# Maintenance, general - Type: NTSB finding subsection - Path: [Personnel issues](https://openairdocs.org/ntsb-findings/02) › [Task performance](https://openairdocs.org/ntsb-findings/0206) › [Maintenance](https://openairdocs.org/ntsb-findings/020620) › Maintenance, general - NTSB code: 02062000 - Cases: 143 - In the probable cause: 126 - Fatal cases: 22 - All cases: https://openairdocs.org/ntsb-findings/02062000/cases.md - Cases with it in the probable cause: https://openairdocs.org/ntsb-findings/02062000/cases.md?cause=1 - Page: https://openairdocs.org/ntsb-findings/02062000 ## Cases per year (in the probable cause / all) - 2008: 13 / 13 - 2009: 8 / 10 - 2010: 9 / 10 - 2011: 9 / 11 - 2012: 10 / 12 - 2013: 12 / 13 - 2014: 3 / 4 - 2015: 5 / 6 - 2016: 8 / 8 - 2017: 6 / 8 - 2018: 8 / 10 - 2019: 4 / 4 - 2020: 6 / 8 - 2021: 4 / 5 - 2022: 8 / 8 - 2023: 6 / 6 - 2024: 5 / 5 - 2025: 2 / 2 ## Defining events in these cases - [Loss of engine power (total)](https://openairdocs.org/ntsb-events/341): 45 cases - [Powerplant sys/comp malf/fail](https://openairdocs.org/ntsb-events/340): 18 cases - [Loss of engine power (partial)](https://openairdocs.org/ntsb-events/342): 16 cases - [Sys/Comp malf/fail (non-power)](https://openairdocs.org/ntsb-events/330): 15 cases - [Landing gear collapse](https://openairdocs.org/ntsb-events/094): 7 cases - [Flight control sys malf/fail](https://openairdocs.org/ntsb-events/333): 5 cases - [Loss of control in flight](https://openairdocs.org/ntsb-events/240): 5 cases - [Fuel starvation](https://openairdocs.org/ntsb-events/191): 5 cases - [Loss of control on ground](https://openairdocs.org/ntsb-events/230): 4 cases - [Fuel contamination](https://openairdocs.org/ntsb-events/193): 3 cases ## Aircraft models (registry) - [Piper PA 46-350P](https://openairdocs.org/model/piper-pa-46-350p): 3 cases - [Piper PA-32-300](https://openairdocs.org/model/piper-pa-32-300): 3 cases - [Cessna T206H](https://openairdocs.org/model/cessna-t206h): 3 cases - [Eurocopter AS 350 B2](https://openairdocs.org/model/eurocopter-as-350-b2): 2 cases - [Schweizer 269C-1](https://openairdocs.org/model/schweizer-269c-1): 2 cases - [Piper PA-44-180](https://openairdocs.org/model/piper-pa-44-180): 2 cases - [Piper PA-28R-200](https://openairdocs.org/model/piper-pa-28r-200): 2 cases - [Piper PA-28-180](https://openairdocs.org/model/piper-pa-28-180): 2 cases - [Piper PA-28-161](https://openairdocs.org/model/piper-pa-28-161): 2 cases - [Piper PA-24-250](https://openairdocs.org/model/piper-pa-24-250): 2 cases ## Other findings in the same cases - [Fuel](https://openairdocs.org/ntsb-findings/01071010) (Aircraft): 12 cases - [Recip eng cyl section](https://openairdocs.org/ntsb-findings/01058530) (Aircraft): 11 cases - [Engine (reciprocating), general](https://openairdocs.org/ntsb-findings/01058500) (Aircraft): 11 cases - [Fuel system, general](https://openairdocs.org/ntsb-findings/01022800) (Aircraft): 11 cases - [Aircraft control](https://openairdocs.org/ntsb-findings/02063040) (Personnel issues): 9 cases - [Recip engine power section](https://openairdocs.org/ntsb-findings/01058520) (Aircraft): 9 cases - [Maintenance/inspections, general](https://openairdocs.org/ntsb-findings/01010500) (Aircraft): 9 cases - [Decision making/judgment](https://openairdocs.org/ntsb-findings/02041520) (Personnel issues): 8 cases - [Incorrect action performance](https://openairdocs.org/ntsb-findings/02041015) (Personnel issues): 6 cases - [Fuel distribution](https://openairdocs.org/ntsb-findings/01022820) (Aircraft): 6 cases ## Newest cases - [NTSB ERA25LA238](https://openairdocs.org/ntsb/ERA25LA238), Jun 