# NTSB investigations: Scheduled/routine maintenance

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 7 · 320 cases

## Latest cases

- [NTSB ANC25LA059](https://openairdocs.org/ntsb/ANC25LA059.md): Cessna 170B · Denali Park, AK · Accident · No injuries · Class 4 · Limited · Final report · Jun 25, 2025 · N2655D · Substantial damage
  > The failure of the left main landing gear spring due to a fatigue fracture during landing on uneven terrain.
- [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 ANC25LA028](https://openairdocs.org/ntsb/ANC25LA028.md): Piper PA-28-140 · Royal Kunia, HI · Accident · Minor injuries · Class 3 · Limited · Final report · Mar 27, 2025 · N261FC · Substantial damage
  > Improper alteration of the crankshaft propeller flange at an unknown time, which resulted in an in-flight separation of the propeller assembly.
- [NTSB ERA25LA122](https://openairdocs.org/ntsb/ERA25LA122.md): Allyn Kaste Rans S-19 (KIT) · Doylestown, PA · Accident · No injuries · Class 4 · Limited · Final report · Feb 10, 2025 · N258DK · Substantial damage
  > The pilot’s inadequate maintenance and preflight inspection.
- [NTSB ANC24LA077](https://openairdocs.org/ntsb/ANC24LA077.md): Robinson R44 · Honolulu, HI · Accident · No injuries · Class 3 · Limited · Final report · Aug 19, 2024 · N740RH · Substantial damage
  > A failure of the flex plate yoke flange assembly due to incorrectly torqued bolts. Contributing was the maintenance personnel’s inadequate inspection of the tail rotor flex plate assembly.
- [NTSB DCA24LA293](https://openairdocs.org/ntsb/DCA24LA293.md): Boeing 747-4HQF · Istanbul, Türkiye · Accident · No injuries · Class 4 · Limited · Final report · Aug 17, 2024 · N782CK · Substantial damage
  > The fatigue failure of multiple hinge ribs associated with the right outboard aileron, which resulted in abnormal aileron movement and airframe vibration. Contributing to the failure was the mis-rigged condition of the right outboard aileron, which increased…
- [NTSB WPR24LA275](https://openairdocs.org/ntsb/WPR24LA275.md): Piper PA-30 · Concord, CA · Accident · No injuries · Class 3 · Limited · Final report · Aug 9, 2024 · N8458Y · Substantial damage
  > The failure of the main landing gear to extend and lock for reasons that could not be determined based on the available information. Contributing to the accident was a mechanical failure of the manual landing gear release mechanism due to inadequate clearance…
- [NTSB WPR24LA268](https://openairdocs.org/ntsb/WPR24LA268.md): Piper PA-34-220T · Minden, NV · Accident · No injuries · Class 3 · Limited · Final report · Aug 5, 2024 · N4145B · Substantial damage
  > The pilot’s improper preflight inspection of the stabilator trim position, which resulted in a porpoised landing. Contributing to the accident was the maintenance personnel’s improper maintenance of the stabilator trim shaft.
- [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 CEN24LA286](https://openairdocs.org/ntsb/CEN24LA286.md): Piper PA46 · Radisson, WI · Accident · No injuries · Class 3 · Limited · Final report · Jul 28, 2024 · N4646G · Substantial damage
  > The non-certificated mechanic’s failure to properly tighten and torque the fuel system pressure test port cap, which resulted in a total loss of engine power, and a subsequent forced landing.
- [NTSB ERA24LA302](https://openairdocs.org/ntsb/ERA24LA302.md): Piper PA-32RT-300T · Myerstown, PA · Accident · No injuries · Class 3 · Limited · Final report · Jul 4, 2024 · N184VA · Substantial damage
  > The failure of maintenance personnel to properly secure a B-nut on the No. 5 cylinder fuel injector line, resulting in a fuel leak and engine fire.
- [NTSB CEN24LA236](https://openairdocs.org/ntsb/CEN24LA236.md): Cirrus Design SR22T · Boerne, TX · Accident · No injuries · Class 3 · Limited · Final report · Jun 23, 2024 · N87AQ · Substantial damage
  > Maintenance personnel’s inadequate adjustment of fuel flow, which resulted in an excessively rich mixture, a rough-running engine, and a subsequent partial loss of engine power.
- [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 DCA24LA210](https://openairdocs.org/ntsb/DCA24LA210.md): Boeing 767-316 ER · Milan, IN · Accident · No injuries · Class 4 · Limited · Final report · Jun 17, 2024 · C-FCJU · Substantial damage
  > One or more latches were not fully re-engaged after a service check which resulted in the auxiliary power unit (APU) doors separating from the aircraft during climb out.
