# Final NTSB investigations: 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.

Page 1 of 13 · 604 cases

## Latest cases

- [NTSB ERA26LA151](https://openairdocs.org/ntsb/ERA26LA151.md): Piper PA-32-260 · Block Island, RI · Accident · Minor injuries · Class 4 · Limited · Final report · Mar 25, 2026 · N7081H · Substantial damage
  > Maintenance personnel’s failure to ensure that the throttle cable was properly secured to the carburetor, which resulted an inflight separation of the throttle cable and the pilots’ inability to control the engine.
- [NTSB ERA26LA030](https://openairdocs.org/ntsb/ERA26LA030.md): Hugh Nunnally Farrior Cozy MK IV · McRae-Helena, GA · Accident · No injuries · Class 4 · Limited · Final report · Oct 28, 2025 · N222HF · Substantial damage
  > The pilot’s failure to extend the nose landing gear, which resulted in a nose gear up landing. Contributing to the accident was the pilot’s inappropriate decision to continue to fly with known delamination damage to the propeller.
- [NTSB ERA25LA235](https://openairdocs.org/ntsb/ERA25LA235.md): Cessna R182 · Milton, FL · Accident · No injuries · Class 3 · Limited · Final report · Jun 23, 2025 · N262AL · Substantial damage
  > Separation of the throttle cable sleeve during takeoff, which resulted an uncommanded engine power reduction and the pilot’s inability to control the engine throttle, and resulted in a forced landing.
- [NTSB ERA25FA230](https://openairdocs.org/ntsb/ERA25FA230.md): Mooney M20F · Beverly, MA · Accident · 2 fatal · Class 3 · Field · Final report · Jun 19, 2025 · N9573M · Substantial damage
  > The pilot’s failure to maintain control of the airplane while maneuvering to return to the airport which resulted in an aerodynamic stall. Contributing to the accident was the improperly installed No. 2 cylinder bottom spark plug by maintenance personnel,…
- [NTSB ERA25LA198](https://openairdocs.org/ntsb/ERA25LA198.md): Diamond Aircraft Ind DA 40 NG · Sanford, NC · Accident · Serious injuries · Class 3 · Limited · Final report · May 7, 2025 · N499BW · Substantial damage
  > The mechanic’s re-use of worm drive clamps, which resulted in a separation of the turbocharger air discharge duct and a partial loss of engine power during initial climb.
- [NTSB ERA25LA159](https://openairdocs.org/ntsb/ERA25LA159.md): Silvaire Luscombe 8A · New Port Richey, FL · Accident · No injuries · Class 3 · Limited · Final report · Mar 27, 2025 · N28790 · Substantial damage
  > Maintenance personnel’s inadequate inspection of the exhaust system, which allowed exhaust gases to enter the induction system from cracks in the exhaust manifold, resulting in a total loss of engine power and a subsequent forced landing.
- [NTSB CEN25LA165](https://openairdocs.org/ntsb/CEN25LA165.md): Cessna T206 · Natchez, MS · Accident · No injuries · Class 3 · Limited · Final report · Mar 27, 2025 · N27DV · Substantial damage
  > Maintenance personnel’s improper maintenance, which resulted in a loss of engine power due to fuel starvation as the result of a loose fuel line B-nut. Contributing to the accident was an inadequate 100-hour inspection performed after the recent maintenance.
- [NTSB ANC25LA025](https://openairdocs.org/ntsb/ANC25LA025.md): Cessna 172A · Fairbanks, AK · Accident · Minor injuries · Class 3 · Limited · Final report · Mar 16, 2025 · N7274T · Substantial damage
  > The pilot’s decision to initiate the flight despite identifying a malfunction in the carburetor heat system during the pre-takeoff engine run-up, which led to a partial loss of engine power during climb out. Contributing to the accident was maintenance…
- [NTSB ERA25LA123](https://openairdocs.org/ntsb/ERA25LA123.md): Cessna 172C · Argyle, NY · Accident · No injuries · Class 4 · Limited · Final report · Feb 20, 2025 · N1609Y · Substantial damage
  > The mechanic’s incorrect installation of the oil temperature gauge probe in the oil filter adapter and failure to test run the engine for oil leaks after the installation, which resulted in a total loss of oil and the pilot’s decision to perform a…
- [NTSB CEN25LA093](https://openairdocs.org/ntsb/CEN25LA093.md): Robinson Helicopter R22 Beta · Spearman, TX · Accident · Minor injuries · Class 3 · Limited · Final report · Feb 7, 2025 · N7191B · Substantial damage
  > Improperly torqued intake manifold bolts that allowed unmetered air to enter the engine, resulting in an overly lean fuel-air mixture, eventual failure of the No. 3 cylinder intake valve, and a total loss of engine power.
