# NTSB investigations, AL: 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.

## Latest cases

- [NTSB MIA07LA111](https://openairdocs.org/ntsb/MIA07LA111.md): Beech A36 · Cullman, AL · Accident · Serious injuries · Limited investigation · Final report · Jun 22, 2007 · N18491 · Substantial damage
  > The pilot’s mismanagement of an in-flight emergency, which resulted in a gear-up landing and runway overrun. Contributing to the accident was a breach to the engine crankcase above and in line with the No. 1 cylinder.
- [NTSB ATL07LA063](https://openairdocs.org/ntsb/ATL07LA063.md): Randy Stanley Rotoway Exc 162F · Foley, AL · Accident · No injuries · Limited investigation · Final report · Mar 29, 2007 · N494D · Substantial damage
  > Loss of engine power due to failure of the No. 4 engine exhaust valve.
- [NTSB ATL06LA072](https://openairdocs.org/ntsb/ATL06LA072.md): Air Tractor AT-502 · Monroeville, AL · Accident · No injuries · Limited investigation · Final report · Apr 28, 2006 · N1014D · Substantial damage
  > Partial loss of engine power for undetermined reasons, which resulted in a forced landing and subsequent nose over.
- [NTSB ATL06LA051](https://openairdocs.org/ntsb/ATL06LA051.md): Eakle R Grandin Jr Talon XP · Auburn, AL · Accident · Serious injuries · Limited investigation · Final report · Mar 12, 2006 · N97GE · Substantial damage
  > The pilot's failure to maintain airspeed which resulted in an inadvertent stall. A factor was the improper maintenance inspection of the engine fuel lines resulting in loss of engine power due to a loose fuel line and subsequent fuel starvation.
- [NTSB ATL05CA162](https://openairdocs.org/ntsb/ATL05CA162.md): Piper PA-34-200 · Greenville, AL · Accident · Serious injuries · Data collection · Final report · Sep 16, 2005 · N287RR · Substantial damage
  > The loss of left engine power due to fuel system contamination and the pilot's failure to follow procedures and his improper use of the throttle and flight controls during the forced landing.
- [NTSB ATL05LA118](https://openairdocs.org/ntsb/ATL05LA118.md): Piper PA-31P · Fort Payne, AL · Accident · Minor injuries · Limited investigation · Final report · Jun 30, 2005 · N4200N · Substantial damage
  > The loss of engine power due to the failure of the aft clamp connecting the turbocharger compressor outlet to the intercooler ducting which resulted in reduced aircraft performance during takeoff.
- [NTSB ATL05LA001](https://openairdocs.org/ntsb/ATL05LA001.md): Stinson 108 · Ashland, AL · Accident · Minor injuries · Limited investigation · Final report · Oct 2, 2004 · N40129 · Substantial damage
  > A total loss of engine power in cruise flight due to the fatigue failure of the No.4 cylinder exhaust valve.
- [NTSB ATL03LA109](https://openairdocs.org/ntsb/ATL03LA109.md): Keuthan Buccaneer II · Pell City, AL · Accident · No injuries · Limited investigation · Final report · Jul 17, 2003 · N9110T · Substantial damage
  > The failure of the throttle cable due to fatigue resulting in a loss of engine power. Factor were uphill rough and uneven terrain.
- [NTSB MIA02LA169](https://openairdocs.org/ntsb/MIA02LA169.md): Charles Maxted RV6 · Bay Minette, AL · Accident · No injuries · Limited investigation · Final report · Sep 16, 2002 · N440CM · Substantial damage
  > The intentional operation of the airplane with known deficiencies with the right magneto resulting in the partial loss of engine power during the initial climb.
- [NTSB MIA99LA137](https://openairdocs.org/ntsb/MIA99LA137.md): Beech A36 · Courtland, AL · Accident · Serious injuries · Limited investigation · Final report · Apr 21, 1999 · N769LW · Substantial damage
  > The failure of maintenance personnel from Signature Flight Support to assure that a cotter pin was installed at the air throttle assembly lever following installation of the overhauled fuel control valve onto the overhauled engine. This resulted in the…
- [NTSB ATL98LA084](https://openairdocs.org/ntsb/ATL98LA084.md): Bellanca 17-31A · Millry, AL · Accident · No injuries · Limited investigation · Final report · Jun 15, 1998 · N39853 · Substantial damage
  > The fracture of the #2 cylinder connecting rod which resulted in partial loss of engine power and subsequent forced landing. A factor in the accident was the rough terrain.
- [NTSB MIA98LA159](https://openairdocs.org/ntsb/MIA98LA159.md): Piper PA-28-140 · Luvurne, AL · Accident · No injuries · Limited investigation · Final report · May 8, 1998 · N8218N · Substantial damage
  > The loss of engine power due to a leaking engine oil seal, resulting in a forced landing, and subsequent impact with the ground. A factor in this accident was improper maintenance and checks after rebuilding and reinstalling the airplane's engine.
- [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 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 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 ATL95FA090](https://openairdocs.org/ntsb/ATL95FA090.md): Axell, Charles Glasair RG-2 · Elberta, AL · Accident · 2 fatal · Field investigation · Final report · Apr 26, 1995 · N86XL · Destroyed
  > The pilot's failure to maintain flying speed which resulted in a stall. A factor was the loss of engine power due to a blocked fuel injector nozzle.
