# 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 14 of 29 · 1,408 cases

## Cases, newest first

- [NTSB MIA92FA099](https://openairdocs.org/ntsb/MIA92FA099.md): Piper PA-32-300 · Aberdeen, MS · Accident · 1 fatal · Field investigation · Final report · Mar 16, 1992 · N16388 · Destroyed
  > The pilot-in-command's decision to initiate a turn back to the airport at a low altitude following loss of engine power.
- [NTSB FTW92LA096](https://openairdocs.org/ntsb/FTW92LA096.md): Burnett Teenie II · Edmond, OK · Accident · Minor injuries · Limited investigation · Final report · Feb 29, 1992 · N5749 · Substantial damage
  > Partial engine power loss due to cylinder failure. A factor was the lack of suitable terrain for the forced landing.
- [NTSB LAX92LA124](https://openairdocs.org/ntsb/LAX92LA124.md): Cessna 150 · San Jose, CA · Accident · Minor injuries · Limited investigation · Final report · Feb 23, 1992 · N126NK · Destroyed
  > That the certified flight instructor's (CFI) misjudged approach which resulted in a long landing, the cfi's in-flight decision to a go-around with partial power, and the failure of the CFI to maintain aircraft control in the initial climb segment of the…
- [NTSB MIA92LA082](https://openairdocs.org/ntsb/MIA92LA082.md): Burch Rotorway Exec · Lakeland, FL · Accident · No injuries · Limited investigation · Final report · Feb 9, 1992 · N618VN · Substantial damage
  > The pilot-in-command's improper application of cyclic and collective pitch control during an autorotative landing. This resulted in a hard landing, collision of the main rotor blades with the tailboom, and subsequent roll over of the helicopter. Contributing…
- [NTSB FTW92LA056](https://openairdocs.org/ntsb/FTW92LA056.md): Cessna 205A · Spring, TX · Accident · No injuries · Limited investigation · Final report · Jan 14, 1992 · N8352Z · Substantial damage
  > The partial power loss due to cylinder fatigue and resultant engine vibrations. Factors were the oil covered windshield restricting the pilot's vision and the wet terrain.
- [NTSB LAX92FA092](https://openairdocs.org/ntsb/LAX92FA092.md): Cessna T210L · Temple Bar, AZ · Accident · 2 fatal · Field investigation · Final report · Jan 13, 1992 · N22592 · Destroyed
  > Fatigue failure of the turbocharger's turbine shaft due to inadequate maintenance, and the pilot's improper in-flight planning/decision after experiencing a turbocharger failure. A factor related to the accident was: the lack of information in the pilot…
- [NTSB LAX92LA080](https://openairdocs.org/ntsb/LAX92LA080.md): Cessna 150L · Fresno, CA · Accident · Serious injuries · Limited investigation · Final report · Jan 4, 1992 · N10828 · Substantial damage
  > The improper major repair of the carburetor heat control by unidentified persons that resulted the failure of the air intake distribution system and the loss of engine power.
- [NTSB DEN92LA017](https://openairdocs.org/ntsb/DEN92LA017.md): Stinson 108-1 · Longmont, CO · Accident · Minor injuries · Limited investigation · Final report · Dec 22, 1991 · N97962 · Destroyed
  > A loss of engine power due to fouled spark plugs. The inadequate maintenance of the engine was a factor in the accident.
- [NTSB CHI92LA052](https://openairdocs.org/ntsb/CHI92LA052.md): Cessna 172 · Carlyle, IL · Accident · Serious injuries · Limited investigation · Final report · Dec 11, 1991 · N8316X · Substantial damage
  > Fuel contamination and blockage of the carburetor, which restuled in fuel starvation. The high obstructions (trees) were a related factor.
- [NTSB MIA92LA039](https://openairdocs.org/ntsb/MIA92LA039.md): Piper PA-28-140 · Lawrenceville, GA · Accident · No injuries · Limited investigation · Final report · Dec 6, 1991 · N7411J · Destroyed
  > The separation of numbers 1,2, and 3 connecting rods for undetermined reasons resulting in loss of engine power.
