# NTSB investigations: Propeller system, general 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 WPR20LA270](https://openairdocs.org/ntsb/WPR20LA270.md): Piper PA 14 · Susanville, CA · Accident · 2 fatal · Class 3 · Limited · Final report · Aug 15, 2020 · N91449 · Substantial damage > The pilot’s decision to conduct a steep departure at a high-density altitude and the exceedance of the airplane’s critical angle of attack during a climb, which resulted in an accelerated stall and subsequent loss of control. Contributing to the accident was… - [NTSB ERA17FA050](https://openairdocs.org/ntsb/ERA17FA050.md): Curtiss JN4 · Williamson, GA · Accident · 2 fatal · Field investigation · Final report · Nov 17, 2016 · N1662 · Destroyed > The in-flight failure of the propeller due to excessive engine vibration loads and the use of an incorrectly-sized propeller, which resulted in a fatigue crack of the leading edge strip. Contributing to the accident was the inadequate repair of the propeller… - [NTSB ERA16FA325](https://openairdocs.org/ntsb/ERA16FA325.md): Mooney M20J · Pittstown, NJ · Accident · 2 fatal · Field investigation · Final report · Sep 25, 2016 · N526AM · Substantial damage > The pilot's improper landing touchdown attitude, which resulted in a propeller strike, and his inappropriate decision to abort the landing after the propeller had contacted the runway, which resulted in a loss of thrust and led to an aerodynamic stall during… - [NTSB ERA14LA279](https://openairdocs.org/ntsb/ERA14LA279.md): Frederick Hays-Roth Velocity Twin · Sebastian, FL · Accident · No injuries · Limited investigation · Final report · Jun 2, 2014 · N360VT · Substantial damage > The pilot’s improper landing flare, which resulted in a bounced landing. Also causal to the accident were the pilot’s subsequent delayed decision to abort the landing and his improper execution of the aborted landing, which resulted in the airplane exceeding… - [NTSB CEN14LA235](https://openairdocs.org/ntsb/CEN14LA235.md): Pazmany PL 4 · Yates City, IL · Accident · Minor injuries · Limited investigation · Final report · May 10, 2014 · N44PL · Substantial damage > A loss of propeller thrust due to a failure of the reduction drive unit resulting from the improper installation of the unit. Contributing to the accident was a lack of documentation for the reduction drive unit installation. - [NTSB CEN14CA039](https://openairdocs.org/ntsb/CEN14CA039.md): Wohaska John Parsons Stiles Gyro · Festus, MO · Accident · Minor injuries · Data collection · Final report · Oct 20, 2013 · N7064U · Substantial damage > The pilot's improper propeller adjustment, which resulted in decreased performance and a loss of aircraft control. - [NTSB ERA14LA004](https://openairdocs.org/ntsb/ERA14LA004.md): Mcdonald Howard Brian Zenair 701 · Zephyrhills, FL · Accident · No injuries · Limited investigation · Final report · Oct 19, 2013 · N538HB · Substantial damage > The failure of the propeller speed reduction unit drive belts due to inadequate belt tension being applied during installation, which resulted in a complete loss of thrust. - [NTSB CEN12LA539](https://openairdocs.org/ntsb/CEN12LA539.md): Gn-1 Aircamper Mathes · Burlington, WI · Accident · Minor injuries · Limited investigation · Final report · Aug 11, 2012 · N31TM · Substantial damage > The pilot's improper installation of the propeller bolts, which resulted in the in-flight separation of the propeller. - [NTSB CEN12CA597](https://openairdocs.org/ntsb/CEN12CA597.md): Bordelon Bruce Kitfox IV · Castlerock, MN · Accident · No injuries · Data collection · Final report · Jul 31, 2012 · N396BK · Destroyed > Propeller system failure during a go-around maneuver resulting in a forced landing. Contributing to the severity of damage to the airplane was the postimpact fire. - [NTSB WPR12LA265](https://openairdocs.org/ntsb/WPR12LA265.md): Roetman Ryland K JR Eagle · Rexburg, ID · Accident · Serious injuries · Limited investigation · Final report · Jun 16, 2012 · N106BD · Substantial damage > A loss of engine oil pressure, which led to the subsequent uncommanded loss of thrust and decrease in the propeller rpm during a low-level aerobatic maneuver. - [NTSB