# NTSB investigations: Amateur-built UNKNOWN ENG: Powerplant sys/comp malf/fail

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 CEN24LA185](https://openairdocs.org/ntsb/CEN24LA185.md): Titan T51 · Novi, MI · Accident · Serious injuries · Class 3 · Limited · Final report · May 12, 2024 · N260Y · Substantial damage
  > A failure of the electrical system, resulting in a loss of fuel injection and subsequent loss of engine power.
- [NTSB WPR24FA053](https://openairdocs.org/ntsb/WPR24FA053.md): Beauchamp Norm Kitfox · Eloy, AZ · Accident · 1 fatal · Class 3 · Field · Final report · Dec 8, 2023 · N66180 · Destroyed
  > The separation of a propeller blade during the initial climb due to insufficient blade retention forces. Contributing to the accident was the propeller blade retention design, manufacturing defects that prevented the propeller from achieving adequate grip…
- [NTSB ERA24LA040](https://openairdocs.org/ntsb/ERA24LA040.md): Bell Andy Skyraider II · Limington, ME · Accident · Minor injuries · Class 3 · Limited · Final report · Nov 16, 2023 · N90AB · Substantial damage
  > The failure of the fuel pump to adequately supply fuel to the engine due to significant corrosion.
- [NTSB WPR23LA352](https://openairdocs.org/ntsb/WPR23LA352.md): Wayne Toddun Sling 4 TSI · San Pedro, CA · Accident · Serious injuries · Class 3 · Limited · Final report · Sep 25, 2023 · N135WT · Substantial damage
  > A total loss of engine power due to a failure of the No. 4 cylinder exhaust valve from overheating and excessive wear.
- [NTSB CEN23LA327](https://openairdocs.org/ntsb/CEN23LA327.md): Vans RV10 · Chouteau, OK · Accident · Minor injuries · Class 3 · Limited · Final report · Jul 21, 2023 · N730WL · Substantial damage
  > The total loss of engine power as a result of a failed positive crankcase ventilation (PCV) valve and a subsequent impact with terrain.
- [NTSB ERA23LA073](https://openairdocs.org/ntsb/ERA23LA073.md): Childs Michael A Rotorway Exec 162-F · Titusville, FL · Accident · No injuries · Class 3 · Limited · Final report · Nov 27, 2022 · N8006A · Substantial damage
  > A failure of the No. 4 exhaust valve spring retainer, which resulted in a partial loss of engine power.
- [NTSB CEN22LA438](https://openairdocs.org/ntsb/CEN22LA438.md): Shirey David A Fisher Celebrity · Haskell, OK · Accident · No injuries · Class 4 · Limited · Final report · Sep 30, 2022 · N812TD · Destroyed
  > The inflight fire for reasons that could not be determined.
- [NTSB ERA22LA268](https://openairdocs.org/ntsb/ERA22LA268.md): Wingren Norman Escapade · Brasstown, NC · Accident · No injuries · Class 3 · Limited · Final report · May 9, 2022 · N86RD · Substantial damage
  > The failure of the engine gearbox drive flange, which resulted in a nose gear collapse during the subsequent precautionary landing in tall grass.
- [NTSB ERA19LA228](https://openairdocs.org/ntsb/ERA19LA228.md): Pietenpol BIG Piet · Gainesboro, TN · Accident · No injuries · Class 3 · Limited · Final report · Jul 16, 2019 · N973BP · Substantial damage
  > Separation of the spinner cap for reasons that could not be determined based on available evidence, which resulted in contact and subsequent separation of the wooden propeller blade tip.
- [NTSB WPR18FA131](https://openairdocs.org/ntsb/WPR18FA131.md): American Air Racing Thunder Mustang · Reno, NV · Accident · 1 fatal · Field investigation · Final report · May 2, 2018 · N352BT · Substantial damage
  > The pilot's failure to properly secure the engine coolant pump pulley during recent maintenance, which resulted in a loss of the engine's lubrication, cooling, and propeller control systems, and a forced landing, during which the airplane nosed over.…
- [NTSB DCA18IA092](https://openairdocs.org/ntsb/DCA18IA092.md): Boeing 777 222 · Honolulu, HI · Incident · No injuries · Incident investigation · Final report · Feb 13, 2018 · N773UA · Minor damage
  > the fracture of a fan blade due to P&W's continued classification of the TAI inspection process as a new and emerging technology that permitted them to continue accomplishing the inspection without having to develop a formal, defined initial and recurrent…
- [NTSB WPR17LA121](https://openairdocs.org/ntsb/WPR17LA121.md): Bob Frederick Titan T-51 · Goodyear, AZ · Accident · No injuries · Limited investigation · Final report · Jun 4, 2017 · N51FB · Substantial damage
  > Failure of the propeller speed reduction gearbox input drive gear during the airplane’s initial climb for reasons that could not be determined due to extensive damage.
