# NTSB investigations: Allison 250-C20 series: Loss of engine power(total) - nonmechanical 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 ANC06CA122](https://openairdocs.org/ntsb/ANC06CA122.md): Bell 206B · Orlando, FL · Accident · No injuries · Data collection · Final report · Aug 9, 2006 · N121RH · Substantial damage > The pilot's failure to refuel the helicopter prior to the accident flight, which resulted in a loss of engine power during cruise flight, and a hard landing. - [NTSB DFW06CA112](https://openairdocs.org/ntsb/DFW06CA112.md): Bell 206B · Vinita, OK · Accident · No injuries · Data collection · Final report · May 2, 2006 · N342WC · Substantial damage > The pilot's improper pre-flight planning, which resulted in a total loss of engine power due to fuel exhaustion. A contributing factor was the lack of suitable terrain for the forced landing. - [NTSB MIA04LA129](https://openairdocs.org/ntsb/MIA04LA129.md): Bell 206B3 · Starkville, MS · Accident · Minor injuries · Limited investigation · Final report · Sep 25, 2004 · N96PH · Substantial damage > The operator's inadequate maintenance inspections and the pilot's inadequate preflight inspection, which resulted in the helicopter being operated with a contaminated fuel system, that resulted in fuel starvation, and the loss of engine power. - [NTSB NYC03LA031](https://openairdocs.org/ntsb/NYC03LA031.md): Bell 206B · Odenton, MD · Accident · No injuries · Limited investigation · Final report · Dec 18, 2002 · N651GA · Substantial damage > The pilot's failure to monitor his fuel supply which resulted in a power loss due to fuel exhaustion, and the pilot's misjudged flare, which resulted in a hard landing. - [NTSB DEN02LA046](https://openairdocs.org/ntsb/DEN02LA046.md): Bell 206B-III · Moab, UT · Accident · No injuries · Limited investigation · Final report · May 24, 2002 · N191RH · Substantial damage > The pilot's failure to maintain rotor rpm during a forced landing. A contributing factor was fuel starvation. - [NTSB SEA02FA030](https://openairdocs.org/ntsb/SEA02FA030.md): Agusta A109A II · Baring, WA · Accident · Serious injuries · Field investigation · Final report · Jan 20, 2002 · N55NW · Substantial damage > The sequential non-mechanical total loss of power in both engines 1 and 2 for undetermined reasons and the pilot's failure to maintain adequate rotor RPM to prevent a hard landing. Contributing factors were the tripped "RPM WARN" circuit breaker which… - [NTSB LAX99FA136](https://openairdocs.org/ntsb/LAX99FA136.md): Bell 206B · Grand Canyon, AZ · Accident · 1 fatal · Field investigation · Final report · Apr 1, 1999 · N992UC · Destroyed > The failure of the flight crew to properly preflight the helicopter and to detect and remove accumulated snow from the engine inlets and plenum chamber. Factors in the accident were the clouded plenum chamber inspection window and the failure of preceding… - [NTSB SEA97LA032](https://openairdocs.org/ntsb/SEA97LA032.md): Hughes 369D · Forks, WA · Accident · Serious injuries · Limited investigation · Final report · Nov 16, 1996 · N5225C · Substantial damage > fuel contamination, which resulted in loss of engine power. Factors relating to the accident included: improper servicing of the helicopter, and a lack of suitable terrain for an emergency landing due to the proximity of trees. - [NTSB ANC95LA014](https://openairdocs.org/ntsb/ANC95LA014.md): Bell 206B · Kenai, AK · Accident · No injuries · Limited investigation · Final report · Dec 4, 1994 · N3179X · Substantial damage > The pilot's failure to follow the information in the flight manual concerning the use of the particle separator kit and deflector kit when operating in falling snow. Factors were the rough terrain in the forced landing area and no installation of the… - [NTSB SEA95LA013](https://openairdocs.org/ntsb/SEA95LA013.md): Hiller UH-12E4 · Morton, WA · Accident · No injuries · Limited investigation · Final report · Oct 28, 1994 · N80NW · Substantial damage > A leak in the fuel filler cap and water in the fuel system. A factor to the accident was: inadequate preflight. - [NTSB SEA94LA094](https://openairdocs.org/ntsb/SEA94LA094.md): Hughes 369D · Rimrock, WA · Accident · Minor injuries · Limited investigation · Final report · Apr 1, 1994 · N5211R · Substantial damage > Fuel exhaustion, the pilot in command's failure to refuel the aircraft, and the inability to successfully execute an auto- rotation landing because of the low altitude. - [NTSB LAX91LA054](https://openairdocs.org/ntsb/LAX91LA054.md): Mcdonnell Douglas 369D · Haleakla Nat Pk, HI · Accident · 1 fatal · Limited investigation · Final report · Dec 9, 1990 · N1113L · Substantial damage > Fuel starvation due to the unporting of the fuel supply pick-up. - [NTSB NYC90LA187](https://openairdocs.org/ntsb/NYC90LA187.md): Bell 206B · Fitchburg, MA · Accident · No injuries · Limited investigation · Final report · Aug 4, 1990 · N750LT · Substantial damage > The pilot's failure to assure that adequate fuel was on board for the flight. - [NTSB LAX88LA322](https://openairdocs.org/ntsb/LAX88LA322.md): Hughes 369HS · Columbia, CA · Accident · No injuries · Limited investigation · Final report · Sep 16, 1988 · N9110F · Substantial damage > During an external load operation, there was an indication of high torque and the oil chip light illuminated. The engine lost power and the pilot initiated an autorotation. The helicopter collided with the sloping terrain and rolled over. Inspection of the… - [NTSB LAX88LA043](https://openairdocs.org/ntsb/LAX88LA043.md): Hughes 369D · Honolulu, HI · Accident · No injuries · Limited investigation · Final report · Nov 14, 1987 · N1113L · Substantial damage > The plt rprtd that during an external load operation, the helicopter ran out of fuel. Subsequently, it was damaged when it touched down hard during a forced landing. - [NTSB LAX85LA407](https://openairdocs.org/ntsb/LAX85LA407.md): Bell 206B · Pacific Ocean (Pacific Ocean) · Accident · Serious injuries · Limited investigation · Final report · Sep 17, 1985 · N2160L · Destroyed > The helicopter experienced a loss of pwr within 10 minutes after takeoff from a fishing vessel. The helicopter was ditched in the Ocean at coordinates 11.25'N and 103.37'W. Examination of fuel samples from the fishing vessel revealed both upper and lower fuel… - [NTSB LAX85LA282](https://openairdocs.org/ntsb/LAX85LA282.md): Bell 206B-III · Lahaina, HI · Accident · No injuries · Limited investigation · Final report · Jun 15, 1985 · N3179X · Substantial damage > The pilot reported that the engine failed at an altitude of 800 feet MSL during the climb to cruise phase of a sightseeing flight with 3 passengers on board. The acft landed in the surf of the pacific ocean and damaged the tail rotor. The pilot and passengers… - [NTSB SEA85LA031](https://openairdocs.org/ntsb/SEA85LA031.md): Hiller UH-12ET · Hoquiam, WA · Accident · Minor injuries · Limited investigation · Final report · Dec 18, 1984 · N100LM · Substantial damage > Plt reported that while in normal cruise flight, a total loss of power occurred. Autorotation was effected in mountainous, wooded terrain. Examination of the engine showed continuity and freedom of rotation. Examination of the fuel system disclosed no… ## 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 ('03020') 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" = 353)) ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC ``` This list as a web page: https://openairdocs.org/ntsb?engine=03020&occurrence=353 --- 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.