- [NTSB DCA25LA114](https://openairdocs.org/ntsb/DCA25LA114.md): Airbus Industrie A319 · Houston, TX · Occurrence · No injuries · Class 3 · Limited · Final report · Feb 2, 2025 · N837UA · No damage
  > The failure of the cabin crew to activate the evacuation alarm and to maintain coordinated communication with the flight crew following the cabin crew’s decision to command an evacuation, which resulted in an engine running during the initial evacuation.…
- [NTSB CEN25LA077](https://openairdocs.org/ntsb/CEN25LA077.md): Piper PA-28-181 · Addison, TX · Accident · No injuries · Class 3 · Limited · Final report · Jan 15, 2025 · N504AF · Substantial damage
  > A partial loss of engine power during takeoff due to the partial blockage of the fuel diaphragm metering stem and the No. 1 cylinder fuel injector nozzle. Contributing to the accident was maintenance that allowed the introduction of debris that resulted in…
- [NTSB WPR25LA070](https://openairdocs.org/ntsb/WPR25LA070.md): Vans RV-7A · Gila Bend, AZ · Accident · Minor injuries · Class 3 · Limited · Final report · Dec 22, 2024 · N1FB · Substantial damage
  > A disconnection of the mixture control linkage during flight, which resulted in fuel starvation and a total loss of engine power. Contributing was the inadequate inspection of the mixture control arm attachment hardware.
- [NTSB CEN25FA056](https://openairdocs.org/ntsb/CEN25FA056.md): Zenith Zodiac CH601 · Columbia, IL · Accident · Serious injuries · Class 3 · Field · Final report · Dec 8, 2024 · N9853M · Destroyed
  > The pilot’s failure to secure the engine oil filter following maintenance, which resulted in oil starvation, a total loss of engine power, and impact with terrain.
- [NTSB CEN25LA053](https://openairdocs.org/ntsb/CEN25LA053.md): Piper PA-28R-200 · Boscobel, WI · Accident · No injuries · Class 3 · Limited · Final report · Dec 2, 2024 · N41997 · Substantial damage
  > The ice obstruction of the engine oil breather tube and alternate air outlet, which resulted in a failure of the crankcase oil seal and loss of engine oil. Contributing to the accident was the incorrect engine oil breather tube installed in the airplane by…
- [NTSB CEN25LA018](https://openairdocs.org/ntsb/CEN25LA018.md): Piper PA-32R-301 · Van, TX · Accident · Minor injuries · Class 3 · Limited · Final report · Oct 17, 2024 · N81481 · Substantial damage
  > The mechanic’s improper maintenance of the engine’s air induction scat duct, which collapsed during the flight and resulted in a loss of engine power.
- [NTSB CEN25FA006](https://openairdocs.org/ntsb/CEN25FA006.md): Beech C99 · Norfolk, NE · Accident · 1 fatal · Class 3 · Field · Final report · Oct 8, 2024 · N130GP · Destroyed
  > The pilot’s failure to maintain adequate airspeed following a partial loss of engine power during takeoff, which resulted in a loss of airplane control. Contributing to the accident was the fatigue failure of the compressor turbine fan disk blade.
- [NTSB ERA24LA380](https://openairdocs.org/ntsb/ERA24LA380.md): Piper PA32 · Baltimore, MD · Accident · No injuries · Class 3 · Limited · Final report · Sep 14, 2024 · N6FT · Substantial damage
  > The undetected worn internal parts of the on-condition carburetor, which restricted movement of the float, resulting in fuel starvation. Contributing to the severity of the accident was the pilot’s delayed reduction of the throttle when performing a forced…
- [NTSB CEN24LA354](https://openairdocs.org/ntsb/CEN24LA354.md): Cessna 170A · Marshall, IN · Accident · Minor injuries · Class 3 · Limited · Final report · Sep 11, 2024 · N1249D · Substantial damage
  > The fatigue fracture of the No. 6 piston connecting rod, which resulted in a loss of engine power.
