NTSB investigations
1,408 cases where the first occurrence was “Loss of engine power(partial) - mech failure/malf”.
Cases, newest first
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 o.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o WHERE o.\"occurrenceNumber\" = 1 AND o.\"occurrenceCode\" = 352) 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 o.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o WHERE o."occurrenceNumber" = 1 AND o."occurrenceCode" = 352) 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 SEA03LA146Accident · No injuriesLimited investigationFinal reportCessna 182S · Henry's Lake, IDA set of inadequately torqued vacuum pump retaining nuts, leading to the failure of the vacuum pump gasket, resulting in oil exhaustion, which resulted in a loss of engine power during cruise. A ditch and rough uneven terrain were factors.NTSB MIA03LA143Accident · No injuriesLimited investigationFinal reportCessna 172P · Plymouth, FLThe pilot's continue operation with known deficiencies (engine vibration) resulting in a partial loss of engine power during climb after takeoff and overrun of the runway during the aborted takeoff.NTSB FTW03LA188Accident · Minor injuriesLimited investigationFinal reportMooney M20F · Kerrville, TXThe loss of engine power due to the failure of the number three cylinder as the result of undertorqued cylinder bolts. A contributing factor was the lack of suitable terrain for the forced landing.NTSB DEN03LA134Accident · No injuriesLimited investigationFinal reportPiper PA-32R-301 · Logan, UTthe loss of engine power due to partial mechanical failure, which resulted in a forced landing. Contributing factors include the pilot's improper preflight planning/preparation, the improper rigging of the propeller governor control, the high density altitude…NTSB ATL03LA109Accident · No injuriesLimited investigationFinal reportKeuthan Buccaneer II · Pell City, ALThe failure of the throttle cable due to fatigue resulting in a loss of engine power. Factor were uphill rough and uneven terrain.NTSB IAD03LA063Accident · Serious injuriesLimited investigationFinal reportPiper PA-23-180 · Akron, OHthe pilot's failure to maintain minimum control single engine airspeed (Vmc) during a loss of power on one engine, which resulted in a loss of control in flight an in-flight collision with terrain. A factor was a shifted main journal, which resulted in a…NTSB NYC03LA155Accident · Serious injuriesLimited investigationFinal reportBeech BE-56TC · Bethany, WVA total loss of power in the right engine for undetermined reasons. A factor was a partial loss of power in the left engine due to a loose oil line.NTSB DEN03LA123Accident · No injuriesLimited investigationFinal reportPiper PA-46-310P · Englewood, COthe pilot's improper flare which resulted in a hard landing. Contributing factors were the out-of-calibration waste gate actuator, a blown tire, and the airport sign.NTSB SEA03LA125Accident · No injuriesLimited investigationFinal reportSikorsky UH-19D · La Grande, ORThe cross threading and separation of the clutch assembly while maneuvering which resulted in a loss of engine power followed by a hard landing. An inadequate maintenance overhaul was a factor.NTSB NYC03LA137Accident · No injuriesLimited investigationFinal reportCessna 150F · Williamson, NYThe failure of a rocker arm shaft boss, which resulted in a partial loss of power and subsequent forced landing. A factor was the unsuitable terrain.NTSB IAD03CA062Accident · No injuriesData collectionFinal reportWilliam Stevens RAF2000 · Stoutsville, OHSeparation of the engine computer wire and connector, which resulted in a partial loss of engine power.NTSB NYC03FA131Accident · 4 fatalField investigationFinal reportCessna 205 · Jeannette, PAThe loss of power caused by fragments of the air filter being ingested in the engine. A factor was the pilot's delayed decision to perform a forced landing after experiencing a partial loss of engine power.NTSB SEA03LA076Accident · No injuriesLimited investigationFinal reportFokker F27MK 600 · Port Townsend, WAThe failure of the accessory drive shaft due to deterioration of bearing number 1 in the aft fork of the universal joint for undetermined reasons during cruise flight.NTSB FTW03FA118Accident · 2 fatalField investigationFinal reportBell 407 · Broadus, TXThe partial loss of engine power due to erratic fuel flow metering to the engine resulting from the single point failure of the PLA potentiometer in the hydro-mechanical fuel control unit. A contributing factor was the lack of suitable terrain to execute a…NTSB MIA03IA062Incident · No injuriesIncident investigationFinal reportCessna 500 · Fort Lauderdale, FLInadequate quality control following overhaul of the high-pressure compressor (HPC) impeller by other maintenance personnel that resulted in a machining groove on the aft face of the HPC