NTSB investigations
373 cases where NTSB found Recip eng cyl section.
Cases per year
| 2008 | 16 |
|---|---|
| 2009 | 23 |
| 2010 | 25 |
| 2011 | 28 |
| 2012 | 24 |
| 2013 | 23 |
| 2014 | 23 |
| 2015 | 21 |
| 2016 | 23 |
| 2017 | 23 |
| 2018 | 24 |
| 2019 | 18 |
| 2020 | 21 |
| 2021 | 12 |
| 2022 | 30 |
| 2023 | 17 |
| 2024 | 19 |
| 2025 | 3 |
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\", '01058530')) 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", '01058530')) 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 CEN25LA322Accident · No injuriesClass 3 · LimitedFinal reportPiper PA-18-150 · Joliet, ILThe failure of the No. 2 cylinder exhaust valve, which resulted in a total loss of engine power.NTSB ERA25FA230Accident · 2 fatalClass 3 · FieldFinal reportMooney M20F · Beverly, MAThe pilot’s failure to maintain control of the airplane while maneuvering to return to the airport which resulted in an aerodynamic stall. Contributing to the accident was the improperly installed No. 2 cylinder bottom spark plug by maintenance personnel,…NTSB CEN25LA093Accident · Minor injuriesClass 3 · LimitedFinal reportRobinson Helicopter R22 Beta · Spearman, TXImproperly torqued intake manifold bolts that allowed unmetered air to enter the engine, resulting in an overly lean fuel-air mixture, eventual failure of the No. 3 cylinder intake valve, and a total loss of engine power.NTSB WPR25LA030Accident · No injuriesClass 3 · LimitedFinal reportPiper PA-32-300 · Prescott Valley, AZSeparation of the No. 3 engine cylinder due to a loss of torque on the cylinder base nuts, which resulted in a loss of engine power and in-flight fire. Contributing to the accident was maintenance personnel’s failure to ensure the engine case and cylinder…NTSB ERA24LA392Accident · Minor injuriesClass 3 · LimitedFinal reportPiper PA28 · LaGrange, GAImproper manufacture of a cylinder exhaust valve guide by the engine manufacturer, which resulted in a stuck exhaust valve and a partial loss of engine power during initial climb.NTSB CEN24LA354Accident · Minor injuriesClass 3 · LimitedFinal reportCessna 170A · Marshall, INThe fatigue fracture of the No. 6 piston connecting rod, which resulted in a loss of engine power.NTSB CEN24LA317Accident · No injuriesClass 3 · LimitedFinal reportVans RV8 · Guthrie, OKA loss of engine power due to the separation and ingestion of an air filter retaining bracket into the engine cylinder.NTSB ERA24LA299Accident · Minor injuriesClass 3 · LimitedFinal reportBellanca 8GCBC · Frankford, DEA partial loss of engine power resulting from cylinder detonation and a cracked spark plug, which resulted in a forced landing and impact with terrain.NTSB WPR24LA229Accident · Minor injuriesClass 3 · LimitedFinal reportCessna 172N · San Diego, CAA failure of the No. 2 cylinder due to fatigue cracking as the result of an undersized fillet radius around the edge of the cylinder head dome.NTSB ANC24LA057Accident · No injuriesClass 4 · LimitedFinal reportDehavilland-Kenmore DHC-2 · Juneau, AKA partial loss of engine power during initial climb due to a cracked cylinder.NTSB ERA24LA271Accident · No injuriesClass 3 · LimitedFinal reportCessna 172 · Hernando, FLThe improper installation of a cylinder rocker stud by maintenance personnel, which resulted in a partial loss of engine power and subsequent forced landing.NTSB WPR24LA210Accident · No injuriesClass 3 · LimitedFinal reportLancair LC42-550FG · Humboldt Bay, CAMaintenance personnel’s incorrect installation of an engine rocker cover gasket, which resulted in oil exhaustion and subsequent loss of engine power during the initial climb.NTSB WPR24LA198Accident · Minor injuriesClass 3 · LimitedFinal reportWarren B Cox COX Breezy · Albuquerque, NMThe pilot’s exceedance of the airplane’s critical angle of attack while maneuvering for landing following a partial loss of engine power after takeoff, which resulted in an aerodynamic stall and loss of control. Contributing to the accident was maintenance…NTSB WPR24LA194Accident · No injuriesClass 3 · LimitedFinal reportCessna 150M · Roll, AZThe failure of the No. 2 intake valve due to inadequate seating, which resulted from valve guide-to-seat misalignment and associated wear.NTSB ERA24LA239Accident · Serious injuriesClass 3 · LimitedFinal reportCessna 150 · San Juan, PRA