# NTSB investigations: 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. Page 9 of 29 · 1,408 cases ## Cases, newest first - [NTSB FTW97LA077](https://openairdocs.org/ntsb/FTW97LA077.md): Piper PA-28R-201T · Raton, NM · Accident · No injuries · Limited investigation · Final report · Dec 31, 1996 · N40437 · Substantial damage > failure of the exhaust rocker arm retaining studs due to over torquing of the attachment bolts by maintenance personnel during installation. A factor was the lack of suitable terrain for the forced landing. - [NTSB MIA97LA039](https://openairdocs.org/ntsb/MIA97LA039.md): Wiedemann KIT FOX · Montgomery, AL · Accident · No injuries · Limited investigation · Final report · Dec 15, 1996 · N19VX · Substantial damage > improper installation of a throttle cable clamp by an unknown person, resulting in a loose throttle cable housing and an inability to control the throttle position; and failure of the pilot to maintain adequate airspeed during an approach for an emergency… - [NTSB MIA97LA032](https://openairdocs.org/ntsb/MIA97LA032.md): Piper PA-28-180 · Sugarloaf Key, FL · Accident · Serious injuries · Limited investigation · Final report · Dec 1, 1996 · N9545J · Substantial damage > a complete loss of engine power due to a disconnected connecting rod cap. - [NTSB ANC97LA005](https://openairdocs.org/ntsb/ANC97LA005.md): Ken Seright Rotorway Exec 162F · Haines, AK · Accident · No injuries · Limited investigation · Final report · Oct 29, 1996 · N711KN · Substantial damage > a leaking coolant hose that saturated the induction air filter and one electronic ignition system with coolant. Unsuitable terrain for a forced landing was a related factor in the accident. - [NTSB MIA97LA006](https://openairdocs.org/ntsb/MIA97LA006.md): Cessna 150F · Lexington, TN · Accident · Serious injuries · Limited investigation · Final report · Oct 19, 1996 · N7102F · Substantial damage > failure of the pilot to abort the takeoff after encountering excessive ground roll, and failure (or inability) of the pilot to obtain/maintain adequate airspeed, which resulted in an inadvertent stall. Factors relating to the accident were: restricted… - [NTSB CHI97LA011](https://openairdocs.org/ntsb/CHI97LA011.md): Aero Commander 685 · Eden, WI · Accident · Serious injuries · Limited investigation · Final report · Oct 19, 1996 · N58RG · Destroyed > a partial loss of engine power due to improper adjustment of the fuel pump by an unqualified person (pilot-in-command) and the pilot's inadequate preflight planning which resulted in his selection of unsuitable terrain for the attempted takeoff. The pilot's… - [NTSB CHI97LA006](https://openairdocs.org/ntsb/CHI97LA006.md): Callair B1A · Nebraska City, NE · Accident · Minor injuries · Limited investigation · Final report · Oct 9, 1996 · N6203X · Substantial damage > a supercharger bearing failure. A factor was the excessive sink rate during the forced landing. - [NTSB LAX97LA002](https://openairdocs.org/ntsb/LAX97LA002.md): Piper PA-28-140 · Plymouth, CA · Accident · No injuries · Limited investigation · Final report · Oct 3, 1996 · N5705U · Substantial damage > failure of the #3 exhaust valve, which resulted in loss of engine power, a forced landing, and subsequent collision with a fence post. - [NTSB ANC96FA162](https://openairdocs.org/ntsb/ANC96FA162.md): Cessna 206G · Anchorage, AK · Accident · 3 fatal · Field investigation · Final report · Sep 24, 1996 · N7312C · Destroyed > improper installation of a connecting bolt in the throttle linkage, which resulted in a worn/disconnected throttle arm, partial loss of engine power, and a forced landing after takeoff. - [NTSB CHI96FA348](https://openairdocs.org/ntsb/CHI96FA348.md): Cessna 172F · Saint Clair, MN · Accident · 1 