- [NTSB MIA92LA033](https://openairdocs.org/ntsb/MIA92LA033.md): Grumman AA-1C · Lantana, FL · Accident · Minor injuries · Limited investigation · Final report · Nov 22, 1991 · N9783U · Substantial damage
  > The improper maintenance assembly and inspection of the throttle linkage which resulted in the throttle linkage becoming disconnected in flight and subsequent loss of engine power.
- [NTSB LAX92LA045](https://openairdocs.org/ntsb/LAX92LA045.md): Cessna 152 · Maricopa, AZ · Accident · No injuries · Limited investigation · Final report · Nov 14, 1991 · N5552M · Substantial damage
  > The cfi's inadequate supervision and his delayed remedial action. A factor was carburetor icing conditions.
- [NTSB LAX92LA020](https://openairdocs.org/ntsb/LAX92LA020.md): Piper PA28-161 · Chandler, AZ · Accident · No injuries · Limited investigation · Final report · Oct 20, 1991 · N8092A · Substantial damage
  > An engine malfunction produced by exhaust valves stuck in the open position. Contributing to the accident was an unsuitable landing area and a sign adjacent to the landing area.
- [NTSB SEA92LA006](https://openairdocs.org/ntsb/SEA92LA006.md): Cessna C-150M · Woodburn, OR · Accident · Minor injuries · Limited investigation · Final report · Oct 14, 1991 · N9263U · Substantial damage
  > A seized engine exhaust valve. Factors include rough terrain and a collapsed nose gear.
- [NTSB CHI92LA002](https://openairdocs.org/ntsb/CHI92LA002.md): Piper PA-12 · Roscoe, IL · Accident · Minor injuries · Limited investigation · Final report · Oct 7, 1991 · N2499M · Substantial damage
  > Operation of an aircraft with known deficiencies and deterioration/failure of the magneto(s). Factors related to the accident were: the lack of an annual inspection and non-compliance with an airworthiness directive (AD).
- [NTSB NYC91LA249](https://openairdocs.org/ntsb/NYC91LA249.md): Davis D1K · Chester, CT · Accident · No injuries · Limited investigation · Final report · Sep 29, 1991 · N158Y · Substantial damage
  > Improper maintenance on the engine which resulted in a power loss due to a stuck exhaust valve and subsequent forced landing in unsuitable terrain.
- [NTSB LAX91LA413](https://openairdocs.org/ntsb/LAX91LA413.md): Grumman G164A-450 · Queen Creek, AZ · Accident · Minor injuries · Limited investigation · Final report · Sep 29, 1991 · N16SS · Substantial damage
  > Failure of the engine cylinder, producing a loss of power. Contributing to the accident was the location of an irrigation ditch next to the landing area and a dark night light condition.
- [NTSB SEA91LA249](https://openairdocs.org/ntsb/SEA91LA249.md): Cessna 177 · Snohomish, WA · Accident · No injuries · Limited investigation · Final report · Sep 23, 1991 · N3314T · Substantial damage
  > The separation of the mixture control cable (core) resulting from separation of the adel clamp assembly and improper adjustment by maintenance personnel.
- [NTSB NYC91FA246](https://openairdocs.org/ntsb/NYC91FA246.md): Cessna 172P · West Chicago, IL · Accident · 2 fatal · Field investigation · Final report · Sep 21, 1991 · N65729 · Substantial damage
  > The pilot's improper in-flight decision to return to the airport following a loss of engine power at a low altitude. The pilot failed to maintain airspeed which resulted in an inadvertent stall at an altitude insufficient for recovery. Factors contributing to…
- [NTSB LAX91LA389](https://openairdocs.org/ntsb/LAX91LA389.md): Cessna 172P · Hesperia, CA · Accident · Serious injuries · Limited investigation · Final report · Sep 11, 1991 · N97564 · Substantial damage
  > A stuck exhaust valve due to the operator's non compliance with a manufacturers recommended service bulletin on the engine. Contributing to the accident was the lack of suitable terrain for a safe landing.
