# NTSB investigations: Maintenance/inspections, general

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 3 · 103 cases

## Latest cases

- [NTSB ERA25LA064](https://openairdocs.org/ntsb/ERA25LA064.md): AMS Flight D O O Carat A · Centralhatchee, GA · Accident · Serious injuries · Class 3 · Limited · Final report · Nov 20, 2024 · N17GF · Substantial damage
  > Maintenance personnel’s failure to comply with the engine manufacturer’s guidance, which resulted in improper valvetrain clearances, unseating of the intake valve keepers, and a total loss of engine power.
- [NTSB ERA25LA012](https://openairdocs.org/ntsb/ERA25LA012.md): Piper PA28 · Louisville, KY · Accident · Serious injuries · Class 3 · Limited · Final report · Oct 11, 2024 · N5006W · Substantial damage
  > A total loss of engine power for undetermined reasons.
- [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 CEN24LA315](https://openairdocs.org/ntsb/CEN24LA315.md): Grumman American Avn. AA-5B · Camdenton, MO · Accident · No injuries · Class 3 · Limited · Final report · Jul 11, 2024 · N23JK · Substantial damage
  > The inadequate maintenance of the seat locking mechanism, which resulted in the pilot’s seat sliding back during takeoff and a subsequent loss of control.
- [NTSB CEN23FA314](https://openairdocs.org/ntsb/CEN23FA314.md): Piper PA-31P · Kearney, MO · Accident · 1 fatal · Class 3 · Field · Final report · Jul 20, 2023 · N200RA · Destroyed
  > The pilot’s decision to operate an airplane with known fuel leaks, his failure to conduct an engine run-up before takeoff, his subsequent failure to abort the takeoff, and the mechanic’s inadequate maintenance, which resulted in a partial loss of right engine…
- [NTSB CEN23LA255](https://openairdocs.org/ntsb/CEN23LA255.md): Piper PA-25-235 · Westhope, ND · Accident · Serious injuries · Class 4 · Limited · Final report · Jun 22, 2023 · N7419Z · Substantial damage
  > The pilot’s failure to maintain aircraft control that resulted in an impact with terrain after takeoff.
- [NTSB ENG23LA030](https://openairdocs.org/ntsb/ENG23LA030.md): Gulfstream Aerospace G-IV · Sioux City, IA · Incident · No injuries · Class 3 · Limited · Final report · Jun 17, 2023 · N926TT · Minor damage
  > A No. 2 (right) engine failure due to a spinner fairing separation and subsequent impact with the fan blades that resulted in a midspan fracture of one fan blade. The spinner fairing separated as a result of a fatigue crack that originated from the heat…
- [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 CEN23LA062](https://openairdocs.org/ntsb/CEN23LA062.md): Mooney M20K · Addison, TX · Accident · Serious injuries · Class 3 · Limited · Final report · Dec 13, 2022 · N231GZ · Substantial damage
  > The fatigue failure of the engine’s camshaft gear teeth which resulted in a loss of all engine power. Contributing to the accident was the non-compliance with the engine manufacturer’s recommended service bulletin.
- [NTSB ERA22LA242](https://openairdocs.org/ntsb/ERA22LA242.md): Aeronca 7EC · Putnam Valley, NY · Accident · No injuries · Class 3 · Limited · Final report · May 25, 2022 · N7410B · Substantial damage
  > A total loss of engine power during cruise flight due to fuel starvation resulting from obstructed forward and aft vent outlets in the left fuel tank.
- [NTSB ERA22LA117](https://openairdocs.org/ntsb/ERA22LA117.md): Hughes 369D · Bel Air, MD · Accident · No injuries · Class 3 · Limited · Final report · Feb 9, 2022 · N9159F · Substantial damage
  > A loss of engine power due to bearing failures in the turbine section resulting from a fatigue fracture of the oil supply line that fed oil to the Nos. 6 and 7 bearings. The oil line failure led to rapid deterioration of the bearings from oil starvation.…
- [NTSB WPR22LA090](https://openairdocs.org/ntsb/WPR22LA090.md): Textron TTX Inc. T240 · Ravendale, CA · Accident · Minor injuries · Class 3 · Limited · Final report · Jan 28, 2022 · N420WT · Substantial damage
  > The inadequate maintenance and inspection of the engine induction system, which resulted in the separation of the right induction tube from the turbocharger compressor outlet and the subsequent loss of engine power during departure.
