NTSB investigations
177 cases where NTSB found Propeller system.
Cases per year
| 2008 | 18 |
|---|---|
| 2009 | 13 |
| 2010 | 13 |
| 2011 | 13 |
| 2012 | 15 |
| 2013 | 10 |
| 2014 | 14 |
| 2015 | 11 |
| 2016 | 6 |
| 2017 | 8 |
| 2018 | 7 |
| 2019 | 10 |
| 2020 | 7 |
| 2021 | 5 |
| 2022 | 5 |
| 2023 | 9 |
| 2024 | 9 |
| 2025 | 4 |
Where
Open the mapLatest cases
Query with SQL
duckdb -csv -c "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\", '010461')) ORDER BY c.\"eventDate\" DESC, c.\"ntsbNumber\" DESC"
Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.
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", '010461')) ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
Run it at the DuckDB prompt, or in any tool that reads Parquet over HTTPS. More ways to query the release are on Use the data.
NTSB ERA25LA236Accident · No injuriesClass 4 · LimitedFinal reportSting Sport TL-2000 · Dunavant, VAThe inflight failure of the propeller due to its exceedance of the manufacturer’s overhaul requirement.NTSB ANC25LA028Accident · Minor injuriesClass 3 · LimitedFinal reportPiper PA-28-140 · Royal Kunia, HIImproper alteration of the crankshaft propeller flange at an unknown time, which resulted in an in-flight separation of the propeller assembly.NTSB CEN25LA117Accident · No injuriesClass 3 · LimitedFinal reportVans RV-7A · Plainview, TXThe improper machining of the propeller blade bearing seat, which resulted in an inflight propeller blade fatigue failure. Contributing to the accident was the improper machining of the propeller hub and propeller blade root and machining surface quality…NTSB WPR25LA096Accident · No injuriesClass 3 · LimitedFinal reportCessna 150J · Minersville, UTThe failure of the propeller blade due to fatigue that originated from an impact pit sustained at an unknown time. Contributing to the accident was the failure of unknown maintenance personnel to detect and repair the impact pit before painting the propeller,…NTSB CEN25LA007Accident · No injuriesClass 3 · LimitedFinal reportMooney M20E · Richmond, TXThe partial separation of a portion of the propeller spinner and its mounting bulkhead along with the upper cowl fairing while in a full-power climb.NTSB ERA24LA332Accident · No injuriesClass 4 · LimitedFinal reportBucker Jungmann C.A.S.A. 1.131 · Red Hook, NYThe Great Lakes pilot's failure to maintain adequate clearance from the Bucker Jungmann while maneuvering during an air show, which resulted in a midair collision, the inability of the Bucker Jungmann to maintain altitude, and its subsequent forced landing.NTSB WPR24LA260Accident · No injuriesClass 3 · LimitedFinal reportKitfox Series V · La Grande, ORSeparation of the propeller blades from progressive damage at the blade roots due to overtightening of the hub bolts.NTSB ERA24FA310Accident · 1 fatalClass 3 · FieldFinal reportWilliams John Titan T-51 Mustang · Geneva, OHA sudden propeller overspeed and subsequent separation of the propeller blades and hub, while maneuvering at high speed and at low altitude, which resulted in a collision with a tree during the subsequent forced landing attempt.NTSB ANC24LA064Accident · No injuriesClass 3 · LimitedFinal reportDehavilland DHC-2T · Petersville, AKAn in-flight loss of thrust due to an uncommanded feathering of the propeller for reasons that could not be determined.NTSB ERA24LA303Accident · No injuriesClass 3 · LimitedFinal reportJones LONG-EZ · Thomasville, GAThe pilot reported that he was maneuvering around weather at 11,500 ft mean sea level (msl) when he made a rapid descent to 3,500 ft msl to remain clear of clouds. He reported that he did not exceed the airplane’s maneuvering speed during the descent, and…NTSB ERA24LA223Accident · No injuriesClass 3 · LimitedFinal reportBeechcraft TC-12B · Lehigh Acres, FLThe asymmetric reverse thrust during the landing roll for reasons that could not be determined, resulting in the flightcrew’s inability to maintain directional control and a subsequent runway excursion.NTSB ERA24LA208Accident · Serious injuriesClass 3 · LimitedFinal reportAdmore International Jets Aircam · DeLand, FLThe uncommanded movement of the left propeller into reverse during approach for undetermined reasons, resulting in an in-flight loss of control of the airplane at low altitude during approach.NTSB CEN24LA187Accident · Serious injuriesClass 4 · LimitedFinal reportAviat A1 · Poole, NEThe non-certificated pilot’s failure to configure the airplane for takeoff, which resulted in a runway excursion.NTSB WPR24FA053Accident · 1 fatalClass 3 · FieldFinal reportBeauchamp Norm Kitfox · Eloy, AZThe separation of a propeller blade during the initial climb due to insufficient blade retention forces. Contributing to the accident was the propeller blade retention design, manufacturing defects that prevented the propeller from achieving adequate grip…NTSB CEN24LA061Accident · No injuriesClass 3 · LimitedFinal reportCessna 421C · McGregor, TXThe failure of the spring pin in the right propeller