- [NTSB SEA91LA231](https://openairdocs.org/ntsb/SEA91LA231.md): Cessna 310F · Corvallis, OR · Accident · No injuries · Limited investigation · Final report · Sep 2, 1991 · N6788X · Substantial damage
  > A disconnected air induction line, and the pilot's inflight decision to execute a 180 degree turn back to the airport. His lack of experience in multi-engine aircraft, his overall lack of familiarity and lack of recent experience in the type aircraft were…
- [NTSB ATL91LA164](https://openairdocs.org/ntsb/ATL91LA164.md): Piper PA-23-160 · Stockbridge, GA · Accident · Serious injuries · Limited investigation · Final report · Aug 31, 1991 · N44PG · Substantial damage
  > The pilot's failure to maintain flying speed after experiencing a partial loss of engine power. Factors in this accident were, loose carburetors, annual inspection not performed, and pilot's lack of recent experience.
- [NTSB LAX91LA374](https://openairdocs.org/ntsb/LAX91LA374.md): Piper PA32R · San Diego, CA · Accident · No injuries · Limited investigation · Final report · Aug 27, 1991 · N9222K · Substantial damage
  > The pilot operating the aircraft with a known engine discrepancy that would cause the engine to lose power due to restriction to the exhaust system.
- [NTSB CHI91LA267](https://openairdocs.org/ntsb/CHI91LA267.md): Cessna 150M · Old Monroe, MO · Accident · No injuries · Limited investigation · Final report · Aug 16, 1991 · N2842V · Substantial damage
  > The separation of the throttle control cable. Contributing to the accident was the rough terrain on which a forced landing was made.
- [NTSB DEN91LA112](https://openairdocs.org/ntsb/DEN91LA112.md): Lars Avid Flyer · Colorado Spring, CO · Accident · No injuries · Limited investigation · Final report · Aug 10, 1991 · N49BP · Substantial damage
  > The pilot's delay in flaring the airplane. Factors were: (1) stuck piston rings and (2) the pilot's failure to use flaps.
- [NTSB CHI91DER13](https://openairdocs.org/ntsb/CHI91DER13.md): Bell 47G-3B-1 · Maple Grove, MN · Accident · No injuries · Final report · Aug 9, 1991 · N73998 · Substantial damage
  > The pilot's failure to maintain directional control of the helicopter during the forced landing. Related factors are the loss of engine power, loss of rotor RPM, the eroded compressor blades, the pilot's operation with known deficiencies in equipment and…
- [NTSB BFO91LA074](https://openairdocs.org/ntsb/BFO91LA074.md): Clifton Dixon Polliwagen · Chesterfield, VA · Accident · Minor injuries · Limited investigation · Final report · Aug 6, 1991 · N256PW · Destroyed
  > The partial loss of engine power caused by a misaligned rocker arm spring resulting in a reduction of exhaust valve opening.
- [NTSB DEN91LA105](https://openairdocs.org/ntsb/DEN91LA105.md): Fink, Charles H. FIN-1 · Albuquerque, NM · Accident · Minor injuries · Limited investigation · Final report · Jul 28, 1991 · N1033Y · Destroyed
  > A failure of the throttle system which prevented the pilot from achieving sufficient power to maintain flight. A factor was: the rough terrain.
- [NTSB CHI91DEP11](https://openairdocs.org/ntsb/CHI91DEP11.md): English Pietenpol Aircamper · Brodhead, WI · Accident · Serious injuries · Final report · Jul 27, 1991 · N14961 · Substantial damage
  > Erosion of an exhaust valve.
- [NTSB LAX91LA320](https://openairdocs.org/ntsb/LAX91LA320.md): Sikorsky SK-58 · Daggett, CA · Accident · No injuries · Limited investigation · Final report · Jul 22, 1991 · N58WH · Substantial damage
  > The failure of an engine connecting rod causing a reduction of engine power to the point where level flight could not be maintained. A factor in the accident was the dark night conditions which restricted the pilot's ability to select the best landing site.