ERA11FA406](https://openairdocs.org/ntsb/ERA11FA406.md): Mooney M20K · Augusta, GA · Accident · 1 fatal · Field investigation · Final report · Jul 18, 2011 · N777CV · Substantial damage > The pilot’s decision to fly the airplane after maintenance personnel advised him that the airplane should not be flown because the pilot provided an incorrect propeller for installation and the subsequent failure of the propeller attachment bolts and the… - [NTSB WPR11LA015](https://openairdocs.org/ntsb/WPR11LA015.md): Mischke BD-5B · Burlington, WA · Accident · Serious injuries · Limited investigation · Final report · Oct 14, 2010 · N525BD · Substantial damage > The failure of the sprag clutch during takeoff, resulting in a loss of engine thrust. - [NTSB CEN10LA245](https://openairdocs.org/ntsb/CEN10LA245.md): Gross Cozy · Pine Bluff, AR · Accident · Minor injuries · Limited investigation · Final report · May 9, 2010 · N144TJ · Substantial damage > The inadvertent opening of the cockpit canopy during cruise flight for undetermined reasons, which allowed debris to impact and damage the pusher propeller with a resulting total loss of engine power. - [NTSB CEN10LA171](https://openairdocs.org/ntsb/CEN10LA171.md): Loehr Thomas H Zenith Stol CH701 · Eldon, MO · Accident · No injuries · Limited investigation · Final report · Mar 22, 2010 · N144AC · Substantial damage > A loss of engine thrust during takeoff due to the failure of the engine-to-propeller drive belts as a result of improper belt tension. Contributing to the accident was the non-certificated pilot's improper preflight inspection. - [NTSB ERA10LA175](https://openairdocs.org/ntsb/ERA10LA175.md): Smith Edward I Lancair IV-P · Hilton Head Island, SC · Accident · 1 fatal · Limited investigation · Final report · Mar 15, 2010 · N9JE · Minor damage > A loss of engine power due to the failure of the crankshaft as a result of a previous propeller strike. - [NTSB ERA09LA502](https://openairdocs.org/ntsb/ERA09LA502.md): M-Squared Sprint 1000 · Madeira Beach, FL · Accident · 2 fatal · Limited investigation · Final report · Sep 5, 2009 · N185SQ · Substantial damage > A loss of torque to the gearbox engine-side coupling flange bolts, which resulted in separation of the gearbox and propeller from the engine and the subsequent severing of the airplane's tail structure. - [NTSB ERA09LA477](https://openairdocs.org/ntsb/ERA09LA477.md): Vollenweider R/Hurst R F Vans RV-9A · Marianna, FL · Accident · Serious injuries · Limited investigation · Final report · Aug 23, 2009 · N362TS · Substantial damage > Failure of the propeller speed reduction gearbox for undetermined reasons. Contributing to the accident was the pilot’s decision to disregard the manufacturer's mandate to replace the gearbox, the manufacturer's failure to provide owners with technical… - [NTSB ERA09CA040](https://openairdocs.org/ntsb/ERA09CA040.md): Fox Jack G Mong Biwin · Thomasville, NC · Accident · Minor injuries · Data collection · Final report · Nov 2, 2008 · N318CF · Substantial damage > The builder’s failure to set adequate propeller pitch during propeller installation. - [NTSB SEA08LA149](https://openairdocs.org/ntsb/SEA08LA149.md): Van Heeswyk Lightning · Marana, AZ · Accident · 1 fatal · Limited investigation · Final report · Jun 1, 2008 · N62JV · Substantial damage > The insufficient clamping force resulting in a fatigue fracture of the propeller extension attachment bolts and subsequent separation of the propeller assembly in flight. Contributing to the accident was the pilot's failure to maintain sufficient airspeed to… - [NTSB CHI08CA103](https://openairdocs.org/ntsb/CHI08CA103.md): Koleno Titan T-51 · Geneva, OH · Accident · No injuries · Data collection · Final report · Apr 3, 2008 · N614TB · Substantial damage > The failure of the propeller pitch control mechanism during approach. Contributing to the accident were the inability of the pilot to maintain airspeed and altitude, and the unsuitable terrain. ## 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", '01046100')) ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC ``` This list as a web page: https://openairdocs.org/ntsb-findings/01046100/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.