# NTSB investigations: Amateur-built UNKNOWN ENG: 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 1 of 2 · 61 cases

## Latest cases

- [NTSB LAX08CA033](https://openairdocs.org/ntsb/LAX08CA033.md): Senft/Anderson/salmon C-5 · Tucson, AZ · Accident · Minor injuries · Data collection · Final report · Dec 6, 2007 · N700H · Substantial damage
  > a total loss of engine power due to the failure of the number 3 articulating rod.
- [NTSB CHI07CA262](https://openairdocs.org/ntsb/CHI07CA262.md): Beech BE-77 · Bloomington, IN · Accident · No injuries · Data collection · Final report · Aug 8, 2007 · N1837Y · Substantial damage
  > The loss of engine power due to fuel exhaustion as a result of the pilot's inadequate preflight.
- [NTSB SEA07FA195](https://openairdocs.org/ntsb/SEA07FA195.md): Yakovlev YAK-55M · Everett, WA · Accident · 1 fatal · Field investigation · Final report · Jul 14, 2007 · N55NH · Destroyed
  > The pilot's inadequate preflight planning and inspection that led to oil exhaustion and a catastrophic engine failure. Also causal was the pilot's attempted operation of an aircraft with known deficiencies, and the lack of a current airworthiness inspection.…
- [NTSB LAX07LA197](https://openairdocs.org/ntsb/LAX07LA197.md): Evenson Roger J Vans RV-9A · Tucson, AZ · Accident · Minor injuries · Limited investigation · Final report · Jun 29, 2007 · N394RS · Substantial damage
  > the loss of engine power during takeoff-initial climb, which resulted from the owner/builder's improper adjustment of the supercharger waste gate valve, that resulted in the failure of the waste gate servo motor.
- [NTSB ATL07CA084](https://openairdocs.org/ntsb/ATL07CA084.md): Rotorway Rotorway Intl 162F · Argyle, NY · Accident · No injuries · Data collection · Final report · May 21, 2007 · N636PB · Substantial damage
  > The loss of engine power due to the sticking of the exhaust valves that resulted from carbon buildup.
- [NTSB SEA07LA095](https://openairdocs.org/ntsb/SEA07LA095.md): Diemert/Rotorway Exec 162 F · Roseburg, OR · Accident · No injuries · Limited investigation · Final report · Apr 8, 2007 · N173ST · Substantial damage
  > a total loss of engine power due to the failure of the primary and secondary electronic control units (ECU's) within the engine's Fully Automated Digital Electronic Control.
- [NTSB LAX07CA063](https://openairdocs.org/ntsb/LAX07CA063.md): Belcher Helicycle · Boulder City, NV · Accident · No injuries · Data collection · Final report · Dec 23, 2006 · N6912B · Substantial damage
  > a loss of engine power due to a fractured fuel line.
- [NTSB NYC07LA026](https://openairdocs.org/ntsb/NYC07LA026.md): Vogel Glastar 41 · Snow Shoe, PA · Accident · 1 fatal · Limited investigation · Final report · Nov 11, 2006 · N441AV · Substantial damage
  > The builder's improper installation of an additional alternator. Contributing to the accident were the night lighting conditions.
- [NTSB SEA06LA167](https://openairdocs.org/ntsb/SEA06LA167.md): Kinnson Lancair IV-P Turbine · Helena, MT · Accident · Minor injuries · Limited investigation · Final report · Aug 22, 2006 · N514PT · Substantial damage
  > The total loss of engine power as a result of turbine over temperature due to the pilot's failure to follow proper procedures for engine operation. A contributing factor was the lack of suitable terrain for the ensuing forced landing.
- [NTSB SEA06CA080](https://openairdocs.org/ntsb/SEA06CA080.md): Pitrolo GL-25 · Worden, MT · Accident · No injuries · Data collection · Final report · Apr 21, 2006 · N27EP · Substantial damage
  > The loss of engine power due to failure of both electronic ignition systems. A contributing factor was the lack of suitable terrain for the forced landing.