- [NTSB WPR24LA198](https://openairdocs.org/ntsb/WPR24LA198.md): Warren B Cox COX Breezy · Albuquerque, NM · Accident · Minor injuries · Class 3 · Limited · Final report · Jun 13, 2024 · N409WC · Substantial damage
  > The pilot’s exceedance of the airplane’s critical angle of attack while maneuvering for landing following a partial loss of engine power after takeoff, which resulted in an aerodynamic stall and loss of control. Contributing to the accident was maintenance…
- [NTSB ANC24LA048](https://openairdocs.org/ntsb/ANC24LA048.md): Stinson 108-2 · Bethel, AK · Accident · No injuries · Class 4 · Limited · Final report · Jun 1, 2024 · N299C · Substantial damage
  > The uncertificated pilot’s decision to fly an unairworthy airplane and his failure to maintain directional control during landing, which resulted in a landing gear collapse. Contributing was the failure of the right main landing gear oleo strut.
- [NTSB CEN24LA184](https://openairdocs.org/ntsb/CEN24LA184.md): Piper PA-22 · Enderlin, ND · Accident · Minor injuries · Class 3 · Limited · Final report · May 13, 2024 · N669A · Substantial damage
  > The pilot’s failure to properly inspect and sump the fuel system before the flight and the maintenance personnel’s inadequate maintenance of the fuel system which resulted in fuel starvation and the subsequent loss of engine power due to the contamination of…
- [NTSB ERA24LA198](https://openairdocs.org/ntsb/ERA24LA198.md): Cessna 172 · Palatka, FL · Accident · No injuries · Class 3 · Limited · Final report · Apr 29, 2024 · N99442 · Substantial damage
  > The failure of the nose oil seal to remain secure in the engine crankcase, which resulted in a loss of engine oil and partial loss of engine power.
- [NTSB ERA24LA190](https://openairdocs.org/ntsb/ERA24LA190.md): Beech B24R · Lumberton Township, NJ · Accident · Minor injuries · Class 3 · Limited · Final report · Apr 22, 2024 · N53EM · Substantial damage
  > The pilot/owner’s failure to ensure adequate maintenance of the airplane, which resulted in a partial loss of engine power during takeoff.
- [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 CEN24LA162](https://openairdocs.org/ntsb/CEN24LA162.md): American Champion 7ECA · Longview, TX · Accident · No injuries · Class 3 · Limited · Final report · Apr 12, 2024 · N793L · Substantial damage
  > The rudder post’s failure due to corrosion fatigue. Contributing to the accident were the misalignment of the rudder hinge components, which produced mechanical binding and elevated localized stress, and a compromised the protective coating, which allowed…
- [NTSB ERA24FA157](https://openairdocs.org/ntsb/ERA24FA157.md): Piper PA-44-180 · Fort Pierce North, FL · Accident · 1 fatal · Class 3 · Field · Final report · Mar 30, 2024 · N595ND · Substantial damage
  > The flight instructor’s failure to maintain control of the multiengine airplane after a partial loss of engine power on one engine during a go-around, which resulted in an aerodynamic stall. Contributing to the accident was the mechanic’s failure to check the…
- [NTSB CEN24LA137](https://openairdocs.org/ntsb/CEN24LA137.md): Enstrom Helicopter 280C · Port Lavaca, TX · Accident · No injuries · Class 3 · Limited · Final report · Mar 16, 2024 · N280WR · Substantial damage
  > The pilot’s improper manual engine mixture management which resulted in a loss of power. Contributing to the accident was the mechanic’s improper setting of the idle mixture adjustment and the pilot’s decision to take off with a known mechanical deficiency.
- [NTSB ERA24LA128](https://openairdocs.org/ntsb/ERA24LA128.md): Cub Crafters PA18-150 · Edgewater, FL · Accident · No injuries · Class 3 · Limited · Final report · Mar 1, 2024 · N143CC · Substantial damage
  > Maintenance personnel’s failure to detect the worn aileron cable during the most recent inspections, which resulted in the separation of the aileron control cable and a subsequent loss of airplane control during landing.
- [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 WPR24LA093](https://openairdocs.org/ntsb/WPR24LA093.md): Bell 47G-3B-1 · Garey, CA · Accident · Minor injuries · Class 3 · Limited · Final report · Feb 23, 2024 · N2618W · Substantial damage
  > Maintenance personnel’s failure to properly check the torque paint on a fuel control unit B-nut, which resulted in the loosening of the B-nut, a loss of engine power at a low altitude, and a subsequent impact with terrain.
- [NTSB WPR24LA061](https://openairdocs.org/ntsb/WPR24LA061.md): Glasair SH2 · Prescott, AZ · Accident · No injuries · Class 3 · Limited · Final report · Dec 26, 2023 · N29TT · Substantial damage
  > Loss of directional control during landing due to an improperly constructed and maintained tailwheel locking assembly.
