NTSB investigations
1,408 cases where the first occurrence was “Loss of engine power(partial) - mech failure/malf”.
Cases per year
| 1982 | 91 |
|---|---|
| 1983 | 77 |
| 1984 | 88 |
| 1985 | 82 |
| 1986 | 76 |
| 1987 | 58 |
| 1988 | 76 |
| 1989 | 67 |
| 1990 | 74 |
| 1991 | 62 |
| 1992 | 48 |
| 1993 | 53 |
| 1994 | 54 |
| 1995 | 60 |
| 1996 | 42 |
| 1997 | 43 |
| 1998 | 50 |
| 1999 | 35 |
| 2000 | 41 |
| 2001 | 28 |
| 2002 | 36 |
| 2003 | 24 |
| 2004 | 45 |
| 2005 | 33 |
| 2006 | 28 |
| 2007 | 37 |
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 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 LAX08LA025Accident · Serious injuriesLimited investigationFinal reportInterplane XJ · Independence, ORA partial loss of engine power for undetermined reasons. Also causal was the pilot's failure to maintain adequate airspeed, which resulted in a spin and collision with terrainNTSB DEN08LA014Accident · No injuriesLimited investigationFinal reportCessna 210 · Canon City, COThe failure of the engine throttle cable resulting in a lack of engine power when commanded.NTSB NYC08FA012Accident · 4 fatalField investigationFinal reportAero Commander 560-F · Wiley Ford, WVA partial power loss in the right engine due to the failure of the number one exhaust valve, and the airplane's inability to maintain a climb on one engine for unknown reasons. Contributing to the accident were fog and rising terrain. [This report was…NTSB LAX08LA009Accident · Minor injuriesLimited investigationFinal reportCessna 172L · Prescott, AZThe failure of maintenance personnel to detect fatigue cracks in the number 3 exhaust rocker arm, which lead to a partial loss of engine power.NTSB CHI08CA015Accident · Minor injuriesData collectionFinal reportCessna 150H · Clarksville, ARFailure of the flight instructor to identify the lack of airplane performance in a timely manner and to reject the takeoff. An additional cause was the partial loss of engine power for undetermined reasons. A contributing factor was the presence of the power…NTSB SEA08LA001Accident · No injuriesLimited investigationFinal reportCessna 172N · Green Valley, AZThe loss of engine power due to the separation of the number three cylinder exhaust rocker arm.NTSB ATL07LA131Accident · No injuriesLimited investigationFinal reportGrumman G-164A · Pittsgrove, NJA partial loss of engine power due to low compression for undetermined reasons.NTSB NYC07CA230Accident · No injuriesData collectionFinal reportGrenier Kitfox IV · Moultonboro, NHThe failure of both spark plugs in the number 3 cylinder which resulted in a partial loss of engine power.NTSB NYC07LA221Accident · No injuriesLimited investigationFinal reportPiper PA-23-250 · Bernardsville, NJThe failure by unidentified maintenance personnel to follow appropriate procedures when attaching the No. 3 cylinder, which was replaced subsequent to the engine overhaul and not entered in the logbook, resulting in fatigue failures of the cylinder studs.NTSB DEN07LA149Accident · No injuriesLimited investigationFinal reportPiper PA-31P · Newton, KSThe failure of the exhaust gasket on the number 6 cylinder for undetermined reasons. A contributing factor was the lack of suitable terrain for the forced landing.NTSB DEN07LA138Accident · Minor injuriesLimited investigationFinal reportAir Tractor AT-301 · Alamosa, COThe failure of the number one cylinder due to fatigue. Contributing to the accident was the pilot's diminished visual lookout due to the oil covered windscreen.NTSB ENG07IA034Incident · No injuriesIncident investigationFinal reportLearjet · Salt Lake City, UTThe fatigue fracture of the fan blade due to the blade vendor's improper setup of the forging dies, which resulted in fan blades with airfoils that were below the minimum thickness in the highest stressed area of the airfoil and resulted in operating stresses…NTSB MIA07LA132Accident · Minor injuriesLimited investigationFinal reportRoger A Dalke E.B. Jenny · Wakefield, VAThe pilot/owner's inadequate maintenance which resulted in a radiator leak, a loss of engine coolant, the engine overheating, and partial loss of engine power.NTSB CHI07LA240Accident · No injuriesLimited investigationFinal reportAircoupe F-1A · Greenwood, ILThe loss of engine power due to carburetor icing, which resulted in the pilot having to perform a forced landing to unsuitable terrain. Factors contributing to the accident were the carburetor icing conditions and the broken carbuerator heat lever.NTSB DFW07LA165Accident · No injuriesLimited investigationFinal reportAir Tractor AT-502 · Slaton, TXAn uncontained failure of the turbine engine's power section for undetermined reasons.NTSB DEN07LA124Accident · No injuriesLimited investigationFinal reportCessna A185F · Englewood, COThis case was revised 10/31/2007. Low compression in number 2 cylinder, which reduced the airplane's climb capability. Contributing factors in this accident were the high density altitude conditions, and the tree.NTSB SEA07IA201Incident · No injuriesIncident investigationFinal reportCirrus Design SR22 · Reno, NVThe failure of the left turbocharger as a result of a production defect in the unit's compressor due to a machining process change by the manufacturer that was made without formal documentation or substantiation.NTSB ANC07LA058Accident · Minor injuriesLimited investigationFinal reportCessna 150 · Fairbanks, AKA partial loss of engine power due to a stuck engine exhaust valve during takeoff initial climb. A contributing factor was the airplane's excessive gross weight.NTSB ANC07LA056Accident · No injuriesLimited investigationFinal