# NTSB investigations: Lycoming HIO-360 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 SEA08LA035](https://openairdocs.org/ntsb/SEA08LA035.md): Schweizer 269C · Newberg, OR · Accident · Serious injuries · Limited investigation · Final report · Nov 21, 2007 · N61480 · Substantial damage
  > The student pilot's inadvertent application of the fuel shut off valve during flight. Contributing to the accident were the locations of the heater and fuel shutoff controls.
- [NTSB LAX07CA267](https://openairdocs.org/ntsb/LAX07CA267.md): Hughes 269C · Ramona, CA · Accident · Minor injuries · Data collection · Final report · Sep 3, 2007 · N58332 · Substantial damage
  > a loss of engine power for undetermined reasons.
- [NTSB MIA07CA103](https://openairdocs.org/ntsb/MIA07CA103.md): Hughes 269A · Las Piedras, PR · Accident · Serious injuries · Data collection · Final report · May 29, 2007 · N63HD · Substantial damage
  > The failure of the non-certificated pilot to maintain a proper rate of descent during the autorotative landing following a reported loss of engine power for undetermined reasons, resulting in a hard landing.
- [NTSB DFW07LA061](https://openairdocs.org/ntsb/DFW07LA061.md): Hughes 269A · Fulshear, TX · Accident · Minor injuries · Limited investigation · Final report · Jan 27, 2007 · N8503A · Substantial damage
  > The loss of engine power for undetermined reasons. A contributing factor was the lack of suitable terrain for the forced landing.
- [NTSB ATL06LA085](https://openairdocs.org/ntsb/ATL06LA085.md): Hughes 269A · Concord, NC · Accident · No injuries · Limited investigation · Final report · May 26, 2006 · N269RS · Substantial damage
  > The loss of engine power for undetermined reasons while maneuvering, resulting in a forced landing to uneven terrain and a roll over.
- [NTSB DEN05FA080](https://openairdocs.org/ntsb/DEN05FA080.md): Schweizer 269C · Pueblo, CO · Accident · Serious injuries · Field investigation · Final report · Jun 15, 2005 · N311CP · Destroyed
  > the flight instructor's failure to maintain control of the helicopter during the attempted autorotation after the loss of engine power for reasons undetermined. Contributing factors include the flight instructor's improper preflight planning, the high density…
- [NTSB SEA04LA128](https://openairdocs.org/ntsb/SEA04LA128.md): Hughes 269C · Arlington, WA · Accident · No injuries · Limited investigation · Final report · Jul 10, 2004 · N56PH · Substantial damage
  > A significant power loss for undetermined reasons while in cruise flight, leading to a full autorotational landing. Factors include no suitable terrain in the area, and soft swampy terrain at the point where the pilot found it necessary to perform the forced…
- [NTSB FTW03TA190](https://openairdocs.org/ntsb/FTW03TA190.md): Hughes 269A · Freer, TX · Accident · Minor injuries · Final report · Jul 30, 2003 · N81170 · Substantial damage
  > Loss of engine power for undetermined reasons.
- [NTSB LAX03FA060](https://openairdocs.org/ntsb/LAX03FA060.md): Schweizer 269C · Collinsville, CA · Accident · 1 fatal · Field investigation · Final report · Jan 4, 2003 · N98TH · Destroyed
  > A loss of engine power for undetermined reasons, and the pilot's failure to maintain main rotor rpm during the subsequent autorotation. A factor in the accident was the unsuitable nature of the terrain for a forced landing.
- [NTSB CHI01LA215](https://openairdocs.org/ntsb/CHI01LA215.md): Schweizer 269C · Walker, MN · Accident · Minor injuries · Limited investigation · Final report · Jul 15, 2001 · N61434 · Substantial damage
  > the loss of engine power for undetermined reasons during takeoff. Factors were the vehicles, the unsuitable terrain the pilot encountered, and the low altitude of the helicopter at the time of the loss of engine power.
- [NTSB LAX01LA121](https://openairdocs.org/ntsb/LAX01LA121.md): Schweizer 269C · Ojai, CA · Accident · Minor injuries · Limited investigation · Final report · Mar 19, 2001 · N6123A · Substantial damage
  > A loss of engine power for undetermined reasons.
- [NTSB MIA98LA221](https://openairdocs.org/ntsb/MIA98LA221.md): Enstrom F-28F · Marco Island, FL · Accident · No injuries · Limited investigation · Final report · Aug 12, 1998 · N19BZ · Substantial damage
  > The pilot's inadequate fuel management which led to fuel exhaustion. A related factor was the pilot's improper use of the flight controls during autorotation.