- [NTSB ATL93LA157](https://openairdocs.org/ntsb/ATL93LA157.md): Air Tractor AT301 · Deatsville, AL · Accident · No injuries · Limited investigation · Final report · Sep 11, 1993 · N36613 · Substantial damage
  > Was a crack in no.3 cylinder head which resulted in the loss of engine power.
- [NTSB ATL90LA155](https://openairdocs.org/ntsb/ATL90LA155.md): Cessna 172L · Greensboro, AL · Accident · No injuries · Limited investigation · Final report · Aug 4, 1990 · N4386Q · Substantial damage
  > The pilot's failure to maintain proper airspeed and attain the proper touchdown point during the emergency landing.
- [NTSB ATL90DKJ07](https://openairdocs.org/ntsb/ATL90DKJ07.md): Bell-Continental Copters 47G · Clayhatchee, AL · Accident · Serious injuries · Final report · Jul 27, 1990 · N7153 · Substantial damage
  > Failure of the engine magneto(s). The lack of suitable terrain (trees) in the emergency landing area was a related factor.
- [NTSB ATL90FA071](https://openairdocs.org/ntsb/ATL90FA071.md): Piper PA-28-151 · Creola, AL · Accident · Serious injuries · Field investigation · Final report · Mar 4, 1990 · N991DB · Substantial damage
  > The pilot's failure to assure that proper maintenance and inspection of the aircraft were completed before flight.
- [NTSB ATL89FA214](https://openairdocs.org/ntsb/ATL89FA214.md): Piper PA-28R-180 · Gordon, AL · Accident · 3 fatal · Field investigation · Final report · Sep 17, 1989 · N7503J · Substantial damage
  > The improper installation of the fuel gascolator bowl by maintenance personnel, which resulted in fuel leakage and a loss of fuel pressure to the engine.
- [NTSB ATL89FA163](https://openairdocs.org/ntsb/ATL89FA163.md): Cessna 172F · Vernon, AL · Accident · 1 fatal · Field investigation · Final report · Jun 17, 1989 · N7939U · Substantial damage
  > Improper maintenance of the spark plugs by the pilot/mechanic which resulted in a partial loss of engine power, and the pilot's failure to clear trees during an emergency landing in an open field resulting in an inadvertent stall.
- [NTSB ATL89FA078](https://openairdocs.org/ntsb/ATL89FA078.md): Piper PA-28-140 · Bagley, AL · Accident · 2 fatal · Field investigation · Final report · Jan 18, 1989 · N8456R · Substantial damage
  > Inadequate maintenance by other maintenance personnel which allowed a foreign object to remain in the engine and damage/short the spark plugs in the #2 and #3 cylinders. Trees in the emergency landing area contributed to the accident. If shoulder harnesses…
- [NTSB ATL88DKG13](https://openairdocs.org/ntsb/ATL88DKG13.md): Grumman G-164A · Fadette, AL · Accident · No injuries · Final report · Aug 9, 1988 · N8573H · Substantial damage
  > The pilot reported a partial power loss during an aerial application flight. The aircraft landed in the crops. The pilot stated that he found the number 3 cylinder partially separated from the engine.
- [NTSB ATL88FA168](https://openairdocs.org/ntsb/ATL88FA168.md): Hughes 269A · Ozark, AL · Accident · 1 fatal · Field investigation · Final report · May 9, 1988 · N1038Y · Substantial damage
  > Three months prior to the accident a mechanic repaired the left magneto. He reinstalled it and timed it with the right magneto. Both magnetos were found to have advanced timing. Internal examination showed discrepancies which would lead to electrical…
- [NTSB ATL86LA005](https://openairdocs.org/ntsb/ATL86LA005.md): Hughes 269C · Chapman, AL · Accident · Minor injuries · Limited investigation · Final report · Oct 10, 1985 · N7451F · Destroyed
  > During an attempted takeoff from a field adjacent to a grove of trees the aircraft was unable to climb over the trees and crashed into them. The engine was test run and although it ran rough during initial start up it later operated normally and the reason…
- [NTSB ATL85LA138](https://openairdocs.org/ntsb/ATL85LA138.md): Cessna 152 · Jacksonville, AL · Accident · No injuries · Limited investigation · Final report · Apr 19, 1985 · N5330B · Substantial damage
  > Pilot experienced power failure during climbout. A forced landing was made in a plowed fld and the acft nosed over. Examination of the wreckage revealed that the carburetor airbox seal had deteriorated and lodged in the throat of the carburetor. Last annual…
- [NTSB ATL83AA235](https://openairdocs.org/ntsb/ATL83AA235.md): Cessna 421A · Atmore, AL · Accident · 8 fatal · Final report · Jun 22, 1983 · N2960Q · Destroyed
  > About 20 mins after takeoff the plt reported the right eng had lost power & the acft would not maintain alt. Vectors were provided for an emergency landing, but the acft crashed in a wooded area about 3 mi from the arpt. There was evidence that the gear &…
- [NTSB ATL82IA121](https://openairdocs.org/ntsb/ATL82IA121.md): Piper PA-31-350 · Enterprise, AL · Incident · No injuries · Incident investigation · Final report · Apr 30, 1982 · N53RT · Minor damage
  > Shortly after liftoff, the pilot felt the aircraft yaw left and noticed that the left engine manifold pressure had dropped from 42" hg to 29" hg. He analysed a turbocharger failure and elected to keep the engine running in the normallyaspirated mode. At…

## 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" = 'AL' 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=AL

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