fatal · Field investigation · Final report · Sep 22, 1996 · N5373R · Destroyed > a loss of power due to the engine's #2 cylinder exhaust valve stuck open, and the pilot's failure to maintain airspeed. - [NTSB FTW96LA388](https://openairdocs.org/ntsb/FTW96LA388.md): Schweizer G-164B · Ferriday, LA · Accident · No injuries · Limited investigation · Final report · Sep 17, 1996 · N8498K · Substantial damage > The partial loss of engine power due to a cracked cylinder head. Factors were the oil leak which restricted the pilot's visual lookout and the lack of suitable terrain for the forced landing. - [NTSB CHI96LA340](https://openairdocs.org/ntsb/CHI96LA340.md): Cessna 150 · Wonder Lake, IL · Accident · No injuries · Limited investigation · Final report · Sep 14, 1996 · N1381Q · Substantial damage > a blocked exhaust pipe as a result of an inadequate weld repair to the muffler. - [NTSB FTW96LA343](https://openairdocs.org/ntsb/FTW96LA343.md): Piper PA-28-180 · Midlothian, TX · Accident · Minor injuries · Limited investigation · Final report · Aug 9, 1996 · N2559R · Substantial damage > maintenance personnel's improper engine overhaul procedures resulting in the installation of the rocker arms in reversed positions, which led to improper lubrication and binding of the exhaust valves. A related factor was the lack of suitable terrain for the… - [NTSB LAX96LA299](https://openairdocs.org/ntsb/LAX96LA299.md): Grumman-Schweizer G-164A · Caruthers, CA · Accident · Minor injuries · Limited investigation · Final report · Aug 8, 1996 · N8598H · Substantial damage > the loss of engine power due to the failure of a cylinder. The road's soft surface was a factor. - [NTSB CHI96LA261](https://openairdocs.org/ntsb/CHI96LA261.md): Cessna 188B · Cimarron, KS · Accident · No injuries · Limited investigation · Final report · Jul 30, 1996 · N441Q · Substantial damage > the pilot's failure to make a timely decision to abort the takeoff or dump the payload. - [NTSB CHI96LA253](https://openairdocs.org/ntsb/CHI96LA253.md): Yasecko LONG-EZE · Waukesha, WI · Accident · No injuries · Limited investigation · Final report · Jul 24, 1996 · N303Y · Substantial damage > Failure of the throttle cable. - [NTSB SEA96LA155](https://openairdocs.org/ntsb/SEA96LA155.md): Grumman G-164A · New Plymouth, ID · Accident · No injuries · Limited investigation · Final report · Jul 15, 1996 · N48442 · Substantial damage > a cracked cylinder head, which resulted in partial loss of engine power during takeoff. Factors relating to the accident were: the pilot allowed the gross weight of the airplane to be exceeded, and tall wheat (crop) in the emergency landing area. - [NTSB FTW96LA297](https://openairdocs.org/ntsb/FTW96LA297.md): Wsk Pzl Mielec M-18A · Mcgehee, AR · Accident · No injuries · Limited investigation · Final report · Jul 10, 1996 · N80199 · Destroyed > a loss of engine power and subsequent engine fire for undetermined reasons. - [NTSB CHI96LA236](https://openairdocs.org/ntsb/CHI96LA236.md): Wsk Pzl Mielec M-18 Dromader · Waupaca, WI · Accident · No injuries · Limited investigation · Final report · Jul 10, 1996 · N2047S · Substantial damage > inadequate maintenance of the throttle cable by maintenance personnel. - [NTSB IAD96LA105](https://openairdocs.org/ntsb/IAD96LA105.md): Piper PA-23-250 · Harrisburg, PA · Accident · Minor injuries · Limited investigation · Final report · Jul 7, 1996 · N6994Y · Destroyed > Failure of the right engine due to a fatigue fracture of the crankshaft resultant from heat cracks from an undetermined source. - [NTSB SEA96LA144](https://openairdocs.org/ntsb/SEA96LA144.md): Hughes 369D · Mcminnville, OR · Accident · Minor injuries · Limited investigation · Final report · Jul 6, 1996 · N5110Y · Substantial damage > improper maintenance (replacement) and inspection of the engine fuel governor by company maintenance personnel, the pilot's inadequate preflight inspection, and a subsequent disconnect of the adjustable governor lever control rod, which disabled the engine… - [NTSB CHI96FA216](https://openairdocs.org/ntsb/CHI96FA216.md): Fairchild SA227AC · Grand Forks, ND · Accident · No injuries · Field investigation · Final report · Jun 25, 1996 · N2692P · Substantial damage > insufficient clearance between the second stage compressor impeller and the shroud. A factor was the subsequent fatigue failure of the impeller. - [NTSB ATL96FA095](https://openairdocs.org/ntsb/ATL96FA095.md): Piper PA-23-250 · Clanton, AL · Accident · 5 fatal · Field investigation · Final report · Jun 24, 1996 · N6937Y · Destroyed > corrosion pitting of the number six cylinder on the left engine, and subsequent fatigue fracture and separation of the cylinder, which led to an engine compartment fire, wing fire, and an in-flight separation of the left wing. - [NTSB IAD96LA087](https://openairdocs.org/ntsb/IAD96LA087.md): Bellanca 17-30A · New Market, VA · Accident · Minor injuries · Limited investigation · Final report · May 31, 1996 · N14765 · Substantial damage > a loss of engine power as a result of the failure of the left exhaust tailpipe and led to a shorted ignition system. A related factor was the unsuitable terrain in which the aircraft landed. - [NTSB LAX96LA210](https://openairdocs.org/ntsb/LAX96LA210.md): Rotorway Exec 9 · Chandler, AZ · Accident · No injuries · Limited investigation · Final report · May 22, 1996 · N89678 · Substantial damage > a loss of engine power due to a failed piston and piston ring in a critical phase of flight. - [NTSB MIA96LA142](https://openairdocs.org/ntsb/MIA96LA142.md): Piper PA-32 · Jacksonville, FL · Accident · Serious injuries · Limited investigation · Final report · May 20, 1996 · N9164B · Substantial damage > The pilot's failure to maintain airspeed (VSO) while maneuvering during a go-around, resulting in an inadvertent stall and subsequent in-flight collision with terrain. Contributing to the accident was the pilot's failure to achieve the proper touchdown point… - [NTSB NYC96LA105](https://openairdocs.org/ntsb/NYC96LA105.md): Grumman-Schweizer G-164A · Vineland, NJ · Accident · No injuries · Limited investigation · Final report · May 14, 1996 · N6620Q · Substantial damage > failure of the number 8 cylinder, which resulted in loss of engine power, a forced landing in soft terrain, and subsequent nose over of the airplane. - [NTSB MIA96GA138](https://openairdocs.org/ntsb/MIA96GA138.md): Wsk Pzl Mielec M18A · Kinston, NC · Accident · 1 fatal · Final report · May 11, 1996 · N2065K · Destroyed > a cracked/fractured #5 cylinder and subsequent failure/jamming of the #5 exhaust valve, which resulted in a partial loss of engine power; and failure of the pilot to maintain adequate airspeed, which resulted in a stall and collision with the terrain. Factors… - [NTSB CHI96FA146](https://openairdocs.org/ntsb/CHI96FA146.md): Cessna 421 · Bernard, IA · Accident · 3 fatal · Field investigation · Final report · Apr 29, 1996 · N341DA · Destroyed > the pilot's operation of the airplane with known deficiencies, subsequent loss of oil from the left engine, and the pilot's failure to maintain minimum controllable airspeed (VMC), while diverting to an alternate airport. Factors relating to the accident… - [NTSB LAX96LA180](https://openairdocs.org/ntsb/LAX96LA180.md): Cessna 320 · Mammoth Lakes, CA · Accident · No injuries · Limited investigation · Final report · Apr 28, 1996 · N5752X · Substantial damage > the partial failure of the right engine turbocharger wastegate butterfly valve to fully close due to