# NTSB investigations, CA: 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 1 of 4 · 168 cases

## Latest cases

- [NTSB SEA07LA170](https://openairdocs.org/ntsb/SEA07LA170.md): Piper PA-28-161 · Redlands, CA · Accident · No injuries · Limited investigation · Final report · Jun 10, 2007 · N130RJ · Substantial damage
  > The restriction of the carburetor float as a result of a misadjusted retractor clip. A contributing factor was the fire.
- [NTSB LAX07LA179](https://openairdocs.org/ntsb/LAX07LA179.md): Cessna TU206G · Napa, CA · Accident · Minor injuries · Limited investigation · Final report · May 28, 2007 · N7395C · Substantial damage
  > Failure of the number 5 connecting rod due to oil starvation.
- [NTSB ENG07IA018](https://openairdocs.org/ntsb/ENG07IA018.md): Learjet · Palm Springs, CA · Incident · No injuries · Incident investigation · Final report · Mar 31, 2007 · N244FX · Minor 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 LAX07LA040](https://openairdocs.org/ntsb/LAX07LA040.md): Stinson 108-1 · San Jose, CA · Accident · No injuries · Limited investigation · Final report · Nov 20, 2006 · N97949 · Substantial damage
  > Partial loss of engine power due to a seized exhaust valve during cruise flight. Rough terrain at the forced landing site was a contributing factor.
- [NTSB LAX07FA035](https://openairdocs.org/ntsb/LAX07FA035.md): Cessna 421B · Big Bear Lake, CA · Accident · 3 fatal · Field investigation · Final report · Nov 14, 2006 · N642BD · Destroyed
  > Failure of the turbine wheel shaft in the left turbocharger during the takeoff initial climb for undetermined reasons, and the pilot's failure to attain and maintain safe single engine airspeed that led to a loss of control.
- [NTSB LAX07LA022](https://openairdocs.org/ntsb/LAX07LA022.md): Fish Vans RV-6 · Turlock, CA · Accident · Serious injuries · Limited investigation · Final report · Oct 28, 2006 · N1198N · Substantial damage
  > a partial loss of engine power due to the broken piston rings in the no. 4 cylinder. Also causal was the pilot's failure to maintain adequate airspeed while maneuvering for a forced landing, which resulted in a stall/mush.
- [NTSB LAX06LA230](https://openairdocs.org/ntsb/LAX06LA230.md): Cessna 152 · Pacoima, CA · Accident · Minor injuries · Limited investigation · Final report · Jul 14, 2006 · N25512 · Substantial damage
  > a loss of engine power due to the failure of maintenance personnel to tighten the top spark plugs, and install the leads for the ignition harness to the top spark plugs.
- [NTSB LAX06CA191](https://openairdocs.org/ntsb/LAX06CA191.md): Piper PA-28R-200 · Alpine, CA · Accident · No injuries · Data collection · Final report · Jun 4, 2006 · N4438T · Substantial damage
  > a loss of engine power due to the aviation maintenance technician's failure to install the correct oil sump quick drain, which resulted in the inadvertent draining of engine oil during flight.
- [NTSB LAX06CA088](https://openairdocs.org/ntsb/LAX06CA088.md): Huntington KIS · Camarillo, CA · Accident · Serious injuries · Data collection · Final report · Jan 10, 2006 · N506RJ · Substantial damage
  > a partial loss of engine power due to the engine's electronic control system reverting to a designed reduced power mode of operation.
- [NTSB LAX06CA035](https://openairdocs.org/ntsb/LAX06CA035.md): Vans RV-4 · Apple Valley, CA · Accident · No injuries · Data collection · Final report · Nov 12, 2005 · N14GK · Substantial damage
  > a partial loss of engine power for undetermined reasons.