- [NTSB SEA06LA074](https://openairdocs.org/ntsb/SEA06LA074.md): Central Copters Lancair IV-P · Belgrade, MT · Accident · No injuries · Limited investigation · Final report · Apr 15, 2006 · N671 · Destroyed
  > The total loss of drive power to the aircraft's propeller while on a visual final approach, due to the decoupling of the quill shaft between the reduction gearbox and the engine power section. Factors include a dark night, no suitable terrain on which to…
- [NTSB IAD05LA144](https://openairdocs.org/ntsb/IAD05LA144.md): Howard Whyte Nieuport 28 · Dayton, OH · Accident · Serious injuries · Limited investigation · Final report · Sep 30, 2005 · N62610 · Substantial damage
  > A loss of engine power due to the installation of incorrect spring type terminal contacts which were accidentally supplied by the engine distributor.
- [NTSB SEA05LA189](https://openairdocs.org/ntsb/SEA05LA189.md): Ballhagen/Shyrock Q-2 · Kalispell, MT · Accident · No injuries · Limited investigation · Final report · Sep 2, 2005 · N12QJ · Substantial damage
  > The pilot/owner's improper setting of the engine's valve clearance, leading to the failure of the exhaust valves to fully close and a total loss of power while on a VFR downwind, and the pilot/owner's failure to maintain sufficient airspeed as he tried to…
- [NTSB ATL05LA052](https://openairdocs.org/ntsb/ATL05LA052.md): WSK PZL Mielec M-18A · Macedonia, SC · Accident · No injuries · Limited investigation · Final report · Feb 23, 2005 · N2296Y · Substantial damage
  > The fatigue cracking of the planetary gear housing, which resulted in the loss of engine power.
- [NTSB IAD05LA033](https://openairdocs.org/ntsb/IAD05LA033.md): Ghiles MCR-01 VLA · Cincinnati, OH · Accident · No injuries · Limited investigation · Final report · Jan 17, 2005 · N3085Q · Substantial damage
  > A total loss of engine power due to an oil hose collapse, which resulted in failure of the #4 connecting rod.
- [NTSB CHI05CA032](https://openairdocs.org/ntsb/CHI05CA032.md): Olson Sonex · Oconomowoc, WI · Accident · Serious injuries · Data collection · Final report · Nov 21, 2004 · N478SX · Substantial damage
  > The loss of engine power due to a fatigue fracture of the crankshaft. An additional cause to the accident was the pilot/builder's failure to verify the dimensions of the shrink-fit crankshaft components prior reassembling the engine. A factor to the accident…
- [NTSB NYC04LA201](https://openairdocs.org/ntsb/NYC04LA201.md): PZL 101 · Chazy, NY · Accident · No injuries · Limited investigation · Final report · Aug 31, 2004 · N123LZ · Substantial damage
  > The total loss of engine power due to the fractured crankshaft.
- [NTSB LAX04LA229](https://openairdocs.org/ntsb/LAX04LA229.md): Simmons BD-5 · Goodyear, AZ · Accident · No injuries · Limited investigation · Final report · May 29, 2004 · N501BD · Substantial damage
  > The overheating and failure of the number 4 connecting rod, which resulted in a total loss of engine power during descent.
- [NTSB CHI04CA142](https://openairdocs.org/ntsb/CHI04CA142.md): Kauffman Bede IV · Acme, MI · Accident · No injuries · Data collection · Final report · May 26, 2004 · N115PK · Substantial damage
  > Engine oil starvation and inadequate maintenance by the pilot.
- [NTSB LAX04LA069](https://openairdocs.org/ntsb/LAX04LA069.md): Allison KR-2 · Glendale, AZ · Accident · Serious injuries · Limited investigation · Final report · Dec 16, 2003 · N82KR · Substantial damage
  > loss of engine power due to a loose carburetor jet. A contributing factor was the owner/operators failure to have a condition inspection performed on the aircraft.