mechanical binding and the low setting of its associated absolute pressure controller. A related factor was the high density altitude which reduced the… - [NTSB ANC96FA059](https://openairdocs.org/ntsb/ANC96FA059.md): Cessna 150 · Palmer, AK · Accident · 1 fatal · Field investigation · Final report · Apr 28, 1996 · N8115U · Destroyed > loss of engine power due to a malfunction of the airplane's magneto ignition system, and the pilot's failure to have an annual inspection performed. Factors relating to the accident were: the pilot's lack of recent experience and inadequate in-flight planning… - [NTSB LAX96LA167](https://openairdocs.org/ntsb/LAX96LA167.md): Maule M-5-235C · Lake Havasu Cty, AZ · Accident · No injuries · Limited investigation · Final report · Apr 14, 1996 · N9177E · Substantial damage > the pilot-owner's inadequate engine maintenance which resulted in a progressive ignition failure. Factors which contributed to the accident were the dark nighttime light condition and the presence of hidden obstructions in the forced landing area. - [NTSB CHI96LA132](https://openairdocs.org/ntsb/CHI96LA132.md): Siai-Marchetti S.205/22R · Anoka, MN · Accident · No injuries · Limited investigation · Final report · Apr 13, 1996 · N954W · Substantial damage > A loose exhaust system that had become disconnected and blocked, which resulted in partial loss of engine power. - [NTSB LAX96LA152](https://openairdocs.org/ntsb/LAX96LA152.md): Powell Glasair · Groveland, CA · Accident · 1 fatal · Limited investigation · Final report · Apr 2, 1996 · N59LP · Destroyed > the pilot's decision to fly the aircraft with a known mechanical discrepancy in the throttle linkage, which resulted in a partial loss of engine power; and his failure to maintain an adequate airspeed while maneuvering for an emergency landing, which resulted… - [NTSB IAD96LA049](https://openairdocs.org/ntsb/IAD96LA049.md): Kitfox IV-1200 · Saluda, VA · Accident · Minor injuries · Limited investigation · Final report · Mar 14, 1996 · N32495 · Substantial damage > a partial loss of engine power due to spark plug failure, and the pilot's evasive maneuver to avoid lights at the end of the runway. - [NTSB FTW96LA134](https://openairdocs.org/ntsb/FTW96LA134.md): Cessna 172N · Austin, TX · Accident · Serious injuries · Limited investigation · Final report · Feb 23, 1996 · N6601D · Substantial damage > the partial loss of engine power due to the failure of the #3 connecting rod. A factor was the lack of suitable terrain for the forced landing. - [NTSB MIA96LA095](https://openairdocs.org/ntsb/MIA96LA095.md): Rotor Flight Dynamics Dominator · Quincy, FL · Accident · No injuries · Limited investigation · Final report · Jan 18, 1996 · UNREG · Substantial damage > a partial loss of engine power due to fuel contamination, and the pilot-in-command's improper decision to land with a tailwind. - [NTSB FTW96LA098](https://openairdocs.org/ntsb/FTW96LA098.md): Cessna T210M · Las Vegas, NM · Accident · Minor injuries · Limited investigation · Final report · Jan 18, 1996 · N761KK · Substantial damage > failure of the throttle cable. A factor relating to the accident was: the lack of suitable terrain for a forced landing. - [NTSB CHI96LA072](https://openairdocs.org/ntsb/CHI96LA072.md): Cessna 150M · Mount Pleasant, MI · Accident · No injuries · Limited investigation · Final report · Jan 15, 1996 · N8375U · Substantial damage > the student pilot's inadequate preflight and the loose oil filler cap, which resulted in oil starvation and failure of the #1 cylinder connecting rod. A factor relating to this accident was the snow covered terrain. - [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 LAX96LA085](https://openairdocs.org/ntsb/LAX96LA085.md): Klingberg Miniplane