- [NTSB LAX05FA296](https://openairdocs.org/ntsb/LAX05FA296.md): Cessna 152 · Lakewood, CA · Accident · 2 fatal · Field investigation · Final report · Sep 11, 2005 · N6565L · Destroyed
  > the certified flight instructor's failure to maintain an adequate airspeed resulting in a stall and loss of control. Also causal was the engine's loss of partial power due to inadequate maintenance, worn spark plugs, worn pistons, and broken piston rings.
- [NTSB LAX05CA285](https://openairdocs.org/ntsb/LAX05CA285.md): Bellanca 7ECA · Malibu, CA · Accident · No injuries · Data collection · Final report · Sep 1, 2005 · N2686Z · Substantial damage
  > a partial loss of engine power for undetermined reasons.
- [NTSB LAX05LA173](https://openairdocs.org/ntsb/LAX05LA173.md): Great Lakes 2T-1A-2 · Sonoma, CA · Accident · Minor injuries · Limited investigation · Final report · May 14, 2005 · N765GL · Substantial damage
  > a partial loss of engine power, which resulted from the fuel servo leaking and generating an excessively rich fuel/air mixture. A factor was the owner's failure to comply with a service bulletin.
- [NTSB LAX05LA165](https://openairdocs.org/ntsb/LAX05LA165.md): Grumman G-164C · Willows, CA · Accident · No injuries · Limited investigation · Final report · May 8, 2005 · N6535K · Substantial damage
  > the loss of engine power due to the fractured piston pin boss on the number 5 cylinder.
- [NTSB LAX05LA152](https://openairdocs.org/ntsb/LAX05LA152.md): Grumman G-164A · Yuba City, CA · Accident · No injuries · Limited investigation · Final report · Apr 30, 2005 · N5304 · Substantial damage
  > a partial loss of engine power due to multiple cracks in the number 7 cylinder. The reasons for the cracks were not determined
- [NTSB LAX05LA141](https://openairdocs.org/ntsb/LAX05LA141.md): Bailey Lowing Loadster · Bakersfield, CA · Accident · Serious injuries · Limited investigation · Final report · Apr 20, 2005 · N8058Q · Substantial damage
  > the loss of engine power for undetermined reasons.
- [NTSB LAX05LA057](https://openairdocs.org/ntsb/LAX05LA057.md): Orr Long-Ez · Yucca Valley, CA · Accident · No injuries · Limited investigation · Final report · Dec 31, 2004 · N321EZ · Substantial damage
  > a loss of engine power due to ignition system failure due to rain water grounding/shorting of the magneto switches.
- [NTSB LAX05LA042](https://openairdocs.org/ntsb/LAX05LA042.md): Piper PA-22-108 · Big Pine, CA · Accident · No injuries · Limited investigation · Final report · Nov 28, 2004 · N4913Z · Substantial damage
  > oil exhaustion due to an improper oil breather tube installation, which became plugged in flight due to frozen moisture build-up. The blocked breather tube then created a crankcase over pressure that caused a failure of the crankshaft seal. The rough, uneven…
- [NTSB LAX04LA267](https://openairdocs.org/ntsb/LAX04LA267.md): Schweizer G-164B · Richvale, CA · Accident · No injuries · Limited investigation · Final report · Jun 7, 2004 · N3626T · Substantial damage
  > the loss of engine power during takeoff due to the engine's deteriorated fuel control unit's inner drive shaft bearing. The reason for the bearing's deteriorated condition could not be determined.
- [NTSB LAX04FA187](https://openairdocs.org/ntsb/LAX04FA187.md): Piper PA-28RT-201T · Concord, CA · Accident · Serious injuries · Field investigation · Final report · Apr 13, 2004 · N2920C · Destroyed
  > a loss of engine power due to improper maintenance repair procedures and use of improper parts.