- [NTSB CHI04LA019](https://openairdocs.org/ntsb/CHI04LA019.md): Beech A36 · Davenport, IA · Accident · No injuries · Limited investigation · Final report · Oct 16, 2003 · N25496 · Substantial damage
  > A loss of engine power due to fuel starvation as a result of the improper installation of the fuel nozzle. Also causal was the engine manufacturer's improper installation instructions for the nozzle pressure port plug on the fuel manifold valve. A factor…
- [NTSB CHI03LA214](https://openairdocs.org/ntsb/CHI03LA214.md): Ayres S2R-G10 · Staples, MN · Accident · No injuries · Limited investigation · Final report · Jul 17, 2003 · N3299A · Destroyed
  > The fatigue fracture of the oil jet flange resulting in a total engine failure during the aerial application.
- [NTSB ATL03LA106](https://openairdocs.org/ntsb/ATL03LA106.md): Polstra Zodiac CH 601 HDS · Thomson, GA · Accident · No injuries · Limited investigation · Final report · Jun 16, 2003 · N721PT · Substantial damage
  > The total loss of engine power due to the fatigue fracture of the No. 3 cylinder intake valve, which resulted in a forced landing to rough terrain and subsequent collision with small trees and a tree stump.
- [NTSB MIA03LA080](https://openairdocs.org/ntsb/MIA03LA080.md): Ditommasso-Keminski Great Lakes 2T-1A · Daytona Beach, FL · Accident · Serious injuries · Limited investigation · Final report · Mar 22, 2003 · N1980A · Substantial damage
  > The pilot's improper preflight planning/decision to perform a second flight with known deficiencies in equipment, and his failure to maintain airspeed above the airplane's stall speed while maneuvering to reverse direction to land, after the engine…
- [NTSB LAX00LA350](https://openairdocs.org/ntsb/LAX00LA350.md): Worgull Hornet · Camp Verde, AZ · Accident · No injuries · Limited investigation · Final report · Sep 11, 2000 · N707BD · Substantial damage
  > Separation of the forward spark plug due to wear damage to the cylinder head threads. A factor in the accident was traffic on the highway and the pilot having to maneuver to avoid the traffic.
- [NTSB CHI00LA226](https://openairdocs.org/ntsb/CHI00LA226.md): Halsmer Crazy 8 · Lafayette, IN · Accident · 1 fatal · Limited investigation · Final report · Jul 27, 2000 · N9034L · Destroyed
  > Aircraft control not being maintained by the pilot during the forced landing. Factors to the accident were the engine failure due to an overtemperature, the pilot's lack of familiarity with the aircraft, and the trees.
- [NTSB NYC00LA156](https://openairdocs.org/ntsb/NYC00LA156.md): Stewart S-51 · Forty Fort, PA · Accident · Minor injuries · Limited investigation · Final report · Jun 9, 2000 · N51FY · Substantial damage
  > The owner/builder's inadequate design, resulting in total failure of the reduction gear assembly accessory drive shaft.
- [NTSB FTW00LA178](https://openairdocs.org/ntsb/FTW00LA178.md): Gulfstream-Schweizer G-164D · Welsh, LA · Accident · Minor injuries · Limited investigation · Final report · Jun 6, 2000 · N8337K · Substantial damage
  > The excessive wear of the reduction gearbox's 1st stage sungear, which resulted in its subsequent fatigue fracture and failure. Factors were the operator not performing the recommended overhaul of the engine, and a lack of suitable terrain for the forced…
- [NTSB MIA00LA132](https://openairdocs.org/ntsb/MIA00LA132.md): Hartline Glastar · Woodstock, AL · Accident · Serious injuries · Limited investigation · Final report · Apr 13, 2000 · N897G · Substantial damage
  > a total engine failure for undetermined reason, resulting in a forced landing and subsequent impact with a tree.