impeller being undetected, which resulted in a fatigue fracture and an…NTSB SEA03FA026Accident · No injuriesField investigationFinal reportCessna 172K · Gig Harbor, WAThe loss of engine power in the climb due to the fracture of the number seven engine crankshaft cheek due to the propagation of a fatigue crack initiation point. Factors include a vehicle pulling onto the road that the pilot selected for his forced emergency…NTSB LAX03LA059Accident · Serious injuriesLimited investigationFinal reportFarmer R B DA5-A · Apple Valley, CAthe detonation of the number 1 and 3 cylinders and the subsequent over temperature of those cylinders and their corresponding pistons.NTSB FTW03LA066Accident · No injuriesLimited investigationFinal reportHughes 369E · Fritch, TXThe loss of engine power due to the failure of the generator input drive-end bearing, which resulted in excessive vibrations that induced a fatigue fracture of the Pc line leading to the engine fuel control unit. A contributing factor was the lack of suitable…NTSB CHI03LA043Accident · No injuriesLimited investigationFinal reportPiper PA-28-235 · Carleton, MIThe #2 cylinder exhaust valve failed due to undetermined reasons. A factor associated with the accident was the soft terrain encountered during the forced landing.NTSB LAX03LA050Accident · No injuriesLimited investigationFinal reportAnderson Rotorway Exec 162F · Phoenix, AZThe separation of the exhaust valve stem in the number 1 cylinder, which resulted in a partial loss of engine power during the landing flare and a hard landing.NTSB IAD03LA010Accident · Serious injuriesLimited investigationFinal reportCessna 152 · Springfield, OHInadequate installation of the number 3 cylinder.NTSB ATL03FA009Accident · 2 fatalField investigationFinal reportBeechcraft A60 · Jesup, GAThe loss of power in one engine and the loss of control for undetermined reasons.NTSB IAD03IA017Incident · No injuriesIncident investigationFinal reportCraig N. Moen RV-8 · Leesburg, VAA low-stress, high-cycle fatigue fracture of the right ignition timing rotor.NTSB NYC03IA011Incident · No injuriesIncident investigationFinal reportPiper PA-28-236 · Altoona, PAA failure of the fuel selector for an undetermined reason.NTSB LAX03LA004Accident · No injuriesLimited investigationFinal reportRans S-12 XL · Los Banos, CAThe loss of engine power for undetermined reasons and his failure to maintain adequate airspeed resulting in a stall. A contributing factor was the pilot's decision to conduct a downwind takeoff.NTSB IAD03LA002Accident · No injuriesLimited investigationFinal reportTaylorcraft 15A · Somerset, PAThe mechanic's failure to discover several mechanical deficiencies during a pre-buy inspection, which either independently or collectively resulted in a subsequent engine failure. A factor was the power lines in the forced landing area.NTSB LAX03GA001Accident · Serious injuriesFinal reportMcDonnell Douglas 600N · Rialto, CAan engine deceleration event due to a loose HMU fuel line fitting, which was a result of inadequate maintenance procedures in the 100/300-hour inspection. Also causal was the flying pilot's and pilot-in-command's delayed recognition of the power loss, as well…NTSB CHI02LA297Accident · No injuriesLimited investigationFinal reportJonas Nieuport · Creve Coeur, MOThe installation of improper carburetor jets resulting in an improper fuel mixture and loss of engine power.NTSB MIA02LA169Accident · No injuriesLimited investigationFinal reportCharles Maxted RV6 · Bay Minette, ALThe intentional operation of the airplane with known deficiencies with the right magneto resulting in the partial loss of engine power during the initial climb.NTSB CHI02LA281Accident · No injuriesLimited investigationFinal reportErcoupe 415-CD · Effingham, ILThe partial loss of engine power due to the seized exhaust valve. A factor was the soft field.NTSB ANC02LA121Accident · No injuriesLimited investigationFinal reportGardner Kitfox · Fairbanks, AKA partial loss of engine power due to an engine bearing failure during the takeoff initial climb. A factor in the accident was unsuitable terrain for a forced landing.NTSB NYC02FA178Accident · 7 fatalField investigationFinal reportBeechcraft 58P · Swanzey, NH**This report was modified on 2/24/2016. Refer to the public docket for this accident for additional information.