# Maintenance - Type: NTSB finding section - Path: [Personnel issues](https://openairdocs.org/ntsb-findings/02) › [Task performance](https://openairdocs.org/ntsb-findings/0206) › Maintenance - NTSB code: 020620 - Cases: 1074 - In the probable cause: 964 - Fatal cases: 156 - All cases: https://openairdocs.org/ntsb-findings/020620/cases.md - Cases with it in the probable cause: https://openairdocs.org/ntsb-findings/020620/cases.md?cause=1 - Page: https://openairdocs.org/ntsb-findings/020620 ## Cases per year (in the probable cause / all) - 2008: 71 / 76 - 2009: 42 / 48 - 2010: 51 / 56 - 2011: 56 / 67 - 2012: 73 / 79 - 2013: 76 / 79 - 2014: 60 / 64 - 2015: 70 / 75 - 2016: 60 / 62 - 2017: 59 / 68 - 2018: 49 / 54 - 2019: 44 / 51 - 2020: 43 / 53 - 2021: 33 / 41 - 2022: 54 / 64 - 2023: 47 / 52 - 2024: 55 / 62 - 2025: 20 / 22 - 2026: 1 / 1 ## Findings - [Installation](https://openairdocs.org/ntsb-findings/02062035): 371 cases, 355 in the probable cause - [Scheduled/routine maintenance](https://openairdocs.org/ntsb-findings/02062010): 320 cases, 274 in the probable cause - [Maintenance, general](https://openairdocs.org/ntsb-findings/02062000): 143 cases, 126 in the probable cause - [Repair](https://openairdocs.org/ntsb-findings/02062015): 99 cases, 84 in the probable cause - [Replacement](https://openairdocs.org/ntsb-findings/02062020): 70 cases, 65 in the probable cause - [Modification/alteration](https://openairdocs.org/ntsb-findings/02062030): 69 cases, 59 in the probable cause - [Fabrication](https://openairdocs.org/ntsb-findings/02062025): 30 cases, 26 in the probable cause - [Unauthorized maint/repair](https://openairdocs.org/ntsb-findings/02062040): 14 cases, 13 in the probable cause ## Defining events in these cases - [Loss of engine power (total)](https://openairdocs.org/ntsb-events/341): 260 cases - [Loss of engine power (partial)](https://openairdocs.org/ntsb-events/342): 142 cases - [Sys/Comp malf/fail (non-power)](https://openairdocs.org/ntsb-events/330): 111 cases - [Powerplant sys/comp malf/fail](https://openairdocs.org/ntsb-events/340): 101 cases - [Flight control sys malf/fail](https://openairdocs.org/ntsb-events/333): 79 cases - [Part(s) separation from AC](https://openairdocs.org/ntsb-events/338): 49 cases - [Loss of control in flight](https://openairdocs.org/ntsb-events/240): 48 cases - [Landing gear collapse](https://openairdocs.org/ntsb-events/094): 45 cases - [Fuel starvation](https://openairdocs.org/ntsb-events/191): 40 cases - [Fire/smoke (non-impact)](https://openairdocs.org/ntsb-events/150): 29 cases ## Aircraft models (registry) - [Piper PA-28-140](https://openairdocs.org/model/piper-pa-28-140): 16 cases - [Piper PA-28R-200](https://openairdocs.org/model/piper-pa-28r-200): 13 cases - [Cirrus Design SR22](https://openairdocs.org/model/cirrus-design-sr22): 12 cases - [Beech A36](https://openairdocs.org/model/beech-a36): 12 cases - [Piper PA-28-180](https://openairdocs.org/model/piper-pa-28-180): 10 cases - [Cessna 172N](https://openairdocs.org/model/cessna-172n): 10 cases - [Cessna 152](https://openairdocs.org/model/cessna-152): 10 cases - [Piper PA-32-300](https://openairdocs.org/model/piper-pa-32-300): 9 cases - [Bell 206B](https://openairdocs.org/model/bell-206b): 7 cases - [Beech 58](https://openairdocs.org/model/beech-58): 7 cases ## Other findings in the same cases - [Aircraft control](https://openairdocs.org/ntsb-findings/02063040) (Personnel issues): 82 cases - [Fuel](https://openairdocs.org/ntsb-findings/01071010) (Aircraft): 68 cases - [Recip eng cyl