# Repair - 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) › Repair - NTSB code: 02062015 - Cases: 99 - In the probable cause: 84 - Fatal cases: 16 - All cases: https://openairdocs.org/ntsb-findings/02062015/cases.md - Cases with it in the probable cause: https://openairdocs.org/ntsb-findings/02062015/cases.md?cause=1 - Page: https://openairdocs.org/ntsb-findings/02062015 ## Cases per year (in the probable cause / all) - 2008: 9 / 10 - 2009: 3 / 3 - 2010: 3 / 4 - 2011: 6 / 9 - 2012: 8 / 8 - 2013: 2 / 2 - 2014: 7 / 7 - 2015: 5 / 6 - 2016: 7 / 8 - 2017: 3 / 3 - 2018: 6 / 6 - 2019: 8 / 9 - 2020: 2 / 4 - 2021: 1 / 1 - 2022: 5 / 8 - 2023: 4 / 4 - 2024: 2 / 4 - 2025: 3 / 3 ## Defining events in these cases - [Loss of engine power (total)](https://openairdocs.org/ntsb-events/341): 19 cases - [Loss of engine power (partial)](https://openairdocs.org/ntsb-events/342): 13 cases - [Sys/Comp malf/fail (non-power)](https://openairdocs.org/ntsb-events/330): 11 cases - [Powerplant sys/comp malf/fail](https://openairdocs.org/ntsb-events/340): 9 cases - [Part(s) separation from AC](https://openairdocs.org/ntsb-events/338): 8 cases - [Flight control sys malf/fail](https://openairdocs.org/ntsb-events/333): 7 cases - [Loss of control in flight](https://openairdocs.org/ntsb-events/240): 6 cases - [Landing gear collapse](https://openairdocs.org/ntsb-events/094): 6 cases - [Fuel contamination](https://openairdocs.org/ntsb-events/193): 3 cases - [Miscellaneous/other](https://openairdocs.org/ntsb-events/900): 2 cases ## Aircraft models (registry) - [Cessna 152](https://openairdocs.org/model/cessna-152): 4 cases - [Robinson Helicopter R22 BETA](https://openairdocs.org/model/robinson-helicopter-r22-beta): 2 cases - [Cirrus Design SR22](https://openairdocs.org/model/cirrus-design-sr22): 2 cases - [Bell 407](https://openairdocs.org/model/bell-407): 2 cases - [Beech 58](https://openairdocs.org/model/beech-58): 2 cases - [Beech A36](https://openairdocs.org/model/beech-a36): 2 cases - [S N I A S AS-350B ECUREUIL](https://openairdocs.org/model/s-n-i-a-s-as-350b-ecureuil): 1 cases - [Socata TB21](https://openairdocs.org/model/socata-tb21): 1 cases - [Socata TB-20 TRINIDAD](https://openairdocs.org/model/socata-tb-20-trinidad): 1 cases - [S.O.C.A.T.A. MS894A](https://openairdocs.org/model/s-o-c-a-t-a-ms894a): 1 cases ## Other findings in the same cases - [Aircraft control](https://openairdocs.org/ntsb-findings/02063040) (Personnel issues): 8 cases - [Fuel](https://openairdocs.org/ntsb-findings/01071010) (Aircraft): 8 cases - [Recip engine power section](https://openairdocs.org/ntsb-findings/01058520) (Aircraft): 8 cases - [Incorrect action performance](https://openairdocs.org/ntsb-findings/02041015) (Personnel issues): 6 cases - [Rough terrain](https://openairdocs.org/ntsb-findings/03021015) (Environmental issues): 5 cases - [Airspeed](https://openairdocs.org/ntsb-findings/01062010) (Aircraft): 5 cases - [Engine (reciprocating), general](https://openairdocs.org/ntsb-findings/01058500) (Aircraft): 5 cases - [Oil](https://openairdocs.org/ntsb-findings/01071020) (Aircraft): 4 cases - [Recip eng cyl section](https://openairdocs.org/ntsb-findings/01058530) (Aircraft): 4 cases - [Engine exhaust, general](https://openairdocs.org/ntsb-findings/01057800) (Aircraft): 4 cases ## Newest cases - [NTSB ERA25LA204](https://openairdocs.org/ntsb/ERA25LA204), May 19, 2025: Eurocopter Deutschland MBB-BK 117 C-1 (N117NC), Fort Washington, PA, substantial damage. Probable cause: Maintenance personnel’s failure to identify and replace damaged rivet nuts at the air conditioning louver assembly, which resulted in the separation of the louver assembly from the helicopter, the… - [NTSB ANC25LA030](https://openairdocs.org/ntsb/ANC25LA030), Mar 7, 2025: Cessna A185F (N1718R), Skwentna, AK, substantial damage. Probable cause: Maintenance personnel’s reuse of worn hardware during the installation of the landing gear assembly and the hardware’s failure and subsequent separation of the gear leg from the landing gear box… - [NTSB CEN25LA093](https://openairdocs.org/ntsb/CEN25LA093), Feb 7, 2025: Robinson Helicopter R22 Beta (N7191B), Spearman, TX, substantial damage. Probable cause: 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… - [NTSB CEN25LA018](https://openairdocs.org/ntsb/CEN25LA018), Oct 17, 2024: Piper PA-32R-301 (N81481), Van, TX, substantial damage. Probable cause: 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 ERA24LA375](https://openairdocs.org/ntsb/ERA24LA375), Sep 10, 2024: Air Tractor AT-802 (N802JF), Hickory Valley, TN, substantial damage. Probable cause: A partial loss of engine power due to a leak in the fuel control unit bellows, which resulted in the fuel valve moving to minimum fuel flow. - [NTSB WPR24LA121](https://openairdocs.org/ntsb/WPR24LA121), Apr 5, 2024: Kitfox Series 5 (N743JT), Yucca Grove, CA, substantial damage. Probable cause: 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 CEN24LA145](https://openairdocs.org/ntsb/CEN24LA145), Apr 2, 2024: Mooney M20E (N86UM), Alpine, AR, substantial damage. Probable cause: The improper maintenance of the cabin air and exhaust system which resulted in a cracked exhaust pipe and damaged cabin air tubing, and the subsequent elevated carbon monoxide levels in the cockpit… - [NTSB WPR24FA056](https://openairdocs.org/ntsb/WPR24FA056), Dec 16, 2023: Vans RV8 (N6948L), Corona, CA, substantial damage, 1 fatal. Probable cause: Fuel contamination from the pilot’s improper application of a sealant to the fuel tank, which resulted in a partial loss of engine power on takeoff. - [NTSB ERA23FA382](https://openairdocs.org/ntsb/ERA23FA382), Sep 29, 2023: Smith William S Smith Cozy Mark IV (N95SF), Cullman, AL, substantial damage, 1 fatal. Probable cause: The pilot’s exceedance of the airplane’s critical angle of attack while maneuvering at low altitude, which resulted in an aerodynamic stall and subsequent loss of control. Contributing to the… - [NTSB WPR23FA351](https://openairdocs.org/ntsb/WPR23FA351), Sep 22, 2023: Golden Circle T Bird (UNREG), Arlington, WA, substantial damage, 1 fatal. Probable cause: A failure of the forward left wing spar due to an improper repair, which resulted in an inflight separation of the left wing. Contributing to the accident was improper maintenance by splicing the… 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.