- [NTSB LAX00LA034](https://openairdocs.org/ntsb/LAX00LA034.md): Hawker Siddeley Hunter T MK 7 · Mesa, AZ · Accident · Serious injuries · Limited investigation · Final report · Nov 17, 1999 · N576NL · Substantial damage
  > The fatigue failure and separation the stage 3 compressor blades due to corrosion pitting of the blade retention lug bores. A factor in the accident was the failure of the various post military surplus operators of this engine to incorporate the…
- [NTSB LAX99LA304](https://openairdocs.org/ntsb/LAX99LA304.md): Glover Teenie TWO · Chino, CA · Accident · Minor injuries · Limited investigation · Final report · Sep 12, 1999 · N925SG · Destroyed
  > The in-flight separation and loss of the carburetor fuel jet resulting from the pilot's improper installation of the component. Also causal was the pilot's failure to maintain an adequate airspeed margin following the loss of power, which resulted in an…
- [NTSB LAX98LA192](https://openairdocs.org/ntsb/LAX98LA192.md): Arner Challenger II S · Pleasant Valley, AZ · Accident · No injuries · Limited investigation · Final report · Jun 7, 1998 · N2NX · Substantial damage
  > Loss of engine power due to a loose spark plug wire cap caused by a broken spark plug retainer spring.
- [NTSB SEA96LA196](https://openairdocs.org/ntsb/SEA96LA196.md): Westcott Glasair I-FT · Puyallup, WA · Accident · Serious injuries · Limited investigation · Final report · Aug 21, 1996 · N289W · Substantial damage
  > failure of the air inlet screen, and subsequent ingestion of the foam air filter. An inadequate maintenance modification by the amateur builder and no suitable landing area were related factors.
- [NTSB NYC96LA117](https://openairdocs.org/ntsb/NYC96LA117.md): Cessna 177B · Chatham, MA · Accident · Minor injuries · Limited investigation · Final report · May 28, 1996 · N19708 · Substantial damage
  > failure of the oil pump, which resulted in oil starvation and subsequent failure of the number two and four cylinder connecting rods. Also causal was inadequate maintenance by noncompliance with the airworthiness directive that required replacement of the oil…
- [NTSB FTW96FA216](https://openairdocs.org/ntsb/FTW96FA216.md): Nanchang CJ-6A · Shreveport, LA · Accident · 2 fatal · Field investigation · Final report · May 16, 1996 · N24AD · Destroyed
  > a loss of engine power due to failure of the pressure carburetor diaphragm which led to restricted fuel flow through the carburetor and eventual fuel starvation. Factors contributing to the accident were the unsuitable terrain and tall trees which resulted in…
- [NTSB FTW96LA132](https://openairdocs.org/ntsb/FTW96LA132.md): Grumman G-164A · Dewitt, AR · Accident · No injuries · Limited investigation · Final report · Feb 24, 1996 · N48435 · Substantial damage
  > a loss of engine power due to the malfunction of the carburetor as a result of an improper overhaul. A factor was the unsuitable terrain for the forced landing.
- [NTSB LAX95LA309](https://openairdocs.org/ntsb/LAX95LA309.md): Josephson MC-15 Cricket · San Diego, CA · Accident · No injuries · Limited investigation · Final report · Aug 29, 1995 · N128HJ · Substantial damage
  > the failure of the left engine due to inadequate maintenance of the ignition system.
- [NTSB NYC95FA188](https://openairdocs.org/ntsb/NYC95FA188.md): Beech 58 · Mapleton, ME · Accident · 1 fatal · Field investigation · Final report · Aug 14, 1995 · N168CG · Destroyed
  > The pilot inadvertently shut down the right engine and feathered the propeller after a loss of power in the left engine, and he failed to maintain adequate airspeed, which resulted in an inadvertent stall/spin and collision with the ground. A factor relating…
- [NTSB FTW95LA317](https://openairdocs.org/ntsb/FTW95LA317.md): Grumman G-164A · Mccrory, AR · Accident · Minor injuries · Limited investigation · Final report · Jul 27, 1995 · N6636Q · Substantial damage
  > The loss of engine power due to a cracked cylinder. A factor was the lack of suitable terrain for the forced landing.
- [NTSB CHI95LA117](https://openairdocs.org/ntsb/CHI95LA117.md): Lewis KR-2 · Ogallala, NE · Accident · No injuries · Limited investigation · Final report · Apr 6, 1995 · N49TF · Substantial damage
  > the owner/builder's improper maintenance (installation). Factors were the carburetor reversed and the mixture control cable not secured.