- [NTSB CEN24LA036](https://openairdocs.org/ntsb/CEN24LA036.md): Textron 172S · Erie, CO · Accident · No injuries · Class 3 · Limited · Final report · Nov 9, 2023 · N1817E · Substantial damage
  > A partial loss of engine power while maneuvering at a low altitude due to a stuck exhaust valve.
- [NTSB CEN24LA011](https://openairdocs.org/ntsb/CEN24LA011.md): Cirrus SR22 · Red Oak, IA · Accident · No injuries · Class 3 · Limited · Final report · Oct 15, 2023 · N6JA · Substantial damage
  > The fatigue failure of the exhaust valve due to excessive combustion deposits, which resulted in a partial loss of engine power. Contributing to the accident was the pilot’s failure to ensure that the required scheduled maintenance was completed.
- [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 WPR23LA350](https://openairdocs.org/ntsb/WPR23LA350.md): Cessna U206C · Challis, ID · Accident · No injuries · Class 3 · Limited · Final report · Sep 20, 2023 · N3923G · Substantial damage
  > The failure of the left main landing gear spring assembly due to a fatigue crack. Contributing to the accident was the improper maintenance on the landing gear spring assembly which allowed corrosion to develop.
- [NTSB WPR23LA349](https://openairdocs.org/ntsb/WPR23LA349.md): Cessna 172N · Compton, CA · Accident · Minor injuries · Class 3 · Limited · Final report · Sep 20, 2023 · N733ZN · Substantial damage
  > The total loss of engine power on takeoff due to water-contaminated fuel. Contributing to the accident was the inadequately maintained fuel system, which resulted in water entering the fuel tanks through the filler caps.
- [NTSB ANC23LA078](https://openairdocs.org/ntsb/ANC23LA078.md): Rhodes Steven D SR3500 · Nenana, AK · Accident · No injuries · Class 3 · Limited · Final report · Sep 17, 2023 · N907W · Substantial damage
  > A total loss of engine power due to fuel starvation. Contributing was the owner/builder’s inadequate maintenance.
- [NTSB ERA23LA347](https://openairdocs.org/ntsb/ERA23LA347.md): Piper PA28 · Knoxville, TN · Accident · No injuries · Class 3 · Limited · Final report · Jul 27, 2023 · N15417 · Substantial damage
  > An in-flight fire that resulted from an inadequate 100-hr inspection, which failed to detect and correct improper electrical cable routing in the engine compartment.
- [NTSB ERA23LA293](https://openairdocs.org/ntsb/ERA23LA293.md): Hughes 369D · Waldorf, MD · Accident · Minor injuries · Class 3 · Limited · Final report · Jul 9, 2023 · N5027P · Substantial damage
  > Fatigue failure of the overrunning clutch outer race and a subsequent inflight loss of power due to abnormal bending loads as a result of improper reassembly of the clutch subassembly following maintenance and the presence of microcracks on the clutch’s outer…
- [NTSB CEN23LA261](https://openairdocs.org/ntsb/CEN23LA261.md): Quad City Challenger · Cedar Creek, MO · Accident · No injuries · Class 3 · Limited · Final report · Jun 23, 2023 · UNREG · Substantial damage
  > A seizure of the power takeoff piston due to inadequate maintenance to the lubrication system, which resulted in a lack of oil lubrication and subsequent engine failure.
- [NTSB WPR23LA197](https://openairdocs.org/ntsb/WPR23LA197.md): Cessna 210 · Redding, CA · Accident · Minor injuries · Class 3 · Limited · Final report · May 20, 2023 · N9433T · Substantial damage
  > A fuel leak caused by an age-degraded fuel pressure sender hose, which resulted in fuel starvation and a loss of engine power. Contributing to the accident was inadequate maintenance.
- [NTSB ERA23LA218](https://openairdocs.org/ntsb/ERA23LA218.md): Piper PA-28-180 · Greenville, NC · Accident · Serious injuries · Class 3 · Limited · Final report · May 5, 2023 · N180LR · Substantial damage
  > Inadequate maintenance by the operator and maintenance personnel, which resulted in a loss of engine power due to oil starvation.
- [NTSB CEN23LA170](https://openairdocs.org/ntsb/CEN23LA170.md): Luscombe 8F · Palmer, TX · Accident · No injuries · Class 3 · Limited · Final report · Apr 30, 2023 · N1113B · Substantial damage
  > The installation of an unapproved rudder control cable, which resulted in a fatigue failure and subsequent loss of rudder control during cruise flight. Contributing to the accident was the mechanic’s inadequate inspection of the rudder control system.