section](https://openairdocs.org/ntsb-findings/01058530) (Aircraft): 68 cases - [Decision making/judgment](https://openairdocs.org/ntsb-findings/02041520) (Personnel issues): 67 cases - [Recip engine power section](https://openairdocs.org/ntsb-findings/01058520) (Aircraft): 58 cases - [Engine (reciprocating), general](https://openairdocs.org/ntsb-findings/01058500) (Aircraft): 51 cases - [Fuel distribution](https://openairdocs.org/ntsb-findings/01022820) (Aircraft): 48 cases - [Oil](https://openairdocs.org/ntsb-findings/01071020) (Aircraft): 45 cases - [Preflight inspection](https://openairdocs.org/ntsb-findings/02061510) (Personnel issues): 41 cases - [Scheduled/routine inspection](https://openairdocs.org/ntsb-findings/02061520) (Personnel issues): 40 cases ## Newest cases - [NTSB ERA26LA151](https://openairdocs.org/ntsb/ERA26LA151), Mar 25, 2026: Piper PA-32-260 (N7081H), Block Island, RI, substantial damage. Probable cause: 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… - [NTSB CEN26LA074](https://openairdocs.org/ntsb/CEN26LA074), Dec 31, 2025: Pitts S1S (N401MS), Carbondale, IL, substantial damage. Probable cause: A loss of engine power due to fuel starvation resulting from an uncommanded change to the fuel servo mixture position due to the improperly installed mixture cable. - [NTSB WPR26LA056](https://openairdocs.org/ntsb/WPR26LA056), Dec 8, 2025: Rotorway Exec (C-GBZD), Lake Havasu City, AZ, substantial damage. Probable cause: The pilot’s improper securing hardware installation, which resulted in a loss of throttle control and a loss of engine power. - [NTSB CEN25LA402](https://openairdocs.org/ntsb/CEN25LA402), Sep 25, 2025: Textron 525C (N361MB), Baton Rouge, LA, substantial damage. Probable cause: The improper installation of the trunnion pin, which resulted in a failure of the right main landing gear. Contributing to the accident was the failure of maintenance personnel to follow the aircraft… - [NTSB CEN25LA401](https://openairdocs.org/ntsb/CEN25LA401), Sep 7, 2025: CubCrafters CCK-2000 (N40DT), Thompsonville, MI, substantial damage. Probable cause: A total loss of engine power due to a lack of ignition resulting from a fractured alternator ring terminal and the builder’s incorrect installation of the wire connecting to the alternator.… - [NTSB ERA25LA295](https://openairdocs.org/ntsb/ERA25LA295), Aug 8, 2025: Cessna 195 (N1950C), Memphis, TN, substantial damage. Probable cause: Failure of the left main landing gear due to the loss of the protective paint coating and a change in the local surface finish from impermissible grinding, which resulted in fatigue cracking. - [NTSB ANC25LA059](https://openairdocs.org/ntsb/ANC25LA059), Jun 25, 2025: Cessna 170B (N2655D), Denali Park, AK, substantial damage. Probable cause: The failure of the left main landing gear spring due to a fatigue fracture during landing on uneven terrain. - [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 ERA25FA230](https://openairdocs.org/ntsb/ERA25FA230), Jun 19, 2025: Mooney M20F (N9573M), Beverly, MA, substantial damage, 2 fatal. Probable cause: 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… - [NTSB ERA25LA223](https://openairdocs.org/ntsb/ERA25LA223), Jun 7, 2025: Piper PA22 (N6804B), Hebron, OH, substantial damage. Probable cause: The airplane owner and pilot’s intentional allowance of unapproved maintenance and maintenance personnel’s failure to adequately maintain or service the brake system, which resulted in a total loss… 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.