# NTSB investigations: Loss of engine power(total) - 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 24 of 58 · 2,878 cases

## Cases, newest first

- [NTSB SEA94LA151](https://openairdocs.org/ntsb/SEA94LA151.md): Cessna 182Q · Indian Valley, ID · Accident · Minor injuries · Limited investigation · Final report · Jun 19, 1994 · N735QB · Substantial damage
  > Connecting rod bolt fatigue and no suitable terrain for the forced landing.
- [NTSB FTW94LA202](https://openairdocs.org/ntsb/FTW94LA202.md): Riley, Donald Rutan Varieze · Fort Lupton, CO · Accident · Serious injuries · Limited investigation · Final report · Jun 19, 1994 · N111DR · Destroyed
  > Blockage of the oil scavenge pump by foreign material which was introduced into the engine during maintenance. A factor was the lack of suitable terrain for the forced landing.
- [NTSB CHI94LA206](https://openairdocs.org/ntsb/CHI94LA206.md): Piper PA-28 · St. Joseph, MO · Accident · No injuries · Limited investigation · Final report · Jun 17, 1994 · N5025S · Substantial damage
  > the loss of engine power due to the failure of the number two cylinder.
- [NTSB BFO94LA100](https://openairdocs.org/ntsb/BFO94LA100.md): Robinson R-22 · Raynham, MA · Accident · No injuries · Limited investigation · Final report · Jun 15, 1994 · N8029Z · Substantial damage
  > Failure of the number four cylinder piston rings.
- [NTSB ATL94LA120](https://openairdocs.org/ntsb/ATL94LA120.md): Beech P35 · Bluffton, SC · Accident · No injuries · Limited investigation · Final report · Jun 12, 1994 · N982Q · Substantial damage
  > A loss of engine power due to oil starvation. This resulted from an undertorqued condition of the oil filter adapter, and the subsequent fretting of the adapter threads.
- [NTSB SEA94LA136](https://openairdocs.org/ntsb/SEA94LA136.md): Ayres S2R · Burley, ID · Accident · No injuries · Limited investigation · Final report · Jun 2, 1994 · N8542 · Substantial damage
  > A loose carburetor. Factors include no suitable terrain for making a forced landing, and trees in the field where the forced landing took place.
- [NTSB CHI94DEM01](https://openairdocs.org/ntsb/CHI94DEM01.md): Grumman G-164A · Muskegon, MI · Accident · No injuries · Final report · Jun 2, 1994 · N8939H · Substantial damage
  > The propeller not being able to be feathered by the pilot, inadequate altitude for a successful forced landing, and the failure of the combustion section. A factor associated with this accident was the stall/mush encountered by the pilot due to the…
- [NTSB LAX94LA233](https://openairdocs.org/ntsb/LAX94LA233.md): Piper PA-28R-201T · Trinity Center, CA · Accident · Minor injuries · Limited investigation · Final report · Jun 1, 1994 · N36025 · Substantial damage
  > the fatigue fracture of the crankshaft due to improper maintenance installation of the number 1 cylinder and the inadequate torquing of the case through bolts at that location.
- [NTSB SEA94LA135](https://openairdocs.org/ntsb/SEA94LA135.md): Piper PA-25-260 · Rexburg, ID · Accident · Serious injuries · Limited investigation · Final report · May 28, 1994 · N4842Y · Substantial damage
  > Engine failure after loss of oil due to a ruptured oil line.
- [NTSB ANC94LA061](https://openairdocs.org/ntsb/ANC94LA061.md): Piper PA-20 · Anchorage, AK · Accident · No injuries · Limited investigation · Final report · May 28, 1994 · N6174D · Substantial damage
  > The failure of an exhaust valve. The lack of suitable terrain for a forced landing was a factor.
- [NTSB CHI94LA177](https://openairdocs.org/ntsb/CHI94LA177.md): Piper PA-28R-201T · Bolivar, MO · Accident · No injuries · Limited investigation · Final report · May 27, 1994 · N3191Q · Substantial damage
  > the failure of a pressure fuel line. A factor was the encountering of unsuitable terrain during a forced landing.
- [NTSB FTW94LA181](https://openairdocs.org/ntsb/FTW94LA181.md): Mooney M20J · Willcox, AZ · Accident · No injuries · Limited investigation · Final report · May 26, 1994 · N50105 · Substantial damage
  > The failure of the connecting rod due to lack of lubrication. Factors were the previous damage to the engine, and the unsuitable terrain at the pilot's disposal for the forced landing.
- [NTSB FTW94LA177](https://openairdocs.org/ntsb/FTW94LA177.md): Grumman G-164B · Casscoe, AR · Accident · Minor injuries · Limited investigation · Final report · May 24, 1994 · N48386 · Destroyed
  > The inadvertent stall and power loss for undetermined reasons. A factor was the lack of suitable terrain for the forced landing.