- [NTSB CEN23LA166](https://openairdocs.org/ntsb/CEN23LA166.md): Protech PT2 · Columbia, MS · Accident · No injuries · Class 3 · Limited · Final report · Apr 25, 2023 · N44048 · Substantial damage
  > The pilot’s lack of proper maintenance, which allowed the fuel filters to become obstructed, leading to fuel starvation and a subsequent engine power loss.
- [NTSB ERA23LA202](https://openairdocs.org/ntsb/ERA23LA202.md): Rockwell International 112 · Miami, FL · Accident · No injuries · Class 3 · Limited · Final report · Apr 18, 2023 · N12RX · Substantial damage
  > Failure of the right main landing gear due to inadequate hydraulic pressure as result of a torn O-ring that was installed on the hydraulic pack’s check valve during overhaul.
- [NTSB ERA23LA197](https://openairdocs.org/ntsb/ERA23LA197.md): Cessna 177RG · Crestview, FL · Accident · Serious injuries · Class 3 · Limited · Final report · Apr 14, 2023 · N7542V · Substantial damage
  > The total loss of engine power due to the loosening and separation of the No. 1 connecting rod cap nuts in flight, resulting in catastrophic internal engine damage. Contributing to the accident was the pilot/owner’s failure to comply with the engine…
- [NTSB ERA23LA144](https://openairdocs.org/ntsb/ERA23LA144.md): Piper PA-28R-200 · Slaughters, KY · Accident · No injuries · Class 3 · Limited · Final report · Mar 2, 2023 · N9420N · Substantial damage
  > Maintenance personnel’s failure to secure the fuel strainer bowl with safety wire, which resulted in the fuel strainer bowl leaking and starving the engine of fuel. Also causal was the obstruction of two fuel injector nozzles.
- [NTSB WPR23LA116](https://openairdocs.org/ntsb/WPR23LA116.md): Piper PA-24-260 · San Jose, CA · Accident · No injuries · Class 3 · Limited · Final report · Feb 20, 2023 · N9267P · Substantial damage
  > A landing gear collapse due to an inadequately maintained landing gear extension and retraction system.
- [NTSB CEN23LA103](https://openairdocs.org/ntsb/CEN23LA103.md): Cessna 425 · Bismarck, ND · Accident · Minor injuries · Class 3 · Limited · Final report · Feb 6, 2023 · N425Z · Substantial damage
  > A loss of braking due to inadequate servicing of brake fluid by the pilot/mechanic, which resulted in a loss of airplane control on the ground.
- [NTSB CEN23LA025](https://openairdocs.org/ntsb/CEN23LA025.md): Bell 206 · Greenville, IL · Accident · Minor injuries · Class 3 · Limited · Final report · Nov 3, 2022 · N61KH · Substantial damage
  > The mechanic’s failure to inspect and clean the entire fuel nozzle assembly in accordance with the engine maintenance manual, which resulted in fuel starvation and a partial loss of engine power, an autorotation, and a hard landing.
- [NTSB CEN23LA014](https://openairdocs.org/ntsb/CEN23LA014.md): Diamond Aircraft Ind DA 62 · Dallas, TX · Accident · No injuries · Class 3 · Limited · Final report · Oct 15, 2022 · N84LT · Substantial damage
  > A total loss of airplane electrical power for undetermined reasons, which resulted in a complete loss of engine power to both engines. Contributing was the worn main battery and the incorrectly wired ECU backup batteries.
- [NTSB ANC22LA080](https://openairdocs.org/ntsb/ANC22LA080.md): Cessna 180A · Skwentna, AK · Accident · 1 fatal · Class 3 · Limited · Final report · Sep 25, 2022 · N9728B · Substantial damage
  > The failure of the landing gear float due to inadequate maintenance of the floats and corrosion.
- [NTSB ERA22LA410](https://openairdocs.org/ntsb/ERA22LA410.md): Cessna U206 · Buckland, AK · Accident · No injuries · Class 3 · Limited · Final report · Sep 9, 2022 · N8019Z · Substantial damage
  > The installation of incompatible rocker arms and rocker arm bushings during an engine overhaul, which resulted in a complete loss of engine power.
- [NTSB WPR22LA334](https://openairdocs.org/ntsb/WPR22LA334.md): Buxbaum Mark Edward Long EZ · Medicine Bow, WY · Accident · Serious injuries · Class 3 · Limited · Final report · Sep 5, 2022 · N444MR · Substantial damage
  > A partial loss of engine power due to the fatigue fracture of the No. 4 exhaust valve head.

Next page: https://openairdocs.org/ntsb-findings/02062010/cases.md?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 f.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_findings.parquet' f WHERE starts_with(f."findingCode", '02062010'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-findings/02062010/cases

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