- [NTSB SEA91LA190](https://openairdocs.org/ntsb/SEA91LA190.md): Fleet FL-80 · Havre, MT · Accident · Minor injuries · Limited investigation · Final report · Jul 20, 1991 · CFDPZ · Substantial damage
  > The engine driven fuel injection pump metering valve shaft was loose. A factor to the accident was: inadequate annual inspection.
- [NTSB LAX91LA323](https://openairdocs.org/ntsb/LAX91LA323.md): Cessna C-172P · Hesperia, CA · Accident · No injuries · Limited investigation · Final report · Jul 20, 1991 · N54694 · Substantial damage
  > A stuck engine throttle due to improper maintenance procedures.
- [NTSB ATL91LA125](https://openairdocs.org/ntsb/ATL91LA125.md): Piper PA-12 · Myrtle Beach, SC · Accident · No injuries · Limited investigation · Final report · Jul 8, 1991 · N4401M · Substantial damage
  > The failure of the number 4 cylinder exhaust valve. Factors in the accident were the lack of a suitable landing site and the water ditching.
- [NTSB ANC91LA095](https://openairdocs.org/ntsb/ANC91LA095.md): Cessna 150L · Fairbanks, AK · Accident · No injuries · Limited investigation · Final report · Jul 7, 1991 · N5321Q · Substantial damage
  > The partial loss of engine power resulting in a forced landing on unsuitable terrain and subsequent nose over during the landing roll. Contributing to the accident was the improperly performed 100 hour inspection by company maintenance personnel.
- [NTSB ANC91LA096](https://openairdocs.org/ntsb/ANC91LA096.md): De Havilland DHC-2 · King Salmon, AK · Accident · No injuries · Limited investigation · Final report · Jul 5, 1991 · N5538G · Substantial damage
  > The forced landing on the rough terrain and the engine power loss due to the failure of the engine collector intermediate bearings.
- [NTSB LAX91FA282](https://openairdocs.org/ntsb/LAX91FA282.md): Beech 65 · Pioneer, CA · Accident · 6 fatal · Field investigation · Final report · Jun 30, 1991 · N713JB · Destroyed
  > Improper emergency procedures by the pilot, when he inadvertently shut down the left engine after encountering a partial loss of power in the right engine. Factors related to the accident were: improper installation of the right engine's #6 exhaust valve seat…
- [NTSB SEA91LA139](https://openairdocs.org/ntsb/SEA91LA139.md): Cessna 180G · Challis, ID · Accident · Minor injuries · Limited investigation · Final report · Jun 22, 1991 · N4700U · Substantial damage
  > That the pilot encountered unsuitable terrain during a forced landing after a power loss due to a fractured cylinder boss and a bent engine pushrod.
- [NTSB FTW91LA106](https://openairdocs.org/ntsb/FTW91LA106.md): Rockwell 112TC · Ovilla, TX · Accident · Minor injuries · Limited investigation · Final report · Jun 21, 1991 · N4596W · Substantial damage
  > The mechanical failure of the turbocharger. Factors were the inadequate annual inspection and the pilot's improper flare in the forced landing.
- [NTSB LAX91LA265](https://openairdocs.org/ntsb/LAX91LA265.md): Glasair SH-2-RG · Visalia, CA · Accident · Minor injuries · Limited investigation · Final report · Jun 18, 1991 · N306AT · Substantial damage
  > Total loss of engine power due to the failure of the number 4 engine exhaust valve.
- [NTSB MIA91LA163](https://openairdocs.org/ntsb/MIA91LA163.md): Air Tractor 301 · Greenville, MS · Accident · No injuries · Limited investigation · Final report · Jun 14, 1991 · N2361C · Substantial damage
  > Loss of engine power due to a cracked cylinder and the pilot's inadvertent stall.