- [NTSB ERA17LA077](https://openairdocs.org/ntsb/ERA17LA077.md): Beech 76 · Dunnellon, FL · Accident · No injuries · Limited investigation · Final report · Dec 30, 2016 · N6627U · Substantial damage
  > An inadequate 100-hour maintenance inspection that failed to detect and correct loose nuts on a single-drive dual magneto, which led to the subsequent separation of the magneto from the engine during initial climb and the total loss of engine power.
- [NTSB ERA17LA069](https://openairdocs.org/ntsb/ERA17LA069.md): Beech A36 · Shoreham, NY · Accident · No injuries · Limited investigation · Final report · Dec 11, 2016 · N69286 · Substantial damage
  > A fatigue crack of the crankshaft at the No. 4 main bearing journal.
- [NTSB ANC17LA006](https://openairdocs.org/ntsb/ANC17LA006.md): Piper PA32R · Bethel, AK · Accident · Minor injuries · Limited investigation · Final report · Nov 12, 2016 · N9084J · Substantial damage
  > A total loss of engine power due to oil starvation, which resulted from an oil cooler leak at a fractured brazed seam.
- [NTSB CEN16LA302](https://openairdocs.org/ntsb/CEN16LA302.md): Sonex Waiex · Fond du Lac, WI · Accident · Serious injuries · Limited investigation · Final report · Aug 3, 2016 · N12YX · Substantial damage
  > A partial loss of engine for reasons that could not be determined during an examination of the engine.
- [NTSB WPR16LA096](https://openairdocs.org/ntsb/WPR16LA096.md): DG Flugzeugbau DG 800B · Clements, CA · Accident · No injuries · Limited investigation · Final report · Apr 25, 2016 · N800YG · Substantial damage
  > The motorglider pilot's decision to perform an in-flight engine start with insufficient altitude, which resulted in an off-airport landing and collision with trees after the engine did not start. Contributing to the accident was the pilot's distraction by the…
- [NTSB ERA16LA041](https://openairdocs.org/ntsb/ERA16LA041.md): Woodrow Larry W Sonex · Morganton, NC · Accident · No injuries · Limited investigation · Final report · Nov 15, 2015 · N7035Z · Substantial damage
  > The pilot/owner’s inadequate maintenance inspection following a propeller strike, which resulted in the subsequent in-flight propeller separation due to propagation of fatigue cracks in the crankshaft.
- [NTSB CEN15CA155](https://openairdocs.org/ntsb/CEN15CA155.md): Gaddis Michael Exec 162 F · Plymouth, IN · Accident · No injuries · Data collection · Final report · Feb 26, 2015 · N123XZ · Substantial damage
  > The failure of the helicopter's main drive belt resulting in the pilot performing a forced landing, during which the helicopter's fuselage was substantially damage.
- [NTSB CEN15LA028](https://openairdocs.org/ntsb/CEN15LA028.md): Huebbe Sonex HB · Plainview, IL · Accident · 1 fatal · Limited investigation · Final report · Oct 26, 2014 · N244HB · Substantial damage
  > The loss of engine power during cruise flight due to a fatigue fracture of the crankshaft, which resulted in a forced landing on unsuitable terrain.
- [NTSB CEN14CA380](https://openairdocs.org/ntsb/CEN14CA380.md): Dantonio 404 · Wichita Falls, TX · Accident · No injuries · Data collection · Final report · Jul 14, 2014 · N482FD · Substantial damage
  > The separation of a spark plug wire resulting in a loss of engine power during climb out and a subsequent forced landing on a field containing trees.