- [NTSB CEN24LA350](https://openairdocs.org/ntsb/CEN24LA350.md): Cessna 172 · Englewood, CO · Accident · Minor injuries · Class 3 · Limited · Final report · Sep 11, 2024 · N20747 · Substantial damage
  > A partial loss of engine power due to fuel-oil contamination of the fuel injection servo.
- [NTSB CEN24LA333](https://openairdocs.org/ntsb/CEN24LA333.md): Zenith Zodiac CH601 XL · Odessa, MO · Accident · Minor injuries · Class 3 · Limited · Final report · Sep 2, 2024 · N624RJ · Substantial damage
  > Overheating of the engine coolant for reasons that could not be determined, which resulted in a precautionary off-airport landing, during which the airplane sustained substantial damage.
- [NTSB WPR24LA267](https://openairdocs.org/ntsb/WPR24LA267.md): Piper PA-28R-201T · Sacramento, CA · Accident · Minor injuries · Class 3 · Limited · Final report · Aug 4, 2024 · N135DG · Substantial damage
  > A loss of engine power during the initial climb due to the detachment of the turbocharger’s inlet sleeve as a result of the installation of an incorrect sleeve clamp.
- [NTSB ERA24LA333](https://openairdocs.org/ntsb/ERA24LA333.md): Cirrus Design SR20 · Egg Harbor City, NJ · Accident · No injuries · Class 3 · Limited · Final report · Jul 31, 2024 · N124RR · Substantial damage
  > A partial loss of engine power due to the fatigue failure of the alternate air valve, which separated and partially obstructed the engine’s induction system.
- [NTSB ERA24LA330](https://openairdocs.org/ntsb/ERA24LA330.md): Raytheon A36 · Naples, FL · Accident · No injuries · Class 3 · Limited · Final report · Jul 29, 2024 · N934PC · Substantial damage
  > Contamination of the airplane’s fuel system with debris, which resulted in restricted fuel flow through multiple fuel injectors and the subsequent partial loss of engine power.
- [NTSB WPR24LA261](https://openairdocs.org/ntsb/WPR24LA261.md): Aeronca 11AC · Winchester, CA · Accident · No injuries · Class 3 · Limited · Final report · Jul 27, 2024 · N86270 · Substantial damage
  > A total loss of engine power due to a fatigue fracture of the crankshaft.
- [NTSB WPR24LA260](https://openairdocs.org/ntsb/WPR24LA260.md): Kitfox Series V · La Grande, OR · Accident · No injuries · Class 3 · Limited · Final report · Jul 23, 2024 · N53562 · Substantial damage
  > Separation of the propeller blades from progressive damage at the blade roots due to overtightening of the hub bolts.
- [NTSB ERA24FA310](https://openairdocs.org/ntsb/ERA24FA310.md): Williams John Titan T-51 Mustang · Geneva, OH · Accident · 1 fatal · Class 3 · Field · Final report · Jul 21, 2024 · N751TX · Substantial damage
  > A sudden propeller overspeed and subsequent separation of the propeller blades and hub, while maneuvering at high speed and at low altitude, which resulted in a collision with a tree during the subsequent forced landing attempt.
- [NTSB CEN24LA269](https://openairdocs.org/ntsb/CEN24LA269.md): Piper PA-36-375 · Avoca, NE · Accident · No injuries · Class 3 · Limited · Final report · Jul 16, 2024 · N2386X · Substantial damage
  > A partial loss of engine power due to the loose left magneto which resulted in erratic engine timing.
- [NTSB WPR24LA229](https://openairdocs.org/ntsb/WPR24LA229.md): Cessna 172N · San Diego, CA · Accident · Minor injuries · Class 3 · Limited · Final report · Jul 2, 2024 · N74C · Substantial damage
  > A failure of the No. 2 cylinder due to fatigue cracking as the result of an undersized fillet radius around the edge of the cylinder head dome.
