# NTSB investigations: Allison 250 SER 250HP: 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 SEA06LA124](https://openairdocs.org/ntsb/SEA06LA124.md): Hughes 369D · Salt Lake City, UT · Accident · No injuries · Limited investigation · Final report · Jun 20, 2006 · N88SE · Substantial damage > A loss of rotor rpm for undetermined reasons, resulting in a hard landing on top of the commercial building over which the helicopter was working. - [NTSB DFW06CA142](https://openairdocs.org/ntsb/DFW06CA142.md): Bell 47G-4A · Sheridan, AR · Accident · Serious injuries · Data collection · Final report · May 30, 2006 · N4086C · Substantial damage > The pilot's inadequate fuel management, which resulted in fuel exhaustion and a subsequent loss of engine power. A contributing factor was the lack of suitable terrain for the forced landing. - [NTSB DFW05LA017](https://openairdocs.org/ntsb/DFW05LA017.md): Bell 206B · S.Timbelier 187 · Accident · Serious injuries · Limited investigation · Final report · Nov 5, 2004 · N496RL · Destroyed > The loss of engine power for undetermined reasons. - [NTSB SEA02LA135](https://openairdocs.org/ntsb/SEA02LA135.md): McDonnell Douglas 369D · Medford, OR · Accident · Serious injuries · Limited investigation · Final report · Jul 22, 2002 · N58295 · Substantial damage > Power loss during cruise flight for undetermined reasons. Factors include mountainous terrain and trees. - [NTSB MIA99LA107](https://openairdocs.org/ntsb/MIA99LA107.md): Fairchild Hiller FH-1100 · Opp, AL · Accident · No injuries · Limited investigation · Final report · Mar 16, 1999 · N547FH · Substantial damage > a loss of engine power due to the failure of the engine to transmission drive shaft flex coupling, resulting in an in-flight collision with a vehicle. - [NTSB SEA99FA018](https://openairdocs.org/ntsb/SEA99FA018.md): Hughes 369D · Taholah, WA · Accident · Minor injuries · Field investigation · Final report · Dec 8, 1998 · N1096L · Substantial damage > Turbine wheel failure as the result of a low-cycle fatigue crack that initiated in a beyond-limits grinding gouge. Factors include improper maintenance by unknown parties and tree stumps that prohibited a successful emergency landing. - [NTSB FTW95LA032](https://openairdocs.org/ntsb/FTW95LA032.md): Bell 206L-3 · Ruston, LA · Accident · No injuries · Limited investigation · Final report · Oct 27, 1994 · N206SF · Substantial damage > The pilot's improper handling of the helicopter after an apparent loss of power during a practice autorotation. - [NTSB ANC93FA064](https://openairdocs.org/ntsb/ANC93FA064.md): Fairchild FH-1100 · Malina Bay, AK · Accident · Serious injuries · Field investigation · Final report · May 17, 1993 · N5060F · Substantial damage > The installation of a bogus transmission to engine driveshaft. The failure of the company maintenance personnel to comply with the service bulletins and letters was a factor. - [NTSB NYC89LA126](https://openairdocs.org/ntsb/NYC89LA126.md): Bell 206A · Bedminster, NJ · Accident · Minor injuries · Limited investigation · Final report · Apr 27, 1989 · N273E · Substantial damage > Off airport landing in unsuitable terrain due to an undetermined power loss. - [NTSB LAX87LA099](https://openairdocs.org/ntsb/LAX87LA099.md): Hughes 369D · Lemon Cove, CA · Accident · No injuries · Limited investigation · Final report · Jan 18, 1987 · N1107N · Substantial damage > The plt rprtd that while at 100 to 150 ft AGL on an apch to land, the eng lost pwr as though it had flamed out. He entered an autorotation, but was unable to reach the helipad. Subsequently, the helicopter landed in trees & was badly dmgd. Drg the… - [NTSB MKC85LA207](https://openairdocs.org/ntsb/MKC85LA207.md): Fairchild Hiller FH-1100 · Ashland, KS · Accident · No injuries · Limited investigation · Final report · Sep 3, 1985 · N424FH · Substantial damage > The helicopter lost power and made a hard forced landing in a backyard. There were no leaks in the fuel system but the fuel tank was found to be empty. The owner states that even though the fuel tank was found to be empty after the accident, the fuel quantity… - [NTSB ATL82DLQ08](https://openairdocs.org/ntsb/ATL82DLQ08.md): Bell 206B · 2nm Sw Of Lynch, KY · Accident · Serious injuries · Final report · Aug 2, 1982 · N33TA · Destroyed > The pilot was on a flight to spray powerline right-of-ways with defoliant. During climb, near a 3500 foot ridgeline, the aircraft began to spin to the right. The pilot took corrective action but was not able to stop the spin. The pilot did not have sufficient… - [NTSB FTW82FA204](https://openairdocs.org/ntsb/FTW82FA204.md): Bell 206B · Fairfield, TX · Accident · 2 fatal · Field investigation · Final report · May 31, 1982 · N1482W · Destroyed > Witnesses observed the helicopter flying northbound while traveling parallel and just east of a north-south highway. Reportedly, it enter an autorotative landing approach, crossed over the highway and impacted in an open field on a westerly heading after… - [NTSB SEA82FA070](https://openairdocs.org/ntsb/SEA82FA070.md): Hughes 369D · 6nm Sse Wrangel, AK · Accident · Minor injuries · Field investigation · Final report · May 13, 1982 · N1107T · Substantial damage > The pilot reported that the aircraft was on a reconnaissance flight to survey a proposed powerline project. He reported that during the flight, the engine flamed out and an autorotation was initiated. He maneuvered the helicopter to land in a clearance, but… ## 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 ('03002', '03003') 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=03002&occurrence=350 --- 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.