# Unauthorized maint/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) › Unauthorized maint/repair - NTSB code: 02062040 - Cases: 14 - In the probable cause: 13 - Fatal cases: 3 - All cases: https://openairdocs.org/ntsb-findings/02062040/cases.md - Cases with it in the probable cause: https://openairdocs.org/ntsb-findings/02062040/cases.md?cause=1 - Page: https://openairdocs.org/ntsb-findings/02062040 ## Cases per year (in the probable cause / all) - 2008: 1 / 1 - 2012: 1 / 1 - 2013: 1 / 1 - 2015: 2 / 2 - 2016: 2 / 2 - 2018: 1 / 1 - 2019: 1 / 1 - 2020: 1 / 1 - 2022: 1 / 2 - 2025: 2 / 2 ## Defining events in these cases - [Loss of engine power (total)](https://openairdocs.org/ntsb-events/341): 3 cases - [Powerplant sys/comp malf/fail](https://openairdocs.org/ntsb-events/340): 2 cases - [Loss of engine power (partial)](https://openairdocs.org/ntsb-events/342): 1 cases - [Part(s) separation from AC](https://openairdocs.org/ntsb-events/338): 1 cases - [Flight control sys malf/fail](https://openairdocs.org/ntsb-events/333): 1 cases - [Sys/Comp malf/fail (non-power)](https://openairdocs.org/ntsb-events/330): 1 cases - [Fuel starvation](https://openairdocs.org/ntsb-events/191): 1 cases - [Fuel related](https://openairdocs.org/ntsb-events/190): 1 cases - [Explosion (non-impact)](https://openairdocs.org/ntsb-events/160): 1 cases - [Fire/smoke (non-impact)](https://openairdocs.org/ntsb-events/150): 1 cases ## Aircraft models (registry) - [Piper PA-28R-200](https://openairdocs.org/model/piper-pa-28r-200): 2 cases - [Rockwell International S-2R](https://openairdocs.org/model/rockwell-international-s-2r): 1 cases - [Raytheon A36](https://openairdocs.org/model/raytheon-a36): 1 cases - [Piper PA-32-300](https://openairdocs.org/model/piper-pa-32-300): 1 cases - [Piper PA-23-160](https://openairdocs.org/model/piper-pa-23-160): 1 cases - [Piper PA-22-150](https://openairdocs.org/model/piper-pa-22-150): 1 cases - [Piper PA-18A 150](https://openairdocs.org/model/piper-pa-18a-150): 1 cases - [Grumman American Avn. AA-5](https://openairdocs.org/model/grumman-american-avn-aa-5): 1 cases - [Cessna 182P](https://openairdocs.org/model/cessna-182p): 1 cases - [Textron T240](https://openairdocs.org/model/textron-t240): 1 cases ## Other findings in the same cases - [Oil](https://openairdocs.org/ntsb-findings/01071020) (Aircraft): 3 cases - [Maintenance/inspections, general](https://openairdocs.org/ntsb-findings/01010500) (Aircraft): 3 cases - [Modification/alteration](https://openairdocs.org/ntsb-findings/02062030) (Personnel issues): 2 cases - [Decision making/judgment](https://openairdocs.org/ntsb-findings/02041520) (Personnel issues): 2 cases - [Qualification/certification](https://openairdocs.org/ntsb-findings/02031010) (Personnel issues): 2 cases - [Sign/marker](https://openairdocs.org/ntsb-findings/03022015) (Environmental issues): 1 cases - [Aircraft control](https://openairdocs.org/ntsb-findings/02063040) (Personnel issues): 1 cases - [Use of policy/procedure](https://openairdocs.org/ntsb-findings/02063032) (Personnel issues): 1 cases - [Repair](https://openairdocs.org/ntsb-findings/02062015) (Personnel issues): 1 cases - [Scheduled/routine maintenance](https://openairdocs.org/ntsb-findings/02062010) (Personnel issues): 1 cases ## Newest cases - [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 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 CEN22LA250](https://openairdocs.org/ntsb/CEN22LA250), Jun 8, 2022: Beech 58 (N78KL), Evansville, IN, incident, minor damage. Probable cause: The failure of the propeller blade due to high-cycle fatigue that originated from damage that occurred at an unknown time. Contributing to the accident was the failure to identify the damage before… - [NTSB WPR22LA090](https://openairdocs.org/ntsb/WPR22LA090), Jan 28, 2022: Textron TTX Inc. T240 (N420WT), Ravendale, CA, substantial damage. Probable cause: 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… - [NTSB ERA20LA271](https://openairdocs.org/ntsb/ERA20LA271), Aug 1, 2020: American AA 5 (N7192L), Dunnellon, FL, substantial damage, 1 fatal. Probable cause: A total loss of engine power due to fuel starvation as a result of improper installation and inspection of the airplane’s fuel system. Contributing to the accident was the pilot’s lack of… - [NTSB CEN19LA224](https://openairdocs.org/ntsb/CEN19LA224), Jul 14, 2019: Piper PA18 (N6983B), Osceola, WI, substantial damage. Probable cause: The failure of the right horizontal stabilizer during takeoff, resulting in a loss of control and forced landing. Contributing to the accident was the installation of an unapproved stabilizer frame… - [NTSB ERA18FA138](https://openairdocs.org/ntsb/ERA18FA138), May 2, 2018: Piper PA32 (N4153R), West Milford, NJ, destroyed, 1 fatal. Probable cause: An in-flight fire and total loss of engine power after takeoff due to a loose fuel line. Contributing to the accident was the installation of an unapproved fuel line by unknown personnel. - [NTSB WPR16FA183](https://openairdocs.org/ntsb/WPR16FA183), Sep 18, 2016: Cessna 182P (N20844), Gilbert, AZ, destroyed. Probable cause: An inadvertent explosion of pyrotechnics, which were contained in a box that had been installed on the airplane's left main landing gear assembly spring leg which resulted in shrapnel striking the… - [NTSB CEN16LA309](https://openairdocs.org/ntsb/CEN16LA309), Aug 2, 2016: Cessna 172K (N46459), Neenah, WI, substantial damage. Probable cause: A loss of engine power due to oil starvation, which resulted from the pilot, who was not a certified airframe and powerplant mechanic, removing the vacuum pump from the engine, and his misconception… - [NTSB ERA16LA066](https://openairdocs.org/ntsb/ERA16LA066), Dec 12, 2015: Raytheon A36 (N3241N), Fayetteville, NC, substantial damage. Probable cause: 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… 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.