- [NTSB LAX04LA170](https://openairdocs.org/ntsb/LAX04LA170.md): Cessna 188B · Planada, CA · Accident · No injuries · Limited investigation · Final report · Mar 25, 2004 · N478Q · Destroyed
  > the partial loss of engine power due to the separation of the number 5 cylinder fuel injector supply line. The fuel line separation was due to company maintenance personnel's failure to secure the b-nut fitting following maintenance. Factors in the accident…
- [NTSB LAX03LA059](https://openairdocs.org/ntsb/LAX03LA059.md): Farmer R B DA5-A · Apple Valley, CA · Accident · Serious injuries · Limited investigation · Final report · Jan 4, 2003 · N7053U · Substantial damage
  > the detonation of the number 1 and 3 cylinders and the subsequent over temperature of those cylinders and their corresponding pistons.
- [NTSB LAX03LA004](https://openairdocs.org/ntsb/LAX03LA004.md): Rans S-12 XL · Los Banos, CA · Accident · No injuries · Limited investigation · Final report · Oct 9, 2002 · UNREG · Substantial damage
  > The loss of engine power for undetermined reasons and his failure to maintain adequate airspeed resulting in a stall. A contributing factor was the pilot's decision to conduct a downwind takeoff.
- [NTSB LAX03GA001](https://openairdocs.org/ntsb/LAX03GA001.md): McDonnell Douglas 600N · Rialto, CA · Accident · Serious injuries · Final report · Oct 4, 2002 · N625SB · Substantial damage
  > an engine deceleration event due to a loose HMU fuel line fitting, which was a result of inadequate maintenance procedures in the 100/300-hour inspection. Also causal was the flying pilot's and pilot-in-command's delayed recognition of the power loss, as well…
- [NTSB LAX02LA249](https://openairdocs.org/ntsb/LAX02LA249.md): Arns Spacewalker II · Irvine, CA · Accident · Minor injuries · Limited investigation · Final report · Aug 10, 2002 · N185MD · Substantial damage
  > Loss of engine power due to an exhaust system leak and vapor lock.
- [NTSB LAX02LA218](https://openairdocs.org/ntsb/LAX02LA218.md): Bell 47G-2 · Compton, CA · Accident · No injuries · Limited investigation · Final report · Jul 7, 2002 · N2483B · Substantial damage
  > the failure and separation of a fan belt for the engine cooling system. A factor in the accident was the inadequate annual inspection 14 hours prior to the accident.
- [NTSB LAX02LA172](https://openairdocs.org/ntsb/LAX02LA172.md): Cessna 172K · Lake Thomas A., CA · Accident · Serious injuries · Limited investigation · Final report · May 24, 2002 · N79944 · Substantial damage
  > a partial loss of engine power due to the partial malfunction of the left magneto and leakage of the ignition leads for that magneto, due to inadequate maintenance inspections. Factors in the accident include the high density altitude, the maintenance…
- [NTSB LAX02FA148](https://openairdocs.org/ntsb/LAX02FA148.md): Beech C23 · Oak Shores, CA · Accident · 3 fatal · Field investigation · Final report · Apr 28, 2002 · N9180S · Destroyed
  > the number 1 cylinder exhaust valve fractured and separated resulting in a loss of engine power and an off airport forced landing. A finding in the accident was the owner's failure to maintain the engine in accordance with the manufacturer's recommendations.
- [NTSB LAX02LA136](https://openairdocs.org/ntsb/LAX02LA136.md): Cessna 172 · Lake Los Angele, CA · Accident · Minor injuries · Limited investigation · Final report · Apr 15, 2002 · N211CA · Substantial damage
  > a reconditioned engine cylinder barrel failure due to previous rust damage and improper maintenance practices.
- [NTSB LAX02LA006](https://openairdocs.org/ntsb/LAX02LA006.md): Stinson 108-3 · Rosamond, CA · Accident · Minor injuries · Limited investigation · Final report · Oct 14, 2001 · N735C · Substantial damage
  > The pilot's failure to attain sufficient airspeed during the attempted takeoff, which resulted in a stall/mush. The airplane's failure to accelerate was due to a disintegrated bearing on the camshaft. The pilot's failure to make a timely abort decision was a…
- [NTSB LAX01FA199](https://openairdocs.org/ntsb/LAX01FA199.md): Piper PA-28-180 · Big Bear City, CA · Accident · 1 fatal · Field investigation · Final report · Jun 4, 2001 · N5413S · Destroyed
  > the student pilot's selection of a takeoff runway conducive to a tailwind weather condition and his failure to maintain airspeed and his inadvertent stall during takeoff initial climb. Factors in the accident were the partial loss engine power resulting from…
- [NTSB LAX01LA195](https://openairdocs.org/ntsb/LAX01LA195.md): Schweizer G-164B · Butte City, CA · Accident · Serious injuries · Limited investigation · Final report · May 31, 2001 · N6902K · Substantial damage
  > a fatigue failure of a propeller bolt.