- [NTSB CEN22LA068](https://openairdocs.org/ntsb/CEN22LA068.md): CHR International Safari 400 · McKinney, TX · Accident · Serious injuries · Class 4 · Limited · Final report · Dec 9, 2021 · N666JS · Substantial damage
  > The pilot did not remove the cyclic control lock during preflight, which resulted in a loss of control during the initial hover.
- [NTSB ERA21LA170](https://openairdocs.org/ntsb/ERA21LA170.md): Mooney M20C · College Park, MD · Accident · No injuries · Class 3 · Limited · Final report · Apr 3, 2021 · N2953L · Substantial damage
  > Improper maintenance of the airplane by its owners and their failure to have qualified maintenance personnel determine the root cause of water infiltration into the fuel system. Also causal was the pilot’s inadequate preflight inspection, which failed to…
- [NTSB CEN21LA138](https://openairdocs.org/ntsb/CEN21LA138.md): Cessna 182F · Millville, IA · Accident · Minor injuries · Class 3 · Limited · Final report · Feb 24, 2021 · N3209U · Substantial damage
  > The inadequate maintenance/inspection of the airplane, which resulted in a total loss of engine power due to oil starvation.
- [NTSB CEN20CA139](https://openairdocs.org/ntsb/CEN20CA139.md): Rans S-12 Airaile · Hillrose, CO · Accident · Serious injuries · Data collection · Final report · Apr 4, 2020 · UNREG · Substantial damage
  > The noncertificated pilot's diverted attention while looking at a fire during low-altitude flying, which resulted in a collision with power lines.
- [NTSB CEN20LA041](https://openairdocs.org/ntsb/CEN20LA041.md): Cessna 525A · Scotts Bluff, NE · Accident · No injuries · Class 3 · Limited · Final report · Dec 18, 2019 · CGOJG · Substantial damage
  > The installation of incorrect mounting hardware to secure the right engine cowl, which resulted in an in-flight separation and impact with the horizontal stabilizer and elevator.
- [NTSB CEN19FA279](https://openairdocs.org/ntsb/CEN19FA279.md): Aero Commander 200 · Howell, MI · Accident · 2 fatal · Class 3 · Field · Final report · Aug 20, 2019 · N200HS · Substantial damage
  > The improper installation of the engine’s metal intake screen, which allowed the filter element to become displaced and subsequently lodge in the intake, blocking intake air and causing the total loss of engine power, at low altitude and low airspeed…
- [NTSB WPR19MA177](https://openairdocs.org/ntsb/WPR19MA177.md): Beech 65-A90 · Mokuleia, HI · Accident · 11 fatal · Class 2 · Major · Final report · Jun 22, 2019 · N256TA · Destroyed
  > The pilot’s aggressive takeoff maneuver, which resulted in an accelerated stall and subsequent loss of control at an altitude that was too low for recovery. Contributing to the accident were (1) the operation of the airplane near its aft center of gravity…
- [NTSB ERA19LA143](https://openairdocs.org/ntsb/ERA19LA143.md): Cessna 175 · Edgefield, SC · Accident · No injuries · Class 3 · Limited · Final report · Apr 4, 2019 · N7622M · Substantial damage
  > The total loss of engine power due to a stuck engine exhaust valve. Contributing to the loss of engine power was the pilot’s failure to properly address the recurring stuck exhaust valve issue.
- [NTSB ANC18LA058](https://openairdocs.org/ntsb/ANC18LA058.md): Robinson R44 · Bettles, AK · Accident · No injuries · Limited investigation · Final report · Jul 29, 2018 · N744AK · Substantial damage
  > Maintenance personnel's application of insufficient preload on the attachment hardware for the idler gear shaft during engine overhaul, which resulted in the dismounting of the idler gear shaft assembly due to wear and deformation and the subsequent total…
- [NTSB ERA18LA181](https://openairdocs.org/ntsb/ERA18LA181.md): Beech 35B33 · Berlin, MD · Accident · Serious injuries · Class 3 · Limited · Final report · Jun 29, 2018 · N9745Y · Substantial damage
  > The failure of the No. 3 cylinder exhaust valve, which resulted in the total loss of engine power during takeoff.