- [NTSB ANC93IA176](https://openairdocs.org/ntsb/ANC93IA176.md): Sikorsky C54A · Anita Bay, AK · Incident · No injuries · Incident investigation · Final report · Sep 12, 1993 · N44094 · Minor damage
  > The separation of the turbine blade from the power turbine disc.
- [NTSB SEA93LA150](https://openairdocs.org/ntsb/SEA93LA150.md): Hoopes Hummelbird · Salt Lake City, UT · Accident · No injuries · Limited investigation · Final report · Jul 8, 1993 · N2227S · Substantial damage
  > A fractured crankshaft.
- [NTSB NYC92IA129](https://openairdocs.org/ntsb/NYC92IA129.md): Boeing 767-231ER · Jamica, NY · Incident · No injuries · Incident investigation · Final report · Jun 28, 1992 · N602TW · Minor damage
  > The failure of the fifth stage low pressure turbine vanes due to fatigue.
- [NTSB FTW92LA132](https://openairdocs.org/ntsb/FTW92LA132.md): Schweizer G-164D · Welsh, LA · Accident · No injuries · Limited investigation · Final report · May 14, 1992 · N8331K · Substantial damage
  > The engine failure at liftoff due to the failure of multiple turbine blades and the pilot's inability to maintain directional control during the aborted takeoff.
- [NTSB LAX92LA208](https://openairdocs.org/ntsb/LAX92LA208.md): Corbus/Winters BD-5B · Fresno, CA · Accident · No injuries · Limited investigation · Final report · May 9, 1992 · N811Q · Substantial damage
  > The total loss of engine power during initial climb due to a fracture and failure of the engine starter ring gear. A contributing factor which was related to the mechanical failure was the airplane owner's inadequate maintenance.
- [NTSB NYC91DNC04](https://openairdocs.org/ntsb/NYC91DNC04.md): Laurent A. Cloutier BD-5B · Gilford, NH · Accident · Minor injuries · Final report · Aug 3, 1991 · N245BD · Substantial damage
  > Engine failure due to a faulty oil pressure relief valve resulting in an emergency landing on unsuitable terrain.
- [NTSB SEA91LA092](https://openairdocs.org/ntsb/SEA91LA092.md): Smelser KR-2 · Spokane, WA · Accident · Minor injuries · Limited investigation · Final report · Apr 20, 1991 · N570TS · Substantial damage
  > A failure of the fuel drain valve which resulted in fuel exhaustion and a loss of engine power.
- [NTSB SEA91LA031](https://openairdocs.org/ntsb/SEA91LA031.md): Beech 3NM · Bozeman, MT · Accident · No injuries · Limited investigation · Final report · Dec 9, 1990 · N9159B · Substantial damage
  > The failure of the right engine master rod.
- [NTSB DEN89LA165](https://openairdocs.org/ntsb/DEN89LA165.md): Henry Vickers HCV-110 · Newcastle, WY · Accident · Minor injuries · Limited investigation · Final report · Jul 4, 1989 · N4831N · Substantial damage
  > The failure to the magneto. The selection of a powerplant with a single magneto system was an improper choice and directly contributed to the cause. The pilot's misjudgement of the wind for the approach to a forced landing resulted in an improper ground…
- [NTSB MIA89LA053](https://openairdocs.org/ntsb/MIA89LA053.md): Pilatus P-2/05 · St. Augustine, FL · Accident · Minor injuries · Limited investigation · Final report · Dec 19, 1988 · N109PL · Destroyed
  > After an en route stop, the pilot took off in the newly acquired acft. Shortly after gear and flap retraction, the eng sustained a partial loss of power. The plt stated that all eng gages appeared normal and a turn was begun in an attempt to return to the…

Next page: https://openairdocs.org/ntsb.md?engine=99999&occurrence=351&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."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.engine_model_code IN ('99999')
    AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o WHERE o.case_mkey = x.case_mkey AND o.aircrafts_position = x.position AND 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?engine=99999&occurrence=351

---
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.