- [NTSB CEN24LA242](https://openairdocs.org/ntsb/CEN24LA242.md): Cessna 310R · Duluth, MN · Accident · No injuries · Class 3 · Limited · Final report · Jun 27, 2024 · N5080J · Substantial damage
  > The failure of the left engine induction coupling during takeoff, which resulted in a total loss of left engine power and an uncommanded left yaw/roll due to asymmetrical thrust and increased drag, from which the pilot had insufficient altitude to recover…
- [NTSB ERA24LA276](https://openairdocs.org/ntsb/ERA24LA276.md): Snyder Searey · New Ipswich, NH · Accident · Minor injuries · Class 3 · Limited · Final report · Jun 25, 2024 · N453TS · Substantial damage
  > A total loss of engine power due to the exhaust muffler and tailpipe assembly separating from its attach points and impacting the propeller.
- [NTSB WPR24LA205](https://openairdocs.org/ntsb/WPR24LA205.md): Replica PA-12 Replica · Douglas, WY · Accident · Minor injuries · Class 3 · Limited · Final report · Jun 22, 2024 · N406Z · Substantial damage
  > A loss of power due to fuel exhaustion as a result of the pilot’s failure to calibrate the fuel flow indicator.
- [NTSB WPR24LA210](https://openairdocs.org/ntsb/WPR24LA210.md): Lancair LC42-550FG · Humboldt Bay, CA · Accident · No injuries · Class 3 · Limited · Final report · Jun 20, 2024 · N141PB · Substantial damage
  > Maintenance personnel’s incorrect installation of an engine rocker cover gasket, which resulted in oil exhaustion and subsequent loss of engine power during the initial climb.
- [NTSB CEN24FA218](https://openairdocs.org/ntsb/CEN24FA218.md): Cessna 172 · Gainesville, TX · Accident · 1 fatal · Class 3 · Field · Final report · Jun 12, 2024 · N656MA · Substantial damage
  > The fuel pump manufacturer’s improper torquing of screws on the engine-driven fuel pump, which resulted in a disruption in the fuel system and a loss of engine power on initial climb.
- [NTSB ERA24LA239](https://openairdocs.org/ntsb/ERA24LA239.md): Cessna 150 · San Juan, PR · Accident · Serious injuries · Class 3 · Limited · Final report · Jun 1, 2024 · N6198K · Substantial damage
  > A partial loss of engine power due to the failure of the No. 2 cylinder rocker shaft bosses from fatigue cracking.
- [NTSB ERA24LA230](https://openairdocs.org/ntsb/ERA24LA230.md): Piper PA-28-151 · Hope Mills, NC · Accident · Serious injuries · Class 3 · Limited · Final report · May 26, 2024 · N33563 · Substantial damage
  > A loss of engine performance due to carbon fouling of three spark plugs that, when combined with the airplane’s high gross weight condition, resulted in a collision with trees and terrain.
- [NTSB DCA24LA200](https://openairdocs.org/ntsb/DCA24LA200.md): Aergility Atlis 1 · Dunnellon, FL · Accident · No injuries · Class 4 · Limited · Final report · May 24, 2024 · N237KG · Substantial damage
  > An intermittent electrical failure that switched two motor controllers off, resulting in a loss of hover capability and impact with the ground.
- [NTSB CEN24LA211](https://openairdocs.org/ntsb/CEN24LA211.md): Cessna 172RG · Chandeleur Island, LA · Accident · No injuries · Class 3 · Limited · Final report · May 22, 2024 · N751DW · Substantial damage
  > A fatigue failure of the engine oil pressure line, which resulted in the loss of engine oil during the flight and subsequent damage to the nose landing gear support structure during the precautionary landing.
- [NTSB CEN24LA193](https://openairdocs.org/ntsb/CEN24LA193.md): Air Tractor AT-502 · Covert, KS · Accident · No injuries · Class 3 · Limited · Final report · May 19, 2024 · N15189 · Substantial damage
  > The improper maintenance of the fuel control unit, which resulted in air leakage and a loss of control of fuel flow to the engine.
- [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 ANC24LA025](https://openairdocs.org/ntsb/ANC24LA025.md): Cessna 120 · Talkeetna, AK · Accident · No injuries · Class 3 · Limited · Final report · Apr 21, 2024 · N77032 · Substantial damage
  > A degraded ignition system, which resulted in a total loss of engine power. Contributing to the accident was maintenance personnel’s inadequate inspection of the ignition system.