- [NTSB ERA18LA163](https://openairdocs.org/ntsb/ERA18LA163.md): Vans RV4 · Butler, PA · Accident · Minor injuries · Limited investigation · Final report · Jun 7, 2018 · N7765X · Substantial damage
  > The pilot's improper decision to fly the airplane with a known engine problem and his improper modification of the engine control unit fuel delivery software, which led to the engine running too lean and resulted in a total loss of engine power during climb.
- [NTSB CEN18CA072](https://openairdocs.org/ntsb/CEN18CA072.md): Bell Helicopter Textron Canada 407 · Norfolk, NE · Accident · No injuries · Data collection · Final report · Jan 5, 2018 · N214AM · Substantial damage
  > Maintenance personnel’s failure to properly secure the tail rotor drive shaft cover, which resulted in the cover departing the helicopter in flight.
- [NTSB CEN17LA368](https://openairdocs.org/ntsb/CEN17LA368.md): Eris E. Ervin Quicksilver · Cleburne, TX · Accident · 1 fatal · Limited investigation · Final report · Sep 25, 2017 · N5112S · Destroyed
  > An engine loss of power due to fuel starvation from a broken fuel line between the fuel tank and the engine; the loss of engine power prevented the pilot from reaching a suitable landing area. Contributing to the accident was the inadequate maintenance of the…
- [NTSB WPR17LA188](https://openairdocs.org/ntsb/WPR17LA188.md): Robinson Helicopter R44 II · El Dorado Hills, CA · Accident · Minor injuries · Limited investigation · Final report · Aug 26, 2017 · N61NM · Substantial damage
  > Maintenance personnel's inadequate routine maintenance on the helicopter engine, which led to low cylinder compression, improper magneto timing, and camshaft lobe wear, which subsequently resulted in degraded engine performance.
- [NTSB CEN17LA224](https://openairdocs.org/ntsb/CEN17LA224.md): Mckenna SD-1A · Juneau, WI · Accident · No injuries · Limited investigation · Final report · Jun 7, 2017 · N31313 · Substantial damage
  > The pilot’s difficulty controlling the airplane due to his incorrect reinstallation of the wings, which led to a bounced precautionary landing. Contributing to the accident was the failure of the pilot and the mechanic to verify the wings’ angle of incidence.
- [NTSB WPR17LA102](https://openairdocs.org/ntsb/WPR17LA102.md): Piper PA 18A · Coeur D'Alene, ID · Accident · Minor injuries · Limited investigation · Final report · May 8, 2017 · N245KW · Substantial damage
  > The loss of yaw control due to an inadequately compressed rudder swage, which resulted from inadequate maintenance and led to the separation of the forward right rudder cable.
- [NTSB WPR17LA097](https://openairdocs.org/ntsb/WPR17LA097.md): Robinson Helicopter R44 · Santa Barbara, CA · Accident · Serious injuries · Limited investigation · Final report · May 5, 2017 · N981RR · Destroyed
  > A total loss of engine power during cruise flight due to the failure of an engine piston rod for reasons that could not be determined due to extensive damage.
- [NTSB CEN17LA019](https://openairdocs.org/ntsb/CEN17LA019.md): Bellanca 17-31A · Mc Alester, OK · Accident · Serious injuries · Limited investigation · Final report · Oct 16, 2016 · N93668 · Substantial damage
  > A total loss of engine power during initial climb due to fuel starvation.
- [NTSB CEN17LA018](https://openairdocs.org/ntsb/CEN17LA018.md): Piper PA 18-150 · Jasper, TX · Accident · Minor injuries · Limited investigation · Final report · Oct 15, 2016 · N9473D · Substantial damage
  > A partial loss of engine power for reasons that could not be determined, because an examination of the airplane did not identify a specific reason for the loss of engine power.