governor, which precluded the pilot from controlling the propeller pitch to maintain engine rpm, resulting in a loss of engine thrust, excessive drag, and the subsequent forced landing to a field.NTSB CEN24LA038Accident · Minor injuriesClass 3 · LimitedFinal reportBede BD-4 · Lowell, INFatigue cracking of the propeller blade root, which resulted in the in-flight separation of the propeller blade from its root. Contributing to the accident was the improper machining of the blade root threads, which resulted in chatter/ratchet marks that…NTSB DCA23LA397Accident · No injuriesClass 4 · LimitedFinal reportSupernal SUP83-1 · California City, CAA loss of control in flight due to a loss of electrical power to one of the lift-motors.NTSB WPR23LA283Accident · Minor injuriesClass 3 · LimitedFinal reportBeech C35 · Rock Springs, WYMaintenance personnel’s failure to properly secure the propeller pitch control rod castellated nut hardware, which resulted in an in-flight failure of the pitch control bearing and subsequent loss of engine RPM and thrust.NTSB ERA23LA279Accident · Serious injuriesClass 4 · LimitedFinal reportEdmisten Robert Eugene SR Rans S-14 Airaile · Bonaire, GAThe pilot’s failure to properly adjust the propeller’s pitch angle, which resulted in a loss of thrust and an inability to maintain altitude.NTSB ERA23FA274Accident · 3 fatalClass 3 · FieldFinal reportPiper PA-30 · Claxton, GAThe flight crew’s improper fuel management, which resulted in the airplane’s right engine being starved of fuel and its subsequent total loss of power.NTSB CEN23LA218Incident · No injuriesClass 3 · LimitedFinal reportPiper J3C · Romeoville, ILThe inflight failure of the propeller blade due to fatigue cracking from corrosion pits, initiating at the midpoint of the cambered face.NTSB WPR23LA149Accident · No injuriesClass 3 · LimitedFinal reportStevens Kelly C RV-7 · Morgan, UTThe pilot/builder improperly torqued the propeller attachment bolts while reinstalling the propeller, which resulted in the fatigue failure of the bolts and the separation of the propeller assembly.NTSB ERA22FA387Accident · 2 fatalClass 3 · FieldFinal reportSea & Sky Krucker Cygnet · Emily, MNThe pilot’s operation of the weight-shift control aircraft over its design gross weight and his decision to take off with the engine operating at less than the specified takeoff rpm, which resulted in degraded takeoff and climb performance. Contributing to…NTSB CEN22LA250Incident · No injuriesClass 3 · LimitedFinal reportBeech 58 · Evansville, INThe 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 the accident flight.NTSB ERA22LA237Accident · Minor injuriesClass 3 · LimitedFinal reportDiamond DA42 · Lehighton, PAThe flight instructor’s inadequate supervision of the flight and his failure to secure the right engine following an unsuccessful engine restart attempt, which resulted in the airplane’s inability to maintain altitude and a subsequent off-airport landing.NTSB WPR22LA114Accident · Serious injuriesClass 3 · LimitedFinal reportCessna 208B · Oceanside, CAThe pilot’s intentional inflight operation of the propeller in beta, which led to an aerodynamic lock, his inability to restore forward thrust, and subsequent collision with terrain.NTSB DCA22FA082Accident · No injuriesClass 3 · FieldFinal reportJoby Aero JAS4-2 · Jolon, CAThe separation of a propeller blade during expansion flight testing that resulted in cascading effects to include the separation of multiple propulsion motor/propeller assemblies and the loss of remote pilot control of the aircraft. Contributing to the…NTSB CEN22LA085Accident · No injuriesClass 3 · LimitedFinal reportBeech A100 · West Helena, ARThe malfunction of the propeller autofeather system after takeoff for undetermined reasons, which resulted in both propellers going into feather and a hard landing.NTSB WPR21LA301Accident · No injuriesClass 3 · LimitedFinal reportPiper PA-28-140 · Amado, AZThe inflight separation of a section of a propeller blade due to a fatigue crack, which resulted in a forced landing.NTSB ERA21LA289Accident · No injuriesClass 3 · LimitedFinal reportPiper PA-23 · Easton, MDA total loss of left engine power and uncommanded feathering of the left propeller for reasons that could not be determined.NTSB WPR21LA208Accident · Minor injuriesClass 3 · LimitedFinal reportBoeing A75N1(PT17) · Hollister, CAThe improper installation of a relief valve spring that was shorter than the standard spring length, which slowed the response of the propeller governor to change the pitch of the blades during climbout, resulting in a partial loss of power.NTSB ERA21LA223Accident · No injuriesClass 3 · LimitedFinal reportZenith Zodiac 601 XL · McKenzie, TNThe improper installation and inspection of the propeller, which resulted in an in-flight separation of the propeller assembly.NTSB ERA20CA296Accident · No injuriesClass 4 · Data collectionFinal reportBeech 55 · Nashville, TNThe pilot's inadvertent feathering of the propellers during the landing flare, which