# NTSB investigations, UT: Loss of engine power(partial) - mech failure/malf 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 ENG07IA034](https://openairdocs.org/ntsb/ENG07IA034.md): Learjet · Salt Lake City, UT · Incident · No injuries · Incident investigation · Final report · Aug 12, 2007 · N244F · No damage > The fatigue fracture of the fan blade due to the blade vendor's improper setup of the forging dies, which resulted in fan blades with airfoils that were below the minimum thickness in the highest stressed area of the airfoil and resulted in operating stresses… - [NTSB LAX07LA114](https://openairdocs.org/ntsb/LAX07LA114.md): Mooney M20B · St. George, UT · Accident · No injuries · Limited investigation · Final report · Mar 18, 2007 · N74503 · Substantial damage > Oil contamination of the right magneto. Factors were the airplane owner's failure to comply with manufacturer's service bulletins and overhaul porcedures. - [NTSB DEN03LA134](https://openairdocs.org/ntsb/DEN03LA134.md): Piper PA-32R-301 · Logan, UT · Accident · No injuries · Limited investigation · Final report · Jul 18, 2003 · N8036D · Substantial damage > the loss of engine power due to partial mechanical failure, which resulted in a forced landing. Contributing factors include the pilot's improper preflight planning/preparation, the improper rigging of the propeller governor control, the high density altitude… - [NTSB DEN02LA010](https://openairdocs.org/ntsb/DEN02LA010.md): Agusta A119 · Ogden, UT · Accident · Minor injuries · Limited investigation · Final report · Nov 9, 2001 · N119RX · Destroyed > improper rigging of the rotary variable differential transformer by the manufacturer, resulting in incorrect fuel scheduling to the fuel control unit. - [NTSB FTW00LA138](https://openairdocs.org/ntsb/FTW00LA138.md): Noteman RV6-A · Kanab, UT · Accident · Minor injuries · Limited investigation · Final report · May 6, 2000 · N456TP · Substantial damage > The partial loss of engine power as result of the failure of an exhaust valve. A factor was the lack of suitable terrain for the forced landing. - [NTSB DEN99TA031](https://openairdocs.org/ntsb/DEN99TA031.md): Hughes 369D · Woodruff, UT · Accident · No injuries · Final report · Jan 4, 1999 · N5013P · Substantial damage > A partial loss of engine power due to erosion in the compressor assembly module. Factors were a missing rotating labyrinth seal, the installation of which had not been performed by unknown maintenance personnel. - [NTSB FTW98LA404](https://openairdocs.org/ntsb/FTW98LA404.md): Piper PA-28RT-201T · Duck Creek, UT · Accident · No injuries · Limited investigation · Final report · Sep 18, 1998 · N8252S · Substantial damage > Loose intake valve rocker arm studs that allowed a loss of compression and a loss of oil. A factor was unsuitable terrain on which to make a forced landing and poles next to a cattle guard. - [NTSB FTW98LA342](https://openairdocs.org/ntsb/FTW98LA342.md): Enstrom F-28F · Bryce Canyon, UT · Accident · No injuries · Limited investigation · Final report · Aug 4, 1998 · N8619M · Substantial damage > A partial loss of engine power due to an oil leak in the turbocharger system. Factors were high vegetation and high density altitude. - [NTSB SEA97LA152](https://openairdocs.org/ntsb/SEA97LA152.md): Cessna 172A · Ogden, UT · Accident · Minor injuries · Limited investigation · Final report · Jun 26, 1997 · N6844X · Substantial damage > The fracture of the no. 4 exhaust valve and subsequent loss of engine power. Factors contributing to the accident include a congested landing area, and rough terrain. - [NTSB SEA97LA061](https://openairdocs.org/ntsb/SEA97LA061.md): Luscombe 8A · Morgan, UT · Accident · No injuries · Limited investigation · Final report · Feb 22, 1997 · N77947 · Substantial damage > Disconnection of the mixture control wire wound cable sheath. A factor was the abrupt, elevated edge of the highway pavement. - [NTSB SEA96LA042](https://openairdocs.org/ntsb/SEA96LA042.md): Cessna 182 · Grantsville, UT · Accident · No injuries · Limited investigation · Final report · Jan 12, 1996 · N91130 · Substantial damage > the failure of the #5 exhaust valve rocker boss, and the subsequent sticking of the exhaust valve in the closed position. Factors include wet, soft terrain in the only available landing area. - [NTSB FTW95FA003](https://openairdocs.org/ntsb/FTW95FA003.md): Cessna T210M · Richmond, UT · Accident · 2 fatal · Field investigation · Final report · Oct 1, 1994 · N732VK · Destroyed > The loss of engine oil pressure due to an oil leak from a loose oil line fitting. Factors were the obscuration, and the unsuitable terrain at the pilot's disposal. - [NTSB SEA92LA149](https://openairdocs.org/ntsb/SEA92LA149.md): Cessna 172L · Delta, UT · Accident · No injuries · Limited investigation · Final report · Jul 11, 1992 · N9871G · Substantial damage > The failure of an intake valve and the poorly executed forced landing. - [NTSB DEN90FA115](https://openairdocs.org/ntsb/DEN90FA115.md): Aerospatiale SA315B · La Sal, UT · Accident · Serious injuries · Field investigation · Final report · May 23, 1990 · N402AH · Substantial damage > A failure of the engine speed governor unit due to improper storage and/or inspection of the speed governor unit prior to placing it in service. A factor in the accident was the pilot carrying passengers on the external load. - [NTSB DEN87LA173](https://openairdocs.org/ntsb/DEN87LA173.md): Beech B-60 · Kanab, UT · Accident · No injuries · Limited investigation · Final report · Jul 6, 1987 · N18444 · Substantial damage > The commercial corporate plt had deplaned his passengers and was beginning the second leg of a corp/exec flight. During ground run the plt detected a manifold pressure loss on the left engine. The plt aborted the takeoff and applied heavy braking. The… - [NTSB DEN87LA094](https://openairdocs.org/ntsb/DEN87LA094.md): Hughes 269C · Scoffield, UT · Accident · No injuries · Limited investigation · Final report · Apr 11, 1987 · N9676F · Substantial damage > The plt and his brother were on a long cross country flt, through mountainous terrain. After one hour of flt and while flying at 8,000 feet the plt noticed a change in engine noise and the acft had a partial power loss. The plt elected to autorotate to a snow… - [NTSB DEN86FTM02](https://openairdocs.org/ntsb/DEN86FTM02.md): Denney Aerocraft Kitfox · Ogden, UT · Accident · Serious injuries · Final report · May 20, 1986 · N85LA · Substantial damage > Shortly after takeoff, the acft had a partial power loss. The left wing then dipped sharply & the acft entered a steep nose low descent & crashed on the nw corner of the arpt. An investigation revealed a noise suppressor was installed on one of 2 spark plug… - [NTSB DEN85LA235](https://openairdocs.org/ntsb/DEN85LA235.md): Cessna 182N · Moab, UT · Accident · No injuries · Limited investigation · Final report · Sep 3, 1985 · N9229 · Substantial damage > The plt stated after the accident that he experienced a loss of power while cruising at 8500 MSL. He was unable to restore power and executed an emergency landing in an open area covered by sage brush. During the landing roll, the acftnosed over. Examination… - [NTSB DEN83FA071](https://openairdocs.org/ntsb/DEN83FA071.md): Cessna 182Q · Lake Powell, UT · Accident · 1 fatal · Field investigation · Final report · Mar 6, 1983 · N96460 · Destroyed > The acft was seen to fly erratically before plunging into the lake during an landing attempt. Investigation revealed a history of pre-existing medical problems that could lead to 'a convulsive episode with accompanied loss of consciousness.' An examination of… - [NTSB DEN82DA118](https://openairdocs.org/ntsb/DEN82DA118.md): Aerospatiale SA 315 B · 35 Se Moab, UT · Accident · Minor injuries · Final report · Jun 26, 1982 · N221RM · Substantial damage > Helicopter lifting sling loads lost power in a hover. Pilot jettisoned load and made a forced landing in a ravine, engine had dirt buildup and erosion in the compressor inlet case which led to compressor stall. - [NTSB DEN82FTM11](https://openairdocs.org/ntsb/DEN82FTM11.md): Bell 47G-3B-1 · Vermal, UT · Accident · Serious injuries · Final report · Apr 28, 1982 · N48217 · Substantial damage > The pilot stated that he experienced a partial loss of engine power during landing at an elevation of about 5280 ft MSL. The temperature was about 50 degrees fahrenheit. He applied full throttle, but the RPM decayed and the plane crash landed. A partial… ## 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."eventStateOrRegion" = 'UT' AND c."eventCountry" = 'USA' AND c."mKey" IN (SELECT o.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o WHERE o."occurrenceNumber" = 1 AND o."occurrenceCode" = 352) ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC ``` This list as a web page: https://openairdocs.org/ntsb?occurrence=352&state=UT --- 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.