- [NTSB CEN16LA339](https://openairdocs.org/ntsb/CEN16LA339.md): Rans Coyote S 4 · Clarksville, TX · Accident · Serious injuries · Limited investigation · Final report · Aug 27, 2016 · N8024J · Substantial damage
  > The total loss of engine power due to a deteriorated and disconnected fuel line, which resulted in fuel starvation and a subsequent hard, off-field landing.
- [NTSB WPR16LA141](https://openairdocs.org/ntsb/WPR16LA141.md): Luscombe 8A · Minden, NV · Accident · Minor injuries · Limited investigation · Final report · Jul 17, 2016 · N2759K · Substantial damage
  > The failure of a main landing gear leg during takeoff due to corrosion, which resulted in a nose-over during the subsequent landing on a grassy area.
- [NTSB ERA16LA202](https://openairdocs.org/ntsb/ERA16LA202.md): Bell 407 · Mountain City, TN · Accident · Minor injuries · Limited investigation · Final report · Jun 3, 2016 · N4999 · Substantial damage
  > An incorrect and unapproved repair of the engine compressor diffuser performed by a machinist at a repair facility, which resulted in failure of the compressor diffuser aft plate and a partial loss of engine power.
- [NTSB ERA16LA066](https://openairdocs.org/ntsb/ERA16LA066.md): Raytheon A36 · Fayetteville, NC · Accident · Serious injuries · Limited investigation · Final report · Dec 12, 2015 · N3241N · Substantial damage
  > Maintenance personnel's application of an unapproved sealant to the engine case halves during engine overhaul, contrary to manufacturer's instructions, which resulted in lubrication restriction due to a bearing shift and the subsequent internal failure of the…
- [NTSB CEN16LA033](https://openairdocs.org/ntsb/CEN16LA033.md): Cessna 120 · Gonzales, LA · Accident · Serious injuries · Limited investigation · Final report · Nov 6, 2015 · N2942N · Substantial damage
  > Maintenance personnel’s improper installation of the carburetor during recent maintenance, including the omission of a required cotter pin, which resulted in a total loss of engine power.
- [NTSB CEN16LA035](https://openairdocs.org/ntsb/CEN16LA035.md): Glimn Kitfox 2-3 · Escanaba, MI · Accident · Minor injuries · Limited investigation · Final report · Nov 3, 2015 · N93TG · Substantial damage
  > The airplane owner's inadequate maintenance and servicing of the propeller gearbox, which resulted in oil starvation, failure of the gearbox in flight, and a subsequent loss of propeller thrust. Contributing to the outcome was the airplane's low altitude at…
- [NTSB CEN16FA013](https://openairdocs.org/ntsb/CEN16FA013.md): Cessna 421B · Hammond, LA · Accident · 2 fatal · Field investigation · Final report · Oct 14, 2015 · N33FA · Destroyed
  > The loss of right engine power on takeoff due to maintenance personnel's failure to properly tighten the crankcase through-studs during cylinder replacement, which resulted in crankshaft fracture. Also causal were the pilot's failure to feather the propeller…
- [NTSB CEN15LA330](https://openairdocs.org/ntsb/CEN15LA330.md): Grumman G-164A · Emmett, KS · Accident · Minor injuries · Limited investigation · Final report · Jul 31, 2015 · N963X · Substantial damage
  > The engine failure due to several loose, damaged cylinder stud nuts and hold-down bolts. Contributing to the accident was maintenance personnel’s failure to detect that the cylinder nuts and hold-down bolts were not properly secured during the engine’s most…
- [NTSB CEN15LA329](https://openairdocs.org/ntsb/CEN15LA329.md): O'Dell Aeromaster · Sulphur Springs, TX · Accident · 1 fatal · Limited investigation · Final report · Jul 31, 2015 · N55J · Destroyed
  > A total loss of engine power for reasons that could not be determined because postimpact damage precluded a thorough examination of the airplane. Contributing to the accident was the pilot's failure to maintain control following the loss of engine power,…
- [NTSB ERA15LA263](https://openairdocs.org/ntsb/ERA15LA263.md): Cessna 210 5A(205A) · Stafford Twp, NJ · Accident · Minor injuries · Limited investigation · Final report · Jul 12, 2015 · N315EC · Substantial damage
  > The total loss of engine power due to the failure of the crankshaft, which resulted from a mechanic's failure to properly torque the engine cylinder through bolts.