- [NTSB WPR24LA121](https://openairdocs.org/ntsb/WPR24LA121.md): Kitfox Series 5 · Yucca Grove, CA · Accident · No injuries · Class 3 · Limited · Final report · Apr 5, 2024 · N743JT · Substantial damage
  > The pilot’s improper repair of the oil sump, which resulted in a loss of oil pressure and collision with terrain during a precautionary landing.
- [NTSB CEN24LA140](https://openairdocs.org/ntsb/CEN24LA140.md): Cessna T210 · San Saba, TX · Accident · No injuries · Class 3 · Limited · Final report · Mar 25, 2024 · N498TB · Substantial damage
  > A total loss of engine power due to multiple connecting rod failures from oil starvation.
- [NTSB ANC24LA017](https://openairdocs.org/ntsb/ANC24LA017.md): MD Helicopter 369E/500E · Kekaha, HI · Accident · Serious injuries · Class 3 · Limited · Final report · Feb 27, 2024 · N633JH · Substantial damage
  > Maintenance personnel’s noncompliance with maintenance manual procedures that required the removal of the overrunning clutch output bearing during the regreasing procedure, which resulted in inadequate regreasing of the bearing and the subsequent failure of…
- [NTSB CEN24LA120](https://openairdocs.org/ntsb/CEN24LA120.md): Pulsar I · Patterson, LA · Accident · Serious injuries · Class 3 · Limited · Final report · Feb 25, 2024 · N72BH · Destroyed
  > The non-certificated pilot’s decision to operate an unairworthy engine, which led to cylinder failure and a loss of engine power.
- [NTSB WPR24LA087](https://openairdocs.org/ntsb/WPR24LA087.md): Mooney M20K · Burley, ID · Accident · Minor injuries · Class 3 · Limited · Final report · Feb 10, 2024 · C-FLQQ · Substantial damage
  > The failure of the pilot to fly a stabilized approach during an emergency landing with a tailwind, which resulted in a bounced landing and subsequent runway excursion during the landing roll. Contributing to the accident was the pilot’s inadequate preflight…
- [NTSB ERA24FA110](https://openairdocs.org/ntsb/ERA24FA110.md): Bombardier CL-600-2B16 · Naples, FL · Accident · 2 fatal · Class 3 · Field · Final report · Feb 9, 2024 · N823KD · Destroyed
  > Corrosion of both engines’ variable geometry (VG) system components, which led to their operation in an off-schedule position and resulted in near-simultaneous sub-idle rotating compressor stalls on approach, subsequent loss of thrust in both engines, and an…
- [NTSB WPR24LA074](https://openairdocs.org/ntsb/WPR24LA074.md): Beck Michael J Sonex · Auburn, WA · Accident · No injuries · Class 3 · Limited · Final report · Jan 16, 2024 · N920MB · Substantial damage
  > Water contamination within the fuel regulator air-reference system, which resulted in improper fuel metering and a loss of engine power during initial climb.
- [NTSB WPR24LA076](https://openairdocs.org/ntsb/WPR24LA076.md): Piper PA-28-181 · Colorado City, AZ · Accident · No injuries · Class 3 · Limited · Final report · Jan 13, 2024 · N2886X · Substantial damage
  > The loss of engine power due to the failure of the No. 2 piston pin plug, which resulted in oil starvation and subsequent failure of the No. 3 connecting rod. Contributing to the accident was the inadequate engine inspections by maintenance personnel.
- [NTSB CEN24LA088](https://openairdocs.org/ntsb/CEN24LA088.md): Eurocopter AS 350 B2 · Spofford, TX · Accident · Minor injuries · Class 3 · Limited · Final report · Jan 12, 2024 · N204TX · Substantial damage
  > The fatigue failure of the fuel control unit control lever arm, which resulted in fuel starvation, and a loss of engine power.

Next page: https://openairdocs.org/ntsb-events/340/sequence.md?status=final&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."completionStatus" = 'Completed'
  AND c."mKey" IN (SELECT s.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' s WHERE s."tier2Number" = '340' AND s.case_mkey IN (SELECT case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' WHERE "isDefiningEvent"))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-events/340/sequence?status=final

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