# Engine exhaust, general - Type: NTSB finding subsection - Path: [Aircraft](https://openairdocs.org/ntsb-findings/01) › [Aircraft power plant](https://openairdocs.org/ntsb-findings/0105) › [Engine exhaust](https://openairdocs.org/ntsb-findings/010578) › Engine exhaust, general - NTSB code: 01057800 - Cases: 56 - In the probable cause: 53 - Fatal cases: 18 - All cases: https://openairdocs.org/ntsb-findings/01057800/cases.md - Cases with it in the probable cause: https://openairdocs.org/ntsb-findings/01057800/cases.md?cause=1 - Page: https://openairdocs.org/ntsb-findings/01057800 ## Cases per year (in the probable cause / all) - 2008: 4 / 4 - 2009: 3 / 4 - 2010: 2 / 2 - 2011: 1 / 1 - 2012: 2 / 2 - 2013: 3 / 3 - 2014: 2 / 2 - 2015: 3 / 3 - 2016: 4 / 4 - 2017: 3 / 3 - 2018: 6 / 6 - 2019: 4 / 4 - 2020: 2 / 3 - 2021: 3 / 4 - 2022: 5 / 5 - 2023: 1 / 1 - 2024: 3 / 3 - 2025: 2 / 2 ## Defining events in these cases - [Powerplant sys/comp malf/fail](https://openairdocs.org/ntsb-events/340): 13 cases - [Fire/smoke (non-impact)](https://openairdocs.org/ntsb-events/150): 11 cases - [Loss of engine power (partial)](https://openairdocs.org/ntsb-events/342): 10 cases - [Loss of engine power (total)](https://openairdocs.org/ntsb-events/341): 7 cases - [Sys/Comp malf/fail (non-power)](https://openairdocs.org/ntsb-events/330): 5 cases - [Loss of control in flight](https://openairdocs.org/ntsb-events/240): 5 cases - [Part(s) separation from AC](https://openairdocs.org/ntsb-events/338): 2 cases - [Miscellaneous/other](https://openairdocs.org/ntsb-events/900): 1 cases - [Loss of lift](https://openairdocs.org/ntsb-events/500): 1 cases - [Landing gear not configured](https://openairdocs.org/ntsb-events/095): 1 cases ## Aircraft models (registry) - [Piper PA-28-180](https://openairdocs.org/model/piper-pa-28-180): 2 cases - [Mooney M20C](https://openairdocs.org/model/mooney-m20c): 2 cases - [Piper PA 46-350P](https://openairdocs.org/model/piper-pa-46-350p): 2 cases - [Varga 2150A](https://openairdocs.org/model/varga-2150a): 1 cases - [Stinson 108-1](https://openairdocs.org/model/stinson-108-1): 1 cases - [Silvaire LUSCOMBE 8A](https://openairdocs.org/model/silvaire-luscombe-8a): 1 cases - [Sikorsky S-76D](https://openairdocs.org/model/sikorsky-s-76d): 1 cases - [Piper PA-38-112](https://openairdocs.org/model/piper-pa-38-112): 1 cases - [Piper PA-32-260](https://openairdocs.org/model/piper-pa-32-260): 1 cases - [Piper PA-31-350](https://openairdocs.org/model/piper-pa-31-350): 1 cases ## Other findings in the same cases - [Carbon monoxide](https://openairdocs.org/ntsb-findings/02012040) (Personnel issues): 10 cases - [Scheduled/routine inspection](https://openairdocs.org/ntsb-findings/02061520) (Personnel issues): 8 cases - [Aircraft control](https://openairdocs.org/ntsb-findings/02063040) (Personnel issues): 7 cases - [Tree(s)](https://openairdocs.org/ntsb-findings/03022020) (Environmental issues): 5 cases - [Scheduled/routine maintenance](https://openairdocs.org/ntsb-findings/02062010) (Personnel issues): 5 cases - [Rough terrain](https://openairdocs.org/ntsb-findings/03021015) (Environmental issues): 4 cases - [Repair](https://openairdocs.org/ntsb-findings/02062015) (Personnel issues): 4 cases - [Not determined, general](https://openairdocs.org/ntsb-findings/05000000) (Not determined): 3 cases - [Maintenance, general](https://openairdocs.org/ntsb-findings/02062000) (Personnel issues): 3 cases - [Noise suppressor](https://openairdocs.org/ntsb-findings/01057820) (Aircraft): 3 cases ## Newest cases - [NTSB CEN25LA225](https://openairdocs.org/ntsb/CEN25LA225), Jun 26, 2025: Tecnam P2010 (N258CM), Temple, TX, substantial damage. Probable cause: The loss of engine power due to a failed muffler flame tube assembly which resulted in an exhaust blockage. - [NTSB ERA25LA159](https://openairdocs.org/ntsb/ERA25LA159), Mar 27, 2025: Silvaire Luscombe 8A (N28790), New Port Richey, FL, substantial damage. Probable cause: Maintenance personnel’s inadequate inspection of the exhaust system, which allowed exhaust gases to enter the induction system from cracks in the exhaust manifold, resulting in a total loss of engine… - [NTSB ERA24LA276](https://openairdocs.org/ntsb/ERA24LA276), Jun 25, 2024: Snyder Searey (N453TS), New Ipswich, NH, substantial damage. Probable cause: A total loss of engine power due to the exhaust muffler and tailpipe assembly separating from its attach points and impacting the propeller. - [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 ERA24LA144](https://openairdocs.org/ntsb/ERA24LA144), Mar 14, 2024: Glasair Sportsman 2+2 (N76TG), Fort Meade, FL, destroyed. Probable cause: The pilot’s inadequate inspection of the airplane following an inflight smoke event, which result in separation of the exhaust pipe and hot exhaust igniting the engine cowling, and a subsequent loss… - [NTSB CEN23LA418](https://openairdocs.org/ntsb/CEN23LA418), Sep 24, 2023: Beech C23 (N18994), Gonzales, TX, substantial damage. Probable cause: The loss of engine power during go-around due to a failed muffler flame tube, which resulted in an exhaust blockage. Contributing to the accident was maintenance personnel's inadequate inspection of… - [NTSB CEN22LA256](https://openairdocs.org/ntsb/CEN22LA256), Jun 16, 2022: Bellanca 17-30A (N39880), Madison, MS, substantial damage. Probable cause: The failure of a muffler weld due to inadequate maintenance, which resulted in a fire. - [NTSB CEN22LA253](https://openairdocs.org/ntsb/CEN22LA253), Jun 16, 2022: Cessna T206H (N52854), Austin, TX, substantial damage. Probable cause: A total loss of engine power due to an engine fire that resulted from failure of the turbocharger exhaust clamp, which allowed hot exhaust gases to damage other vital engine components. - [NTSB ERA22LA224](https://openairdocs.org/ntsb/ERA22LA224), May 11, 2022: Air Tractor AT-301 (N31580), Somerville, TN, substantial damage. Probable cause: The inadequate inspection and maintenance of the engine exhaust system, which resulted in an in-flight fire. - [NTSB ERA22FA114](https://openairdocs.org/ntsb/ERA22FA114), Feb 1, 2022: Cessna 310 (N622QT), Danville, VA, destroyed, 1 fatal. Probable cause: The pilot’s impairment due to exposure to carbon monoxide as a result of undetected engine exhaust penetration into the cockpit, resulting in the pilot's failure to maintain a minimum controllable… 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.