- [NTSB MIA94LA147](https://openairdocs.org/ntsb/MIA94LA147.md): Ercoupe 415D · Boynton Beach, FL · Accident · Minor injuries · Limited investigation · Final report · May 22, 1994 · N93763 · Substantial damage
  > Inadvertent use of the mixture control while on final approach to land. Contributing to the accident was the separation of the mixture control cable from the carburetor.
- [NTSB FTW94LA175](https://openairdocs.org/ntsb/FTW94LA175.md): Bellanca 17-30A · Del Rio, TX · Accident · Minor injuries · Limited investigation · Final report · May 20, 1994 · N14773 · Substantial damage
  > Fuel starvation induced power loss due to an exhaust system leak resulting in an electrical system inflight fire in the area of the fuel pump. A factor was the lack of suitable terrain for the forced landing.
- [NTSB FTW94LA166](https://openairdocs.org/ntsb/FTW94LA166.md): Bell 47G · Sulphur, OK · Accident · No injuries · Limited investigation · Final report · May 18, 1994 · N933B · Substantial damage
  > The loss of engine power due to the failure of an engine accessory oil pump gear. A factor was the lack of suitable terrain for the autorotation.
- [NTSB FTW94LA164](https://openairdocs.org/ntsb/FTW94LA164.md): Aero Commander S2R · Monticello, AR · Accident · No injuries · Limited investigation · Final report · May 17, 1994 · N4080X · Substantial damage
  > The loss of engine power due to the number 2 cylinder cracking. A factor was the lack of suitable terrain for the forced landing.
- [NTSB LAX94LA219](https://openairdocs.org/ntsb/LAX94LA219.md): Cessna 172N · Arvin, CA · Accident · Minor injuries · Limited investigation · Final report · May 16, 1994 · N738VE · Substantial damage
  > a fatigue failure of the crankshaft gear teeth.
- [NTSB LAX94LA213](https://openairdocs.org/ntsb/LAX94LA213.md): Schweizer G-164B · Gridley, CA · Accident · No injuries · Limited investigation · Final report · May 8, 1994 · N3629E · Substantial damage
  > a loss of engine power due to a cracked engine cylinder head.
- [NTSB SEA94LA116](https://openairdocs.org/ntsb/SEA94LA116.md): Aero Commander S2R · Dayton, WA · Accident · No injuries · Limited investigation · Final report · May 7, 1994 · N5646X · Substantial damage
  > Total failure of the connecting rod.
- [NTSB CHI94LA147](https://openairdocs.org/ntsb/CHI94LA147.md): Air Tractor AT-402 · Sikeston, MO · Accident · No injuries · Limited investigation · Final report · May 5, 1994 · N91966 · Substantial damage
  > a fatigue failure of a compressor blade which resulted in a catostrophic engine failure.
- [NTSB ATL94IA097](https://openairdocs.org/ntsb/ATL94IA097.md): Douglas DC-9-32 · Memphis, TN · Incident · No injuries · Incident investigation · Final report · May 5, 1994 · N986US · Minor damage
  > The fatigue fracture of the combustion chamber outer case. A factor was the manufacturer's inadequate inspection criteria.
- [NTSB FTW94FA141](https://openairdocs.org/ntsb/FTW94FA141.md): Mooney M20E · Broomfield, CO · Accident · 2 fatal · Field investigation · Final report · May 1, 1994 · N1905Y · Destroyed
  > Fatigue failure of the engine crankshaft; and failure of the pilot to maintain adequate airspeed, while maneuvering to land, which resulted in a stall and collision with the terrain. Factors related to the accident were: the undesirable engine/propeller…
- [NTSB FTW94LA133](https://openairdocs.org/ntsb/FTW94LA133.md): Laurel Aero Club Cassutt III M · Strasburg, CO · Accident · Minor injuries · Limited investigation · Final report · Apr 22, 1994 · N8871 · Substantial damage
  > The pilot's failure to attain the proper touchdown point. Factors were: a power failure due to a sheared accessory drive gear, excessive airspeed and altitude, and a soft field.
- [NTSB LAX94FA197](https://openairdocs.org/ntsb/LAX94FA197.md): Hughes 369D · Hanapepe, HI · Accident · 1 fatal · Field investigation · Final report · Apr 18, 1994 · N1103N · Destroyed
  > Inadequate turbine engine compressor cleaning procedures based on information in the manufacturer's service letter, and loss of engine power due to blockage of the fuel nozzle strainer with foreign material (sodium). Factors related to the accident were: the…
- [NTSB LAX94LA200](https://openairdocs.org/ntsb/LAX94LA200.md): Bell 47G-3B-1 · Yuma, AZ · Accident · No injuries · Limited investigation · Final report · Apr 17, 1994 · N304JP · Substantial damage
  > an uncommanded engine deceleration to idle due to the improper installation of the throttle arm on the carburetor shaft.