** the pilot's improper preflight planning and his decision to depart with known landing gear system mechanical deficiencies, which resulted in a…NTSB NYC02LA169Accident · No injuriesLimited investigationFinal reportBellanca 8GCBC · Guilford, CTFatigue cracking of the number 3 cylinder head. A factor was the presence of protruding material on the cylinder barrel.NTSB LAX02LA249Accident · Minor injuriesLimited investigationFinal reportArns Spacewalker II · Irvine, CALoss of engine power due to an exhaust system leak and vapor lock.NTSB CHI02LA245Accident · Minor injuriesLimited investigationFinal reportPiper PA22-150 · Sauk City, WIA loss of engine power due to a seized exhaust valve. A related factor was the mowed hay field.NTSB DEN02GA085Accident · 1 fatalFinal reportAerospatiale SA315B · Estes Park, COthe pilot's abrupt collective input during water application to a forest fire. Contributing factors were encountering a vortex ring state, the inadvertent settling with power, the low altitude, and the mountainous terrain.NTSB MIA02LA133Accident · Serious injuriesLimited investigationFinal reportBell UH-1B · Lorida, FLThe pilot's continued operation with known engine anomalies resulting in loss of engine power due to failure of the engine fuel control pump drive clutch assembly due to wear and collision with the terrain during the resultant descent.NTSB CHI02LA186Accident · No injuriesLimited investigationFinal reportCessna 175 · Kaiser/Lake Oza, MOThe pilot's decision to conduct the flight with a known deficiency in the aircraft, a failure by the pilot to execute a precautionary landing due to "sluggish" performance during takeoff, the loss of engine power due to the malfunction of the left magneto,…NTSB LAX02LA218Accident · No injuriesLimited investigationFinal reportBell 47G-2 · Compton, CAthe failure and separation of a fan belt for the engine cooling system. A factor in the accident was the inadequate annual inspection 14 hours prior to the accident.NTSB SEA02LA121Accident · Minor injuriesLimited investigationFinal reportGrumman-Schweizer G-164B · Shelley, IDA loss of engine power due to the manufacturer's improperly machined threads, which prevented the cylinder base/head halves from being properly assembled, leading to fatigue propagation and the ultimate separation of the cylinder. A contributing factor was…NTSB DEN02LA064Accident · Serious injuriesLimited investigationFinal reportBeech 35 · Cortez, COan inadvertent stall as the pilot attempted to clear a cliff and ravine and avoid power lines, resulting in a collision with the ground. Contributing factors were a loss of engine power for undetermined reasons, a leaking carburetor and fuel pump, and the…NTSB CHI02LA166Accident · 1 fatalLimited investigationFinal reportJacobs Rutan Vari Viggen · Urbana, ILThe pilot's failure to abort the takeoff. Additional factors included the partial loss of engine power due to an excessively rich mixture as a result of a bad accelerator pump housing seal, and the pilot failed to maintain control of the airplane.NTSB SEA02FA097Accident · No injuriesField investigationFinal reportLewis Nieuport 11 · Independence, ORThe partial loss of engine power in maneuvering flight due to the rotation of the ignition distributor as a result of a failure to tighten the distributor positioning clamp after the last engine timing adjustment. Factors include an inadequate maintenance…NTSB FTW02LA174Accident · No injuriesLimited investigationFinal reportCessna 150 · Fort Worth, TXthe partial loss of engine power due to the mixture control rod separating from the carburetor. A contributing factor was the lack of suitable terrain for the forced landing.NTSB CHI02LA150Accident · No injuriesLimited investigationFinal reportPiper PA-24-250 · Sparta, ILThe total loss of engine power due to a separated cylinder and the failure of the pilot to perform a precautionary landing at the nearest suitable airport when the engine had a partial loss of engine power. The failure of the aircraft owners to perform an…NTSB IAD02LA053Accident · Minor injuriesLimited investigationFinal reportBeech V35A · Martinsburg, WVInadequate torque of the crankcase through bolts.NTSB LAX02LA172Accident · Serious injuriesLimited investigationFinal reportCessna 172K · Lake Thomas A., CAa partial loss of engine power due to the partial malfunction of the left magneto and leakage of the ignition leads for that magneto, due to inadequate maintenance inspections. Factors in the accident include the high density altitude, the maintenance…NTSB LAX02FA148Accident · 3 fatalField investigationFinal reportBeech C23 · Oak Shores, CAthe number 1 cylinder exhaust valve fractured and separated resulting in a loss of engine power and an off airport forced landing. A finding in the accident was the owner's failure to maintain the engine in accordance with the manufacturer's recommendations.NTSB LAX02LA136Accident · Minor injuriesLimited investigationFinal reportCessna 172 · Lake Los Angele, CAa reconditioned engine cylinder barrel failure due to previous rust damage and improper maintenance practices.NTSB ATL02LA070Accident · No injuriesLimited investigationFinal reportCessna 210 · Naples, FLTotal loss of engine power due to improper maintenance by company maintenance personnel which allowed the mixture control linkage to disconnect in flight which resulted in an emergency descent to landing into unsuitable terrain.