- [NTSB LAX01LA161](https://openairdocs.org/ntsb/LAX01LA161.md): Taylor Bandit · Marysville, CA · Accident · Serious injuries · Limited investigation · Final report · Apr 28, 2001 · N8057T · Destroyed
  > The pilot performed an inadequate preflight inspection resulting in a loss of engine power at a low altitude because of water contamination.
- [NTSB LAX01LA050](https://openairdocs.org/ntsb/LAX01LA050.md): Cessna 182J · Paradise, CA · Accident · Serious injuries · Limited investigation · Final report · Dec 3, 2000 · N182DD · Substantial damage
  > Fuel exhaustion during a descent due to an inadequate fuel supply. Contributing factors were the pilot's improper preflight planning, his misjudged altitude while performing the emergency landing, and his lack of certificate qualification and recent flight…
- [NTSB LAX00LA271](https://openairdocs.org/ntsb/LAX00LA271.md): Air Tractor AT-401 · Ripley, CA · Accident · No injuries · Limited investigation · Final report · Jul 13, 2000 · N4508Y · Substantial damage
  > A loss of engine power due to the separation of a connecting rod from the crankshaft.
- [NTSB LAX00LA261](https://openairdocs.org/ntsb/LAX00LA261.md): Grumman G-164A · Gridley, CA · Accident · No injuries · Limited investigation · Final report · Jul 11, 2000 · N897X · Substantial damage
  > A partial loss of engine power due to the failure of an exhaust valve during an aerial application flight.
- [NTSB LAX00LA260](https://openairdocs.org/ntsb/LAX00LA260.md): Cessna 172N · Santa Ana, CA · Accident · No injuries · Limited investigation · Final report · Jun 22, 2000 · N7598D · Substantial damage
  > The loss of engine power during the initial takeoff climb, at too low an altitude to afford remedial action, because of an ingested valve, and the airplane's subsequent collision with the ground adjacent to the runway.
- [NTSB LAX00LA157](https://openairdocs.org/ntsb/LAX00LA157.md): Cessna 207 · Yreka, CA · Accident · Minor injuries · Limited investigation · Final report · Apr 17, 2000 · N1682U · Substantial damage
  > the total loss of engine power while in cruise flight due to the fatigue failure of the engine's anti-ice bleed air line, which resulted in the pilot's inability to utilize the engine anti-ice system. Contributing factors were the icing conditions and the…
- [NTSB LAX00LA062](https://openairdocs.org/ntsb/LAX00LA062.md): Cessna 172A · Dos Palos, CA · Accident · Minor injuries · Limited investigation · Final report · Jan 2, 2000 · N7249T · Substantial damage
  > A partial loss of engine power due to the failure of maintenance personnel to properly install and safety the throttle arm to the carburetor throttle shaft.
- [NTSB LAX00FA061](https://openairdocs.org/ntsb/LAX00FA061.md): Aerospatiale AS-350D · Avalon, CA · Accident · Serious injuries · Field investigation · Final report · Dec 28, 1999 · N3593S · Destroyed
  > A loose pneumatic fitting caused the engine to go to flight idle power at a low altitude, which resulted in a forced landing in hilly terrain.
- [NTSB LAX00LA020](https://openairdocs.org/ntsb/LAX00LA020.md): Cessna 150H · El Monte, CA · Accident · Minor injuries · Limited investigation · Final report · Oct 19, 1999 · N22795 · Substantial damage
  > A cracked No. 2 engine cylinder, which led to a loss of power. A factor was the ditch in the forced landing area.