- [NTSB CEN15LA284](https://openairdocs.org/ntsb/CEN15LA284.md): Cessna TR182 · Casper, WY · Accident · Serious injuries · Limited investigation · Final report · Jun 27, 2015 · N4751S · Substantial damage
  > The improper repair of the carburetor heat cable sheath to clamp joint, which prevented the proper operation of the carburetor heat and resulted in the loss of engine power.
- [NTSB CEN15LA233](https://openairdocs.org/ntsb/CEN15LA233.md): Cessna T206H · Piggott, AR · Accident · Minor injuries · Limited investigation · Final report · May 15, 2015 · N164CS · Substantial damage
  > The loss of engine power due to a malfunctioning magneto. Contributing to the accident was maintenance personnel's improper use of a drill bit instead of a timing pin during magneto installation, which resulted in a section of the drill bit breaking off and…
- [NTSB WPR15LA159](https://openairdocs.org/ntsb/WPR15LA159.md): Garlick UH-1B · Kettle Falls, WA · Accident · Minor injuries · Limited investigation · Final report · May 8, 2015 · N46969 · Substantial damage
  > A total loss of engine power due to foreign object (towel) ingestion. Contributing to the accident was maintenance personnel’s inadequate postmaintenance inspection of the engine.
- [NTSB CEN15LA199](https://openairdocs.org/ntsb/CEN15LA199.md): Cessna 421B · Diboll, TX · Accident · Serious injuries · Limited investigation · Final report · Apr 17, 2015 · N421PK · Substantial damage
  > The total loss of engine power due to the use of an improper fuel type. Contributing to the accident were the servicing of the airplane with the improper fuel, noncompliance with an airworthiness directive, and the fuel nozzle installed on the fueling truck.
- [NTSB WPR15FA121](https://openairdocs.org/ntsb/WPR15FA121.md): Ryan Aeronautical ST3KR · Santa Monica, CA · Accident · Serious injuries · Field investigation · Final report · Mar 5, 2015 · N53178 · Substantial damage
  > A total loss of engine power during initial climb when the carburetor main metering jet became unseated, which led to an extremely rich fuel-to-air ratio. Contributing to the accident was the lack of adequate carburetor maintenance instructions. Contributing…
- [NTSB ERA15LA134](https://openairdocs.org/ntsb/ERA15LA134.md): Cirrus Design SR22 · Lexington, KY · Accident · No injuries · Limited investigation · Final report · Feb 19, 2015 · N358CD · Substantial damage
  > Maintenance personnel's failure to properly inspect and clean the engine ignition harness spark plug terminals, which resulted in a partial loss of engine power during an attempted takeoff.
- [NTSB CEN15LA138](https://openairdocs.org/ntsb/CEN15LA138.md): Air Tractor AT 602 · Slaton, TX · Accident · No injuries · Limited investigation · Final report · Feb 5, 2015 · N602PB · Substantial damage
  > Maintenance personnel’s improper installation of the engine data monitor (EDM), which was not in accordance with the supplemental type certificate instructions and resulted in engine warning indications and the pilot’s subsequent reaction to the warning…
- [NTSB ERA15LA092](https://openairdocs.org/ntsb/ERA15LA092.md): Beech V35B · Long View, NC · Accident · Serious injuries · Limited investigation · Final report · Jan 6, 2015 · N246JT · Substantial damage
  > The improper installation of the lower rear crankshaft counterweight snap rings by unknown maintenance personnel, which resulted in the separation of the counterweight and a subsequent total loss of engine power during initial climb.
- [NTSB ERA15LA087](https://openairdocs.org/ntsb/ERA15LA087.md): MDS Fying Zenith Zodiac CH 650 · Fort Pierce, FL · Accident · No injuries · Limited investigation · Final report · Dec 30, 2014 · N419PE · Substantial damage
  > The inadequate modification of the airplane’s canopy latching mechanism, which resulted in the inadvertent opening of the canopy while on final approach to land and a subsequent loss of pitch control.

Next page: https://openairdocs.org/ntsb-findings/01010500/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", '01010500'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-findings/01010500/cases

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