- [NTSB LAX91LA255](https://openairdocs.org/ntsb/LAX91LA255.md): Cessna 172N · Thermal, CA · Accident · Minor injuries · Limited investigation · Final report · Jun 8, 1991 · N6230D · Substantial damage
  > The partial failure of the engine/powerplant from a worn intake valve and the failure of company/operator management to perform an overhaul on the engine within the time frame recommended by the engine manufacturer.
- [NTSB SEA91LA128](https://openairdocs.org/ntsb/SEA91LA128.md): Enstrom F280C · Baggs, WY · Accident · No injuries · Limited investigation · Final report · Jun 7, 1991 · N5695Y · Substantial damage
  > Exhaust valve failure, resulting in a partial power loss. Contributing factors were low altitude and rough/uneven terrain.
- [NTSB NYC91IA137](https://openairdocs.org/ntsb/NYC91IA137.md): Boeing 727-214 · Boston, MA · Incident · No injuries · Incident investigation · Final report · Jun 6, 1991 · N750UA · Minor damage
  > The failure of the third stage turbine blade on the number two engine, due to high cycle fatigue.
- [NTSB MIA91LA158](https://openairdocs.org/ntsb/MIA91LA158.md): Air Tractor AT-301 · High Springs, FL · Accident · No injuries · Limited investigation · Final report · Jun 2, 1991 · N8841S · Substantial damage
  > Loss of engine power due to disintegration of the impeller caused by a worn impeller bearing.
- [NTSB FTW91DPG12](https://openairdocs.org/ntsb/FTW91DPG12.md): Bell 47-G3B1 · Colt, AR · Accident · Minor injuries · Final report · Jun 1, 1991 · N31052 · Destroyed
  > Loss of engine power for an undetermined reason. A factor was the unsuitable terrain.
- [NTSB LAX91LA229](https://openairdocs.org/ntsb/LAX91LA229.md): Glaser-Dirks DG-500M · Minden, NV · Accident · No injuries · Limited investigation · Final report · May 25, 1991 · N503V · Substantial damage
  > An engine failure produced as a result of the pilot improperly adjusting the carburetor mixture jet.
- [NTSB CHI91LA161](https://openairdocs.org/ntsb/CHI91LA161.md): Piper PA-22-160 · Mankato, MN · Accident · No injuries · Limited investigation · Final report · May 21, 1991 · N2906Z · Substantial damage
  > Partial loss of engine power due to an unlocked engine primer. Factors related to the accident were that the pre takeoff check list was not followed by the pilot and the lack of suitable terrain for the forced landing.
- [NTSB FTW91FA081](https://openairdocs.org/ntsb/FTW91FA081.md): Cessna 150J · Caney, OK · Accident · 2 fatal · Field investigation · Final report · May 18, 1991 · N1019M · Destroyed
  > Binding of the #2 exhaust valve (stuck valve), and failure of the pilot to maintain adequate airspeed, which resulted in an inadvertent stall. A factor related to the accident was: the failed exhaust manifold gasket.
- [NTSB ATL91LA095](https://openairdocs.org/ntsb/ATL91LA095.md): Beech 55 · Perry, GA · Accident · No injuries · Limited investigation · Final report · May 17, 1991 · N42WE · Substantial damage
  > Improper in-flight planning/decision by the pilot in command (CFI). The improper procedure of turning the fuel selector valve to 'off' at altitude to simulate a failed engine, then delaying restarting of the engine until the aircraft was on final approach was…
- [NTSB MIA91FA140](https://openairdocs.org/ntsb/MIA91FA140.md): Mcdonnell Douglas DC-3C · Aguadilla, PR · Accident · 2 fatal · Field investigation · Final report · May 10, 1991 · N134FS · Destroyed
  > The pilot in command's failure to maintain airspeed (vs) after a partial loss of engine power on the left engine due to failure of the no. 8 engine assembly cylinder. This resulted in an in flight loss of control (stall), and in flight collision with terrain.

Next page: https://openairdocs.org/ntsb.md?occurrence=352&page=15

## 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=14

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