partial loss of engine power due to the failure of the No. 2 cylinder rocker shaft bosses from fatigue cracking.NTSB ERA24LA222Accident · Serious injuriesClass 3 · LimitedFinal reportCessna 177 · Selma, ALInsufficient lubrication of the engine’s internal components, which resulted in a total loss of engine power.NTSB ERA24LA190Accident · Minor injuriesClass 3 · LimitedFinal reportBeech B24R · Lumberton Township, NJThe pilot/owner’s failure to ensure adequate maintenance of the airplane, which resulted in a partial loss of engine power during takeoff.NTSB ANC24LA027Accident · No injuriesClass 3 · LimitedFinal reportPiper PA-28-151 · Marana, AZA total loss of engine power due to a failure of the No. 4 cylinder piston boss.NTSB ERA24FA160Accident · 1 fatalClass 3 · FieldFinal reportArthur B Canning Merlin Lite · Mulberry, FLThe pilot/builder’s modifications of the motorglider’s engine, which resulted in an excessively lean fuel air mixture, preignition, piston failure, and a subsequent total loss of engine power during the initial climb. Contributing to the outcome was the…NTSB CEN24LA121Accident · No injuriesClass 3 · LimitedFinal reportPiper PA-28-181 · Watertown, SDThe stuck No. 2 cylinder exhaust valve, which resulted in a partial loss of engine power and a forced landing due to an undersized exhaust valve guide. Contributing to the accident were the improper manufacture of the engine cylinders, and the operation of…NTSB CEN24LA120Accident · Serious injuriesClass 3 · LimitedFinal reportPulsar I · Patterson, LAThe non-certificated pilot’s decision to operate an unairworthy engine, which led to cylinder failure and a loss of engine power.NTSB WPR24LA076Accident · No injuriesClass 3 · LimitedFinal reportPiper PA-28-181 · Colorado City, AZThe loss of engine power due to the failure of the No. 2 piston pin plug, which resulted in oil starvation and subsequent failure of the No. 3 connecting rod. Contributing to the accident was the inadequate engine inspections by maintenance personnel.NTSB CEN24LA079Accident · No injuriesClass 3 · LimitedFinal reportCirrus Design SR22T · Davenport, IAThe fatigue failure of the No. 5 cylinder head, which resulted in a total loss of engine power. Contributing to the accident was the maintenance which did not fully blend to the depth necessary to preclude the failure.NTSB CEN24LA036Accident · No injuriesClass 3 · LimitedFinal reportTextron 172S · Erie, COA partial loss of engine power while maneuvering at a low altitude due to a stuck exhaust valve.NTSB ERA24LA018Accident · No injuriesClass 3 · LimitedFinal reportRoth Frank Ronald Avid Aircraft · Knoxville, TNA total loss of engine power due to a seized piston in the power take-off cylinder.NTSB WPR23LA352Accident · Serious injuriesClass 3 · LimitedFinal reportWayne Toddun Sling 4 TSI · San Pedro, CAA total loss of engine power due to a failure of the No. 4 cylinder exhaust valve from overheating and excessive wear.NTSB ERA23LA372Accident · Minor injuriesClass 3 · LimitedFinal reportCessna 182P · Prospect, TNA loss of engine power due to the fatigue failure of the No. 6 cylinder exhaust valve rocker boss.NTSB CEN23LA370Accident · No injuriesClass 3 · LimitedFinal reportPiper PA31 · Durant, OKThe loosening of a connecting rod cap nut for reasons that could not be determined, which resulted in a mechanical failure of the engine and an in-flight fire.NTSB ERA23LA324Accident · Serious injuriesClass 3 · LimitedFinal reportJamros Robert L JR Challenger II · Port Orange, FLThe total loss of engine power due to an out-of-temperature seizure of the PTO cylinder.NTSB ANC23LA051Accident · No injuriesClass 3 · LimitedFinal reportStinson 108 · Ninilchik, AKA partial loss of engine power due to failure of the No. 1 cylinder intake valve head.NTSB ERA23LA297Accident · Minor injuriesClass 3 · LimitedFinal reportCessna 150L · Elberton, GAThe pilot’s decision to take off with a known engine issue, which resulted in a partial loss of power on the initial climb due to the No. 1 cylinder’s exhaust valve becoming stuck. Contributing to the outcome, was the pilot’s delay in aborting the takeoff.NTSB WPR23FA256Accident · 1 fatalClass 3 · FieldFinal reportCessna 182N · St Maries, IDThe total loss of engine power due to the failure of the No. 3 exhaust valve for reasons that could not