- [NTSB FTW98LA084](https://openairdocs.org/ntsb/FTW98LA084.md): Hughes 269C · Riviera, TX · Accident · No injuries · Limited investigation · Final report · Jan 2, 1998 · N1091Y · Substantial damage
  > The total loss of engine power due to a fatigue failure of the crankshaft for undetermined reason. A factor was the lack of suitable terrain for the forced landing.
- [NTSB SEA98LA021](https://openairdocs.org/ntsb/SEA98LA021.md): Enstrom F-28F · John Day, OR · Accident · No injuries · Limited investigation · Final report · Dec 6, 1997 · N171HH · Substantial damage
  > a loss of engine power for undetermined reasons.
- [NTSB ATL97LA067](https://openairdocs.org/ntsb/ATL97LA067.md): Hughes 269A · Lake Wales, FL · Accident · No injuries · Limited investigation · Final report · May 1, 1997 · N37754 · Substantial damage
  > loss of engine power for undetermined reason(s); and the flight instructor's improper flare and improper use of the flight controls, while flaring for an autorotative landing.
- [NTSB MIA97LA103](https://openairdocs.org/ntsb/MIA97LA103.md): Hughes TH-55 · Cullman, AL · Accident · Serious injuries · Limited investigation · Final report · Mar 28, 1997 · N818D · Substantial damage
  > a loss of engine power for undetermined reasons and the pilot-in-command's failure to maintain control of the helicopter. Factors in this accident were: an improper autorotation as a result of improper collective use and resulting failure to maintain main…
- [NTSB SEA97FA003](https://openairdocs.org/ntsb/SEA97FA003.md): Enstrom F-28C · Spokane, WA · Accident · No injuries · Field investigation · Final report · Oct 5, 1996 · N574H · Substantial damage
  > a loss of engine power for undetermined reasons.
- [NTSB LAX94LA201](https://openairdocs.org/ntsb/LAX94LA201.md): Schweizer 300C · Pacific Ocean (Pacific Ocean) · Accident · No injuries · Limited investigation · Final report · Apr 10, 1994 · N60718 · Substantial damage
  > The low altitude of the aircraft when the engine lost power and the pilot's misjudgement of the flare point during the autorotation. Factors in the accident were the loss of engine power and the sunglare.
- [NTSB FTW90LA074](https://openairdocs.org/ntsb/FTW90LA074.md): Hughes 269C · Houma, LA · Accident · No injuries · Limited investigation · Final report · Feb 24, 1990 · N7504A · Substantial damage
  > Loss of engine power for an unknown reason.
- [NTSB BFO89LA054](https://openairdocs.org/ntsb/BFO89LA054.md): Hughes 269C · Baltimore, MD · Accident · No injuries · Limited investigation · Final report · Jul 1, 1989 · N1113Z · Substantial damage
  > The pilot landed on unsuitable soft terrain which caused the landing skid to sink into the ground. This resulted in a landing skid overload failure and nose over of the helicopter. Contributing to the accident was the soft terrain.
- [NTSB LAX89LA044](https://openairdocs.org/ntsb/LAX89LA044.md): Enstrom F-28C · Inyokern, CA · Accident · No injuries · Limited investigation · Final report · Nov 16, 1988 · N552CS · Destroyed
  > The pilot stated that, 'I landed in an open unpopulated area for the mechanic... To make adjustments on the main blade (we were tracking and balancing the blades). I never shut the engine down. I disengaged the clutch. After the adjustment was made, I…
- [NTSB CHI88DEE07](https://openairdocs.org/ntsb/CHI88DEE07.md): Hughes 269C · Sandwich, IL · Accident · No injuries · Final report · Jul 21, 1988 · N7425F · Substantial damage
  > The plt rprtd that while he was conducting spraying opns, he noted a significant loss of eng power. He made a run-on landing in a bean field. As he landed, the left skid dug into a furrow & the helicopter rolled over. During the investigation, which included…
- [NTSB NYC86LA113](https://openairdocs.org/ntsb/NYC86LA113.md): Enstrom F-28C · Ridgefield Park, NJ · Accident · No injuries · Limited investigation · Final report · Apr 27, 1986 · N60PB · Substantial damage
  > A weight imbalance, then a split needle, caused the plt to abort 2 previous attempts to depart. Conditions were corrected & the helicopter departed the waterfront helipad. As it went over the water, the plt noted a loss of eng power. He tried to return to the…

## 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 ('41524')
    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=41524&occurrence=350

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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.