24, 2025: Cessna 310 (N5045Q), Fayetteville, TN, substantial damage. Probable cause: The pilot’s decision to operate the airplane with known discrepancies. - [NTSB CEN25LA165](https://openairdocs.org/ntsb/CEN25LA165), Mar 27, 2025: Cessna T206 (N27DV), Natchez, MS, substantial damage. Probable cause: 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… - [NTSB WPR24LA260](https://openairdocs.org/ntsb/WPR24LA260), Jul 23, 2024: Kitfox Series V (N53562), La Grande, OR, substantial damage. Probable cause: Separation of the propeller blades from progressive damage at the blade roots due to overtightening of the hub bolts. - [NTSB CEN24LA193](https://openairdocs.org/ntsb/CEN24LA193), May 19, 2024: Air Tractor AT-502 (N15189), Covert, KS, substantial damage. Probable cause: 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 ERA24LA211](https://openairdocs.org/ntsb/ERA24LA211), May 8, 2024: Piper PA32 (N908DK), Apopka, FL, substantial damage. Probable cause: A partial loss of engine power due to sticking exhaust valves. Contributing to the accident was maintenance personnel’s failure to use available engine data while troubleshooting a known engine issue… - [NTSB CEN24LA141](https://openairdocs.org/ntsb/CEN24LA141), Mar 25, 2024: Cozy Mark IV (N20MN), Gonzales, TX, substantial damage. Probable cause: Maintenance personnel’s failure to properly torque the crankshaft idler gear hardware according to the engine manufacturer’s service instructions, which resulted in separation of the crankshaft idler… - [NTSB ERA24FA110](https://openairdocs.org/ntsb/ERA24FA110), Feb 9, 2024: Bombardier CL-600-2B16 (N823KD), Naples, FL, destroyed, 2 fatal. Probable cause: 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… - [NTSB ERA23LA319](https://openairdocs.org/ntsb/ERA23LA319), Aug 1, 2023: Bell Helicopter Textron Canada 407 (N31PB), North Charleston, SC, substantial damage. Probable cause: A failure of the tail rotor pitch change lever assembly due to incorrectly installed bolts and maintenance personnel’s inadequate inspection of the tail rotor control system. - [NTSB CEN23FA314](https://openairdocs.org/ntsb/CEN23FA314), Jul 20, 2023: Piper PA-31P (N200RA), Kearney, MO, destroyed, 1 fatal. Probable cause: 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… - [NTSB ERA23LA289](https://openairdocs.org/ntsb/ERA23LA289), Jun 27, 2023: Hughes 269A (N90270), Anderson, SC, substantial damage. Probable cause: The mechanics’ improper torquing of the main rotor blade dampers, which resulted in a ground resonance event during landing. NTSB has coded findings and defining events since 2008; earlier cases used its older occurrence and cause codes and aren't counted. Findings: https://openairdocs.org/ntsb-findings.md. Defining events: https://openairdocs.org/ntsb-events.md. Phases of flight: https://openairdocs.org/ntsb-phases.md. Every investigation, filtered by finding, event, phase, state, year or model: https://openairdocs.org/ntsb.md (for example ?state=MI&fatal=1). NTSB's definitions: Accident and incident, 49 CFR 830.2 (https://www.ecfr.gov/current/title-49/subtitle-B/chapter-VIII/part-830/subpart-A/section-830.2), CICTT occurrence categories (PDF) (https://www.ntsb.gov/safety/data/Documents/datafiles/OccurrenceCategoryDefinitions.pdf), CICTT phases of flight (PDF) (https://www.ntsb.gov/safety/data/Documents/datafiles/PhaseofFlightDefinitions.pdf), and NTSB coding manual, before 2008 (PDF) (https://www.ntsb.gov/GILS/Documents/codman.pdf). NTSB publishes no definitions for its findings, only their names. --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.