be determined. Contributing to the accident was the pilot’s failure to maintain control of the airplane after the loss of engine power.NTSB ERA23FA265Accident · 1 fatalClass 3 · FieldFinal reportBeech B35 · Orangeburg, SCA stuck No. 3 cylinder intake valve, which resulted in a partial loss of engine power and subsequent forced landing.NTSB ERA23LA264Accident · Minor injuriesClass 3 · LimitedFinal reportPiper PA28 · Lancaster, TNThe fatigue failure of an exhaust valve, resulting in a partial loss of engine power.NTSB WPR23LA196Accident · Minor injuriesClass 3 · LimitedFinal reportCessna 172H · Seattle, WAA stuck exhaust valve that resulted in a partial loss of engine power and a forced water ditching.NTSB CEN23LA188Accident · No injuriesClass 3 · LimitedFinal reportCessna 172 · Flower Mound, TXThe fatigue failure of the rocker arm which resulted in a partial loss of engine power. Contributing was the airplane operator’s failure to inspect the rocker arm in accordance with the engine manufacturer’s service bulletin.NTSB WPR23LA175Accident · Minor injuriesClass 3 · LimitedFinal reportCessna P337H · Laurel, MTA partial loss of engine power to the rear engine resulting from cylinder detonation for undetermined reasons, which resulted in a forced landing and impact with terrain.NTSB ERA23LA197Accident · Serious injuriesClass 3 · LimitedFinal reportCessna 177RG · Crestview, FLThe total loss of engine power due to the loosening and separation of the No. 1 connecting rod cap nuts in flight, resulting in catastrophic internal engine damage. Contributing to the accident was the pilot/owner’s failure to comply with the engine…NTSB ERA23FA113Accident · 2 fatalClass 3 · FieldFinal reportBeech A36 · North Castle, NYThe pre-ignition/detonation damage to the No. 4 piston for reasons that could not be determined, which allowed the crankcase to become pressurized and resulted in oil exhaustion and subsequent catastrophic internal engine failure.NTSB ERA23LA073Accident · No injuriesClass 3 · LimitedFinal reportChilds Michael A Rotorway Exec 162-F · Titusville, FLA failure of the No. 4 exhaust valve spring retainer, which resulted in a partial loss of engine power.NTSB CEN23LA040Accident · Minor injuriesClass 3 · LimitedFinal reportCessna 150L · Cypress, TXFailure of the engine exhaust valve during cruise flight, which resulted in a loss of engine power and a forced landing.NTSB WPR23LA031Accident · Serious injuriesClass 3 · LimitedFinal reportCessna 150G · Star Valley, AZThe failure of the No. 1 cylinder exhaust or intake valve which resulted in the partial loss of engine power and subsequent impact with terrain.NTSB CEN23LA027Accident · No injuriesClass 3 · LimitedFinal reportCessna R172E · Aguilar, COFailure of the engine cylinder assembly, which resulted in a loss of engine power during cruise flight and an impact with a fence during the forced landing.NTSB ERA23LA034Accident · No injuriesClass 3 · LimitedFinal reportCessna A185E · York, PAOil starvation of the number 1 connecting rod bearings, which resulted in a total loss of engine power.NTSB WPR23LA016Accident · No injuriesClass 3 · LimitedFinal reportQuickie Q2 · Laramie, WYThe partial loss of engine power due to the seizure of the No. 1 cylinder exhaust valve in the valve guide.NTSB WPR22LA363Accident · No injuriesClass 3 · LimitedFinal reportRobinson Helicopter R44 · Cedar City, UTA partial loss of engine power due to a damaged cylinder intake valve and subsequent collision with terrain during an autorotation.NTSB WPR22LA351Accident · Minor injuriesClass 3 · LimitedFinal reportCessna 172L · Ventura, CAA partial loss of engine power due to the fatigue fracture of the No. 4 exhaust valve.NTSB ERA22FA418Accident · 1 fatalClass 3 · FieldFinal reportPiper PA32 · Afton, VAA catastrophic engine failure due to oil starvation, which resulted in a total loss of engine power at night over mountainous terrain.NTSB ERA22LA412Accident · No injuriesClass 3 · LimitedFinal reportEngineering & Research 415-C · Galion, OHA partial loss of engine power due to an exhaust valve that was stuck in the open position.NTSB CEN22LA413Accident · No injuriesClass 3 · LimitedFinal reportPiper PA32RT · Bulverde, TXThe partial loss of engine power due to excessive carbon deposits that resulted in one or more stuck exhaust valves.