resulted in a hard landing. A factor in the accident was the instructor's failure to fully monitor the pilot's manipulation of the levers in the airplane's non-standard…NTSB WPR20LA270Accident · 2 fatalClass 3 · LimitedFinal reportPiper PA 14 · Susanville, CAThe 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 CEN20LA207Accident · No injuriesClass 3 · LimitedFinal reportIcon A5 · Duluth, MNThe pilot’s failure to remove an object from the airplane’s exterior, which impacted the propeller blades when he applied full power, causing them to fracture and damage the airplane.NTSB ERA20LA202Accident · 2 fatalClass 3 · LimitedFinal reportPiper PA23 · San Juan, PRThe pilot’s intentional operation of the airplane with known deficiencies of the left engine and subsequent in-flight loss of control after takeoff. Contributing to the loss of engine power was internal contamination of the left servo fuel injector.…NTSB ERA20CA112Accident · Minor injuriesClass 4 · Data collectionFinal reportBeech 58 · Augusta, GAThe pilot's failure to land and stop the airplane within the available runway, which resulted in a runway overrun. Contributing to the outcome was the pilot's inadvertent feathering of both propellers during approach to landing.NTSB ERA20LA077Accident · No injuriesClass 3 · LimitedFinal reportVelocity Elite RG · St. Petersburg, FLA failure of the propeller pitch change electric motor, which resulted in an improper setting for takeoff and a subsequent runway overrun. Also causal was the inadequate maintenance and inspection of the propeller system and the pilot’s failure to follow the…NTSB WPR20LA062Accident · No injuriesClass 3 · LimitedFinal reportCessna 172H · El Monte, CAThe inflight separation of a section of a propeller blade due to a fatigue crack which resulted in a forced landing.NTSB GAA20CA039Accident · No injuriesData collectionFinal reportZenair CH 701 · Safford, AZThe in-flight separation of a propeller blade for reasons that could not be determined based on the available evidence, which resulted in an off-airport landing on soft sand and the separation of main landing gear. Contributing to the accident was the pilot’s…NTSB WPR19LA273Accident · No injuriesClass 3 · LimitedFinal reportSmyth Sidewinder · Tucumcari, NMThe in-flight separation of a section of a propeller blade due to a fatigue crack, which resulted in a forced landing.NTSB CEN19LA313Accident · No injuriesClass 3 · LimitedFinal reportJackson Velocity · Mack, COA propeller overspeed due to failure of the electronic ignition timing ring attachment screws, and a runway overrun during the subsequent forced landing.NTSB CEN19LA295Accident · Minor injuriesClass 3 · LimitedFinal reportAir Tractor AT502 · Olney, TXA loss of thrust control due to a propeller surge event, which resulted in a forced landing shortly after takeoff.NTSB ANC19LA046Accident · No injuriesClass 3 · LimitedFinal reportCessna 208B · Lahaina, HIThe pilots’ failure to maintain a proper approach speed and their decision to continue the approach for landing, which resulted in the airplane landing long and a subsequent runway overrun.NTSB ERA19LA232Accident · Minor injuriesClass 3 · LimitedFinal reportVans RV7 · Ocean City, MDThe disconnection of the propeller governor control arm from the propeller governor due to a missing attachment bolt, which resulted in a partial loss of engine power during takeoff when the governor control vibrated to a high pitch, low rpm setting.NTSB ERA19LA228Accident · No injuriesClass 3 · LimitedFinal reportPietenpol BIG Piet · Gainesboro, TNSeparation of the spinner cap for reasons that could not be determined based on available evidence, which resulted in contact and subsequent separation of the wooden propeller blade tip.NTSB ERA19LA214Accident · Minor injuriesClass 3 · LimitedFinal reportPipistrel Sinus · Haverhill, MAThe pilot's failure to utilize the proper procedure and unfeather the motorized glider’s propeller prior to an in-flight engine restart, resulting in a lack of thrust and subsequent forced landing.NTSB ERA19LA096Accident · 1 fatalLimited investigationFinal reportConvair C131 · Atlantic Ocean (Atlantic Ocean)The captain's decision to continue with the flight with a malfunctioning left engine propeller control and the subsequent loss of engine power on both engines for undetermined reasons, which resulted in ditching into the ocean. Contributing to the accident…NTSB CEN19LA056Accident · 2 fatalLimited investigationFinal reportDouglas DC3C · Kidron, OHThe loss of airplane control after an engine flameout and auto-feather system interruption during the takeoff climb, which resulted in an impact with terrain.NTSB ERA19FA060Accident · 2 fatalClass 2 · FieldFinal reportCessna 335 · Fort Lauderdale, FLThe pilot's improper decision to fly the unairworthy airplane and his failure to feather the left propeller following a partial loss of power from the left engine after takeoff. Also causal was the partial loss of power to the left engine due to detonation.