTSB LAX91LA388](https://openairdocs.org/ntsb/LAX91LA388.md): Texas Helicopter M74 · Farmington, CA · Accident · 1 fatal · Limited investigation · Final report · Sep 11, 1991 · N43921 · Destroyed
  > Loss of engine power for an undetermined reason. Factors related to the accident were: the excessive gross weight of the helicopter, and the pilot's improper use of flight controls due to impairment from use of a drug (marijuanna).
- [NTSB LAX91LA249](https://openairdocs.org/ntsb/LAX91LA249.md): Hiller UH-12E · Huron, CA · Accident · No injuries · Limited investigation · Final report · Jun 7, 1991 · N507HA · Substantial damage
  > That unknown pilot(s) impoperly used the throttle control which caused an overspeed condition. Contributing to this accident was the connecting rod bolt fatigue failure.
- [NTSB BFO91LA018](https://openairdocs.org/ntsb/BFO91LA018.md): Bell 47J2A · Matoaca, VA · Accident · No injuries · Limited investigation · Final report · Nov 23, 1990 · N8514P · Substantial damage
  > The failure of four propeller retention and the pilot's misjudgement of the forced landing approach.
- [NTSB NYC88LA170](https://openairdocs.org/ntsb/NYC88LA170.md): Bell 47J2 · Newburyport, MA · Accident · Serious injuries · Limited investigation · Final report · Jun 25, 1988 · N51711 · Destroyed
  > The helicopter departed runway 10 at plum island airport, turned left over the plum island river and shortly thereafter the engine quit. The pilot stated that no warning was noted and a check of the instruments indicated no problems. He further stated that…
- [NTSB MIA88LA014](https://openairdocs.org/ntsb/MIA88LA014.md): Hiller UH-12E · Union Church, MS · Accident · Minor injuries · Limited investigation · Final report · Oct 6, 1987 · N4029R · Substantial damage
  > At an altitude of aprx 75 feet during an agricultural turn, the plt reported that the engine lost power. While executing a forced landing, the rotor blades contacted trees, after which, during the descent, the right skid collided with a stump & the helicopter…
- [NTSB NYC86LA227](https://openairdocs.org/ntsb/NYC86LA227.md): Bell 47J-2A · Newburyport, MA · Accident · No injuries · Limited investigation · Final report · Aug 22, 1986 · N255PH · Substantial damage
  > The plt experienced a total power loss of the acft eng while practicing autorotations. The helicopter landed hard, the main rotor flexed and severed the tail boom. Post accident inspection of the helicopter revealed the fuel selector was positioned on the…
- [NTSB SEA85LA107](https://openairdocs.org/ntsb/SEA85LA107.md): Hiller UH-12E · Fall Creek, OR · Accident · No injuries · Limited investigation · Final report · May 5, 1985 · N28872 · Substantial damage
  > The helicopter sustained substantial damage during a forced landing following a loss of power. According to the plt, the helicopter was refueled aprx 1 hr flt time prior to the accident. Cause of the power loss was not determined.
- [NTSB MIA82DA181](https://openairdocs.org/ntsb/MIA82DA181.md): Bell 47G4 · Madison, FL · Accident · Minor injuries · Final report · Sep 13, 1982 · N1151W · Substantial damage
  > The eng did not respond when power was added beginning a swath run. The plt hit the dump button to jettison the load & collided with the ground. Eng teardown revealed no evidence of failure or malfunction prior to the accident.
- [NTSB MKC82DA135](https://openairdocs.org/ntsb/MKC82DA135.md): Bell 47J-2 · Chesterfield, MO · Accident · No injuries · Final report · Jul 31, 1982 · N4070B · Substantial damage
  > The pilot stated that he took off and was going through translational lift at about 15 to 20 ft AGL when he heard a loud bang. He said the loud bang was accompanied by a power loss. An immediate descent was made and the helicopter was landed hard with a…

## 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."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('41534', '41582')
    AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o WHERE o.case_mkey = x.case_mkey AND o.aircrafts_position = x.position AND o."occurrenceNumber" = 1 AND o."occurrenceCode" = 350))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?engine=41534&occurrence=350

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