- [NTSB SEA94LA099](https://openairdocs.org/ntsb/SEA94LA099.md): Luscombe 8E · Coalville, UT · Accident · No injuries · Limited investigation · Final report · Apr 13, 1994 · N2728K · Substantial damage
  > The failure of the connecting rod. Factors include the rough uneven terrain encountered during the forced landing.
- [NTSB ATL94LA079](https://openairdocs.org/ntsb/ATL94LA079.md): Cessna 150 · Hazel Green, AL · Accident · No injuries · Limited investigation · Final report · Apr 11, 1994 · N11560 · Substantial damage
  > The loss of engine power when the fractured piece of the rocker boss interrupted the normal operation of a movable component under the valve cover. A factor was the soft terrain in the landing area.
- [NTSB MIA94LA117](https://openairdocs.org/ntsb/MIA94LA117.md): Piper PA-28R-200 · River Ranch, FL · Accident · No injuries · Limited investigation · Final report · Apr 10, 1994 · N1395T · Substantial damage
  > The improper inspection of the worn throttle linkage connection at the fuel control, which resulted in the linkage becoming disconnected from the fuel control in flight and the engine losing power. This resulted in the aircraft colliding with a ditch during a…
- [NTSB LAX94LA178](https://openairdocs.org/ntsb/LAX94LA178.md): North American P-51D · Chino, CA · Accident · Minor injuries · Limited investigation · Final report · Apr 5, 1994 · N1451D · Destroyed
  > the pilot's decision to fly an unairworthy and uncertificated airplane, his failure to perform an adequate preflight, and the improper installation of the oil cooler lines.
- [NTSB FTW94LA110](https://openairdocs.org/ntsb/FTW94LA110.md): Bell 206B · Belen, NM · Accident · No injuries · Limited investigation · Final report · Mar 27, 1994 · N2779B · Substantial damage
  > The hard landing due to a delayed flare and improper touchdown. A factor was the loss of engine power.
- [NTSB CHI94LA121](https://openairdocs.org/ntsb/CHI94LA121.md): Piper PA-32-300 · Ellsworth, NE · Accident · No injuries · Limited investigation · Final report · Mar 21, 1994 · N5251S · Substantial damage
  > the jammed impulse coupling on the left magneto which caused the crankshaft drive gear to shear from the crankshaft.
- [NTSB NYC94LA069](https://openairdocs.org/ntsb/NYC94LA069.md): Piper PA-28-180 · Batavia, OH · Accident · No injuries · Limited investigation · Final report · Mar 20, 1994 · N1152X · Substantial damage
  > The loss of engine power as the result of a fractured cylinder head.
- [NTSB SEA94FA085](https://openairdocs.org/ntsb/SEA94FA085.md): Douglas DC-3C · Spokane, WA · Accident · 2 fatal · Field investigation · Final report · Mar 18, 1994 · N3433Y · Destroyed
  > The failure of the pilot-in-command to maintain airspeed. Factors to the accident were: cylinder fatigue, dark night and stall encountered.
- [NTSB NYC94LA058](https://openairdocs.org/ntsb/NYC94LA058.md): Piper PA-28RT-201T · Warfordsburg, PA · Accident · No injuries · Limited investigation · Final report · Mar 15, 1994 · N8335X · Substantial damage
  > The engine failure as a result of a main bearing shift and restricted lubrication, and the lack of suitable terrain for a forced landing.
- [NTSB ATL94LA064](https://openairdocs.org/ntsb/ATL94LA064.md): Cessna 152 · Lebanon, TN · Accident · No injuries · Limited investigation · Final report · Mar 15, 1994 · N95010 · Substantial damage
  > The student pilot's failure to follow the flight instructor's instructions to abort the takeoff after the airplane failed to develop takeoff power. The student pilot also delayed in relinquishing the flight control of the airplane to the flight instructor. A…
- [NTSB ATL94LA061](https://openairdocs.org/ntsb/ATL94LA061.md): Piper PA-22-160 · Columbia, SC · Accident · No injuries · Limited investigation · Final report · Mar 12, 1994 · N8647D · Substantial damage
  > The poor inspection of the aircraft during the annual inspection by maintenance personnel. A factor in the accident was the foreign object found in the carburetor bowl.
- [NTSB LAX94LA158](https://openairdocs.org/ntsb/LAX94LA158.md): Rockwell S-2R · Tacna, AZ · Accident · Minor injuries · Limited investigation · Final report · Mar 11, 1994 · N4977X · Substantial damage
  > a catastrophic internal engine failure for undetermined reasons. A factor in the accident was the dark nighttime lighting conditions.
