# NTSB investigations: Recip eng liquid cooling NTSB aviation accident and incident investigations since 1962: the probable cause, findings, aircraft, crew, weather and docket of each, linked to the FAA registry and the FAA’s own reports. ## Latest cases - [NTSB WPR25LA095](https://openairdocs.org/ntsb/WPR25LA095.md): Quicksilver Aeronautics L-S2S · Geyserville, CA · Accident · No injuries · Class 4 · Limited · Final report · Feb 17, 2025 · N14QK · Substantial damage > The pilot’s failure to secure the coolant cap during the preflight inspection, which resulted in a total loss of engine power due to overheating and a subsequent forced landing. - [NTSB CEN25LA038](https://openairdocs.org/ntsb/CEN25LA038.md): Composite FX Mosquito XE · Waco, TX · Accident · Minor injuries · Class 4 · Limited · Final report · Nov 11, 2024 · N869DJ · Substantial damage > The total loss of engine power and subsequent impact with terrain during an autorotation. Contributing to the accident was the improper sealing of the liquid cooling system. - [NTSB CEN24LA333](https://openairdocs.org/ntsb/CEN24LA333.md): Zenith Zodiac CH601 XL · Odessa, MO · Accident · Minor injuries · Class 3 · Limited · Final report · Sep 2, 2024 · N624RJ · Substantial damage > Overheating of the engine coolant for reasons that could not be determined, which resulted in a precautionary off-airport landing, during which the airplane sustained substantial damage. - [NTSB ERA24LA355](https://openairdocs.org/ntsb/ERA24LA355.md): Yates Elden H Avipro Bearhawk · Roxbury, ME · Accident · No injuries · Class 4 · Limited · Final report · Aug 14, 2024 · N652BH · Substantial damage > The pilot’s unstable approach which resulted in a landing with insufficient runway remaining to stop and subsequent impact with a river embankment. Contributing was the engine coolant system anomaly. - [NTSB CEN24LA031](https://openairdocs.org/ntsb/CEN24LA031.md): Powrachute Pegasus · Manhattan, KS · Accident · Serious injuries · Class 3 · Limited · Final report · Oct 21, 2023 · N52631 · Substantial damage > The pilot’s improper modification of the engine cooling system that resulted in an engine overheat and total loss of power. Contributing to the accident was the pilot’s decision to continue the flight after the engine overheat light illuminated instead of… - [NTSB CEN23LA327](https://openairdocs.org/ntsb/CEN23LA327.md): Vans RV10 · Chouteau, OK · Accident · Minor injuries · Class 3 · Limited · Final report · Jul 21, 2023 · N730WL · Substantial damage > The total loss of engine power as a result of a failed positive crankcase ventilation (PCV) valve and a subsequent impact with terrain. - [NTSB ERA22LA268](https://openairdocs.org/ntsb/ERA22LA268.md): Wingren Norman Escapade · Brasstown, NC · Accident · No injuries · Class 3 · Limited · Final report · May 9, 2022 · N86RD · Substantial damage > The failure of the engine gearbox drive flange, which resulted in a nose gear collapse during the subsequent precautionary landing in tall grass. - [NTSB WPR18FA131](https://openairdocs.org/ntsb/WPR18FA131.md): American Air Racing Thunder Mustang · Reno, NV · Accident · 1 fatal · Field investigation · Final report · May 2, 2018 · N352BT · Substantial damage > The pilot's failure to properly secure the engine coolant pump pulley during recent maintenance, which resulted in a loss of the engine's lubrication, cooling, and propeller control systems, and a forced landing, during which the airplane nosed over.