DSA-1 · El Cajon, CA · Accident · 1 fatal · Limited investigation · Final report · Jan 7, 1996 · N66TD · Destroyed > the pilot's intentional operation of the aircraft with known mechanical deficiencies in the engine, and his failure to maintain an adequate airspeed while maneuvering for a forced landing, which resulted in an inadvertent stall/spin. - [NTSB LAX96IA087](https://openairdocs.org/ntsb/LAX96IA087.md): Boeing 747-251B · Los Angeles, CA · Incident · No injuries · Incident investigation · Final report · Jan 5, 1996 · N628US · Minor damage > The fatigue fracture of the number 4 bearing oil pressure tube due to an improper maintenance cleaning procedure by company maintenance personnel. - [NTSB FTW96LA078](https://openairdocs.org/ntsb/FTW96LA078.md): Piper PA-24-250 · Kaufman, TX · Accident · Serious injuries · Limited investigation · Final report · Dec 27, 1995 · N5221P · Substantial damage > The loss of engine power due to a bent push rod and the resultant loss of oil. Factors were the cockpit smoke and the lack of suitable terrain for the forced landing. - [NTSB FTW96LA077](https://openairdocs.org/ntsb/FTW96LA077.md): Stinson ST-108-2 · Lake Dallas, TX · Accident · Minor injuries · Limited investigation · Final report · Dec 27, 1995 · N135C · Destroyed > the failure of the #6 connecting rod assembly. A factor was the lack of suitable terrain for a forced landing which resulted in a water landing. - [NTSB LAX96FA080](https://openairdocs.org/ntsb/LAX96FA080.md): Cessna 152 · Compton, CA · Accident · Minor injuries · Field investigation · Final report · Dec 26, 1995 · N6110Q · Destroyed > a push rod failed from fatigue as a result of longitudinal stress corrosion cracking. - [NTSB ATL96FA021](https://openairdocs.org/ntsb/ATL96FA021.md): Mooney M20J · Bay Minette, AL · Accident · 2 fatal · Field investigation · Final report · Dec 14, 1995 · N3874H · Destroyed > failure of the alternate air door, which resulted in blockage of air through the induction system. A factor relating to the accident was: failure to comply with Safety Bulletin SB-M20-253. - [NTSB CHI96LA035](https://openairdocs.org/ntsb/CHI96LA035.md): Pzl-Mielec M-18A · Montrose, MI · Accident · No injuries · Limited investigation · Final report · Nov 20, 1995 · N2296J · Substantial damage > a loss of engine power as a result of the separation of the throttle push-pull cable. - [NTSB SEA96LA020](https://openairdocs.org/ntsb/SEA96LA020.md): Snow S2C · Dufer, OR · Accident · No injuries · Limited investigation · Final report · Nov 16, 1995 · N1694S · Substantial damage > A loss of engine power due to a cracked cylinder head. A factor was the evasive maneuver to avoid a ditch. - [NTSB LAX96LA041](https://openairdocs.org/ntsb/LAX96LA041.md): Cooke KR-2 · Watsonville, CA · Accident · 1 fatal · Limited investigation · Final report · Nov 7, 1995 · N57CC · Destroyed > partial loss of engine power for an undetermined reason, and failure of the pilot to maintain adequate airspeed, while maneuvering for an emergency landing, which resulted in an inadvertent stall and collision with the terrain. - [NTSB LAX96LA023](https://openairdocs.org/ntsb/LAX96LA023.md): Great Lakes 2T-1A-2 · Chandler, AZ · Accident · No injuries · Limited investigation · Final report · Oct 26, 1995 · N3808F · Substantial damage > the improper installation of an intake manifold tube assembly during engine overhaul which permitted leakage into the induction system resulting in detonation and piston failure in the associated cylinder. Next page: https://openairdocs.org/ntsb.md?occurrence=352&page=10 ## 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 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&page=9 --- 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.