- [NTSB ERA14LA130](https://openairdocs.org/ntsb/ERA14LA130.md): Victor M Cordero RV-9A · Apopka, FL · Accident · Serious injuries · Limited investigation · Final report · Feb 23, 2014 · N19VC · Substantial damage
  > The failure of the propeller spline shaft, the drive disk adapter, and the propeller speed reduction unit (PSRU) input spline due to a lack of inspection and lubrication, which resulted in a total loss of propeller drive and a subsequent forced landing.…
- [NTSB CEN13LA346](https://openairdocs.org/ntsb/CEN13LA346.md): Rogers T-51 Mustang KIT · St Francis, KS · Accident · No injuries · Limited investigation · Final report · Jun 11, 2013 · N548RR · Substantial damage
  > Foreign debris in the propeller governor, which led to excessive wear in the governor and its subsequent in-flight failure.
- [NTSB CEN12CA597](https://openairdocs.org/ntsb/CEN12CA597.md): Bordelon Bruce Kitfox IV · Castlerock, MN · Accident · No injuries · Data collection · Final report · Jul 31, 2012 · N396BK · Destroyed
  > Propeller system failure during a go-around maneuver resulting in a forced landing. Contributing to the severity of damage to the airplane was the postimpact fire.
- [NTSB CEN11LA566](https://openairdocs.org/ntsb/CEN11LA566.md): Air Tractor AT-400 · Nelson, NE · Accident · No injuries · Limited investigation · Final report · Aug 11, 2011 · N3659N · Substantial damage
  > Failure of the fuel control unit's spool cap bearing for reasons that could not be determined during extensive postaccident examination, and the pilot’s decision to shut the engine down without sufficient altitude and distance to reach the runway.
- [NTSB WPR11LA290](https://openairdocs.org/ntsb/WPR11LA290.md): Christen Industries Pitts S-1T · Alkali Lake, OR · Accident · Minor injuries · Limited investigation · Final report · Jun 26, 2011 · N77MN · Substantial damage
  > The loss of engine oil during cruise flight due to the failure of the front bearing oil seal.
- [NTSB ERA10LA362](https://openairdocs.org/ntsb/ERA10LA362.md): Garlick Helicopters OH-58A+ · Rowley, MA · Accident · No injuries · Limited investigation · Final report · Jul 15, 2010 · N802JB · Substantial damage
  > The failure of the power turbine governor internal driveshaft bearings, resulting in the failure of the governor.
- [NTSB ERA10TA261](https://openairdocs.org/ntsb/ERA10TA261.md): Bell 407 · Abingdon, VA · Accident · No injuries · Final report · May 11, 2010 · N31VA · Substantial damage
  > The improper repair of an engine component by a repair facility, which resulted in a complete loss of engine power. Contributing to the accident was the failure of the repair facility to recognize that an improper repair had been accomplished, which allowed…
- [NTSB ERA10LA229](https://openairdocs.org/ntsb/ERA10LA229.md): Dalin Ronald K T-51 Mustang · Lakeland, FL · Accident · No injuries · Limited investigation · Final report · Apr 14, 2010 · N551RD · Substantial damage
  > The builder’s use of inadequate material for the exhaust manifold adapters resulting in heat damage and chafing of the crankshaft synchronizer and timing wires that rendered an inoperative ignition system and loss of engine power.
- [NTSB ERA09LA477](https://openairdocs.org/ntsb/ERA09LA477.md): Vollenweider R/Hurst R F Vans RV-9A · Marianna, FL · Accident · Serious injuries · Limited investigation · Final report · Aug 23, 2009 · N362TS · Substantial damage
  > Failure of the propeller speed reduction gearbox for undetermined reasons. Contributing to the accident was the pilot’s decision to disregard the manufacturer's mandate to replace the gearbox, the manufacturer's failure to provide owners with technical…
- [NTSB SEA08GA194](https://openairdocs.org/ntsb/SEA08GA194.md): Lockheed P2V-7 · Reno, NV · Accident · 3 fatal · Final report · Sep 2, 2008 · N4235T · Destroyed
  > The failure of the flight crew to maintain airspeed above in-flight minimum control speed (Vmca) after losing power in the left jet engine during initial climb after takeoff. Contributing to the accident was the crew's inadequate cockpit resource management…

## 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_events.parquet' e WHERE e.case_mkey = x.case_mkey AND e.aircrafts_position = x.position AND e."isDefiningEvent" AND e."tier2Number" = '340'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-events/340/cases?engine=99999

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