… - [NTSB CEN18LA042](https://openairdocs.org/ntsb/CEN18LA042.md): Motley Gary W Zenith CH750 Cruzer · Louviers, CO · Accident · No injuries · Limited investigation · Final report · Nov 27, 2017 · N956GM · Substantial damage > The engine’s excessive cylinder head temperatures and the subsequent seizing of the engine, which resulted from an engine control unit that caused the engine’s fuel-air mixture to be too lean. - [NTSB WPR18LA036](https://openairdocs.org/ntsb/WPR18LA036.md): Doshier Wilbert A GT-500 · Willows, CA · Accident · Minor injuries · Class 3 · Limited · Final report · Nov 25, 2017 · N599RA · Substantial damage > A loss of engine power during takeoff due a coolant leak and the subsequent overheating of the engine, and the student pilot's failure to maintain airspeed and his exceedance of the airplane's critical angle of attack, which resulted in an aerodynamic stall… - [NTSB WPR18LA030](https://openairdocs.org/ntsb/WPR18LA030.md): Vanderark RV-10 · Sun Lakes, AZ · Accident · No injuries · Limited investigation · Final report · Nov 12, 2017 · N917VA · Substantial damage > The fatigue fractures of the upper and lower alternator attachment bolts, which decreased the common drive belt tension and resulted in the subsequent in-flight separation of an alternator drive belt, the overheating of the engine, and the subsequent total… - [NTSB CEN17LA058](https://openairdocs.org/ntsb/CEN17LA058.md): Bellanca 17 30A · Blaine, MN · Accident · No injuries · Limited investigation · Final report · Dec 18, 2016 · N4204B · Substantial damage > A total loss of engine power due to a lack of crankshaft lubrication to the No. 4 connecting rod journal. - [NTSB WPR14CA020](https://openairdocs.org/ntsb/WPR14CA020.md): L Goldner Zenith 701 · Milford, UT · Accident · No injuries · Data collection · Final report · Oct 17, 2013 · N67MG · Substantial damage > The pilot's improper decision to execute a precautionary landing to unsuitable terrain. - [NTSB WPR13LA363](https://openairdocs.org/ntsb/WPR13LA363.md): Quarnoccio Avid Flyer · White City, OR · Accident · No injuries · Limited investigation · Final report · Jul 13, 2013 · N399Q · Substantial damage > Excessive engine operating temperature, which resulted in engine failure and a forced landing. The reason for the excessive engine operating temperature could not be determined during postaccident engine examination. - [NTSB ERA11CA373](https://openairdocs.org/ntsb/ERA11CA373.md): Leatherman Karl L Zodiac CH 601 HDS · Gray Court, SC · Accident · No injuries · Data collection · Final report · Jun 30, 2011 · N67KL · Substantial damage > The total loss of engine power due to the failure of the radiator coolant supply fitting. - [NTSB CEN11CA410](https://openairdocs.org/ntsb/CEN11CA410.md): Taft, Malcolm J SR Glastar · Canon City, CO · Accident · No injuries · Data collection · Final report · Jun 6, 2011 · N238W · Substantial damage > A loss of engine power due to an overheated engine as a result of a malfunction of the modified engine cooling system, necessitating a forced landing on unsuitable terrain. - [NTSB DEN08LA108](https://openairdocs.org/ntsb/DEN08LA108.md): Mercer Avid Flyer Mk IV · Augusta, KS · Accident · No injuries · Limited investigation · Final report · Jun 21, 2008 · N6880L · Substantial damage > Failure of the engine cooling system's thermostat, causing the engine to overheat and seize. Contributing to the accident was the fence. ## The whole list in SQL Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS: ```sql SELECT c."ntsbNumber", c."eventDate", c."eventType", c."eventCity", c."eventStateOrRegion", a.n_number, a."aircraftMake", a."aircraftModel", c."highestInjuryLevel", c."totalFatal", c."completionStatus", c.report_url FROM 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' c LEFT JOIN 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' a ON a.case_mkey = c."mKey" AND a.position = 1 WHERE c."mKey" IN (SELECT f.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_findings.parquet' f WHERE starts_with(f."findingCode", '01058570')) ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC ``` This list as a web page: https://openairdocs.org/ntsb-findings/01058570/cases --- 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.