- [NTSB SEA94LA072](https://openairdocs.org/ntsb/SEA94LA072.md): Grumman G-164 · Walla Walla, WA · Accident · No injuries · Limited investigation · Final report · Mar 2, 1994 · N6612Q · Substantial damage
  > Unsuitable terrain for a forced landing after a loss of power due to a failed engine cylinder. Factors include a partial magneto failure.
- [NTSB ANC94FA036](https://openairdocs.org/ntsb/ANC94FA036.md): Lockheed L-1011 · Fairbanks, AK · Accident · No injuries · Field investigation · Final report · Mar 1, 1994 · N303EA · Substantial damage
  > Failure of the sixth stage disc on the intermediate compressor stage 6/7TH rotor shaft assembly in the number three engine, due to corrosion pitting and fatigue cracking of the failed disc. A factor related to the accident was: failure of the airline company…
- [NTSB ATL94LA054](https://openairdocs.org/ntsb/ATL94LA054.md): Helio HE391B · Saluda, SC · Accident · No injuries · Limited investigation · Final report · Feb 26, 1994 · N9050R · Substantial damage
  > The pilot's and mechanic's failure to adequately inspect the aircraft fuel system which resulted in fuel starvation.
- [NTSB FTW94LA089](https://openairdocs.org/ntsb/FTW94LA089.md): Mooney M20J · Gallup, NM · Accident · No injuries · Limited investigation · Final report · Feb 24, 1994 · N201SX · Substantial damage
  > The loss of engine power due to the failure of the number 3 exhaust valve. A factor was the lack of suitable terrain available to execute the forced landing.
- [NTSB LAX94LA133](https://openairdocs.org/ntsb/LAX94LA133.md): Schweizer G-164B · Clarksburg, CA · Accident · No injuries · Limited investigation · Final report · Feb 23, 1994 · N36265 · Substantial damage
  > The total failure of the no. 1 cylinder due to fatigue resulting from an improperly adjusted mixture causing detonation. The soft, wet plowed field was a factor in this accident.
- [NTSB ATL94LA053](https://openairdocs.org/ntsb/ATL94LA053.md): Cessna T210R · Baxley, GA · Accident · No injuries · Limited investigation · Final report · Feb 23, 1994 · N7793U · Substantial damage
  > Damage to the crankshaft internal oil tube by other maintenance persons during the engine overhaul that resulted in oil starvation.
- [NTSB BFO94LA044](https://openairdocs.org/ntsb/BFO94LA044.md): Cessna 172 · East Newport, ME · Accident · No injuries · Limited investigation · Final report · Feb 20, 1994 · N100DF · Substantial damage
  > Improper engine maintenance by the operator resulting in oil exhaustion and subsequent internal engine damage.
- [NTSB CHI94LA091](https://openairdocs.org/ntsb/CHI94LA091.md): Cessna 150M · La Crosse, WI · Accident · No injuries · Limited investigation · Final report · Feb 18, 1994 · N704CE · Substantial damage
  > The failure of the exhaust valve in the number one cylinder. The lack of suitable terrain for the forced landing was a factor in the accident.
- [NTSB BFO94LA038](https://openairdocs.org/ntsb/BFO94LA038.md): Piper PA-32R-300 · Norfolk, VA · Accident · No injuries · Limited investigation · Final report · Feb 7, 1994 · N38780 · Substantial damage
  > Fatigue failure of the engine mounting bolt which resulted in loss of engine power and subsequent on ground collision with the terrain.
- [NTSB MIA94FA064](https://openairdocs.org/ntsb/MIA94FA064.md): Cessna T210M · Prentiss, MS · Accident · 2 fatal · Field investigation · Final report · Feb 3, 1994 · N6572M · Destroyed
  > A total loss of engine power due to the number five piston crown structure sustaining detonation/pre-ignition damage for undetermined reasons. The number two connecting rod and rod bolts failed due to an oil distress event. This resulted in a subsequent…
- [NTSB MIA94LA052](https://openairdocs.org/ntsb/MIA94LA052.md): Cessna 152 · Osprey, FL · Accident · No injuries · Limited investigation · Final report · Jan 21, 1994 · N68411 · Substantial damage
  > Unsuitable terrain encountered during the forced landing following fatigue failure of the crankshaft during cruise flight.
- [NTSB ATL94LA041](https://openairdocs.org/ntsb/ATL94LA041.md): Cessna T210N · Hayesville, NC · Accident · No injuries · Limited investigation · Final report · Jan 20, 1994 · N6191N · Substantial damage
  > The fatigue failure of no. 2 exhaust valve which resulted from excessive heat and wear to the valve stem. A factor was the dark night.

Next page: https://openairdocs.org/ntsb.md?occurrence=351&page=25

## 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" = 351)
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?occurrence=351&page=24

---
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.