- [NTSB LAX99LA245](https://openairdocs.org/ntsb/LAX99LA245.md): Hughes 369D · Oakdale, CA · Accident · No injuries · Limited investigation · Final report · Jul 3, 1999 · N8661F · Substantial damage
  > The disintegration and failure of the oil pump drive spur gear aft bearing, which resulted in failure of the oil pump and subsequent oil starvation to the engine's turbine module. A factor in the accident was the failure of company maintenance personnel to…
- [NTSB LAX99LA007](https://openairdocs.org/ntsb/LAX99LA007.md): Cessna 190 · Lost Hills, CA · Accident · Minor injuries · Limited investigation · Final report · Oct 10, 1998 · N1087D · Substantial damage
  > A loss of engine power due to fatigue failure of the number 4 cylinder articulating rod.
- [NTSB LAX98LA265](https://openairdocs.org/ntsb/LAX98LA265.md): Raymond C. Voegele Mini IMP RC-2 · Sonoma, CA · Accident · No injuries · Limited investigation · Final report · Aug 15, 1998 · N55961 · Substantial damage
  > A loss of power due to a loose magneto cap and a binding throttle control cable. The deficiencies were the result of the owner/pilot's improper installation and/or adjustments.
- [NTSB LAX98LA250](https://openairdocs.org/ntsb/LAX98LA250.md): Cessna 177 · Corona, CA · Accident · Minor injuries · Limited investigation · Final report · Jul 29, 1998 · N177JH · Substantial damage
  > The loss of engine power due to a partially closed fuel shutoff valve as a result of improper maintenance installation.
- [NTSB LAX98LA243](https://openairdocs.org/ntsb/LAX98LA243.md): Beech 35 · Temecula, CA · Accident · Minor injuries · Limited investigation · Final report · Jul 24, 1998 · N2720V · Destroyed
  > A partial loss of engine power due to a disconnected throttle linkage, which was the result of an inadequate maintenance installation/inspection.
- [NTSB LAX98LA230](https://openairdocs.org/ntsb/LAX98LA230.md): Piper PA-18-150 · Hyampom, CA · Accident · No injuries · Limited investigation · Final report · Jul 12, 1998 · N6248R · Substantial damage
  > Inadequate annual inspection that resulted in a partial loss of engine power due to a missing bolt, nut, and cotter pin from the throttle/carburetor assembly.
- [NTSB LAX98LA182](https://openairdocs.org/ntsb/LAX98LA182.md): Cessna 150M · Livermore, CA · Accident · Minor injuries · Limited investigation · Final report · Jun 4, 1998 · N704ZA · Substantial damage
  > The missing nut/cotter pin on the throttle attachment assembly which resulted in the pilot's inability to control engine power, and the hidden obstruction (hole) in the landing area. A factor was the high vegetation.
- [NTSB LAX98LA159](https://openairdocs.org/ntsb/LAX98LA159.md): Bell 206B · Temecula, CA · Accident · No injuries · Limited investigation · Final report · May 15, 1998 · N90215 · Destroyed
  > A loss of engine power due to a deteriorated compressor air seal which resulted in the fracture and separation of several stator vanes. Deterioration was not detected as a result of an inadequate maintenance inspection frequency.
- [NTSB LAX98IA158](https://openairdocs.org/ntsb/LAX98IA158.md): North American NA265-65 · Palm Springs, CA · Incident · No injuries · Incident investigation · Final report · May 10, 1998 · N651MK · Minor damage
  > the fatigue failure and uncontained separation of the high pressure impeller in the No. 2 engine during the takeoff roll. While the impeller showed evidence of a subsurface fatigue origin, the percipient cause of the separation was not definitively determined.

Next page: https://openairdocs.org/ntsb.md?state=CA&occurrence=352&page=2

## 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" = 'CA' 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=CA

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