reportPiper PA-12 · Anchorage, AKThe malfunction of an engine magneto during cruise flight, which resulted in a partial loss of engine power, and an on-ground encounter with terrain. A factor associated with the accident was the high vegetation at the off-airport landing site.NTSB MIA07LA111Accident · Serious injuriesLimited investigationFinal reportBeech A36 · Cullman, ALThe pilot’s mismanagement of an in-flight emergency, which resulted in a gear-up landing and runway overrun. Contributing to the accident was a breach to the engine crankcase above and in line with the No. 1 cylinder.NTSB ATL07LA092Accident · No injuriesLimited investigationFinal reportCessna 172 · Brinson, GAA partial loss of engine power due to a blocked carburetor jet.NTSB SEA07LA170Accident · No injuriesLimited investigationFinal reportPiper PA-28-161 · Redlands, CAThe restriction of the carburetor float as a result of a misadjusted retractor clip. A contributing factor was the fire.NTSB DFW07CA126Accident · Minor injuriesData collectionFinal reportGray Jack Tean Rocket F1 · Seabrook, TXThe loss of engine power for undetermined reason. A contributing factor was the lack of suitable terrain for the precautionary landing.NTSB LAX07LA179Accident · Minor injuriesLimited investigationFinal reportCessna TU206G · Napa, CAFailure of the number 5 connecting rod due to oil starvation.NTSB NYC07LA125Accident · Minor injuriesLimited investigationFinal reportCessna 172E · Leesburg, VAThe loss of engine power that resulted from the failure of an exhaust valve rocker arm during cruise.NTSB LAX07LA153Accident · No injuriesLimited investigationFinal reportPiper PA-28-140 · Tucson, AZA loss of engine power while maneuvering due to a broken exhaust valve. Contributing to the accident was the rough terrain.NTSB NYC07LA107Accident · Serious injuriesLimited investigationFinal reportGrumman S-2B · Cherry Point, NCThe flightcrew's failure to comply with the published emergency procedure following a loss of engine power on the right engine. Contributing to the accident was the failure of a magneto in the right engine.NTSB ATL07LA079Accident · Minor injuriesLimited investigationFinal reportHughes 369D · Whiteville, NCA partial loss of engine power due to fatigue fracture of the power turbine governor spring, causing a false pneumatic signal to the fuel control and a corresponding reduction in fuel flow.NTSB DEN07LA083Accident · Minor injuriesLimited investigationFinal reportBeech 35 · Topeka, KSThe use of unapproved bolts to mount the crankshaft and gear together, causing fatigue and failure of those mounting bolts, resulting in the subsequent loss of engine power. Factors contributing to the accident were the separation of the crankshaft gear, and…NTSB ENG07IA018Incident · No injuriesIncident investigationFinal reportLearjet · Palm Springs, CAThe fatigue fracture of the fan blade due to the blade vendor's improper setup of the forging dies, which resulted in fan blades with airfoils that were below the minimum thickness in the highest stressed area of the airfoil and resulted in operating stresses…NTSB ANC07LA026Accident · No injuriesLimited investigationFinal reportCessna 175 · Bunnell, FLThe loss of engine power during cruise due to the separation of an engine piston, which resulted in a forced landing in a swamp and a collision with trees.NTSB ATL07LA063Accident · No injuriesLimited investigationFinal reportRandy Stanley Rotoway Exc 162F · Foley, ALLoss of engine power due to failure of the No. 4 engine exhaust valve.NTSB MIA07IA067Incident · No injuriesIncident investigationFinal reportCessna 172S · Moore Haven, FLA loss of engine power due to foreign object damage to the oil pump.NTSB LAX07LA114Accident · No injuriesLimited investigationFinal reportMooney M20B · St. George, UTOil contamination of the right magneto. Factors were the airplane owner's failure to comply with manufacturer's service bulletins and overhaul porcedures.NTSB NYC07LA068Accident · Serious injuriesLimited investigationFinal reportPiper PA-28-140 · Saluda, VAThe improper repair of the carburetor heat control linkage by person(s) unknown. Contributing to the accident was the pilot's improper decision to takeoff, with the engine developing partial power.NTSB ANC07LA016Accident · No injuriesLimited investigationFinal reportDouglas C54G-DC · Nenana, AKThe failure of an engine cylinder during cruise flight, which resulted in an in-flight fire, and subsequent emergency gear-up landing on snow-covered tundra. A factor in the accident was the failure of the fire suppression equipment to extinguish the fire.NTSB MIA07CA033Accident · Minor injuriesData collectionFinal reportRyan Aeronautical ST3KR · Lake Butler, FLa partial loss of engine power due to a disconnected throttle control push-rod, which resulted in a forced landing and collision with trees and the ground.NTSB MIA07LA032Accident · Minor injuriesLimited investigationFinal reportClopton Aero Aerocomp Compair 7SL · Merritt Island, FLThe airplane manufacturer's inadequate maintenance prior to final aircraft delivery, which resulted in fuel filter blockage and engine fuel starvation.NTSB DFW07CA037Accident · No injuriesData collectionFinal reportHughes 269B · Houma, LAA partial loss of engine power as a result of a cracked engine cylinder and broken spark plug which resulted in a hard landing. A factor was that it was not possible to attain proper rotor RPM.NTSB LAX07LA040Accident · No injuriesLimited investigationFinal reportStinson 108-1 · San Jose, CAPartial loss of engine power due to a seized exhaust valve during cruise flight. Rough terrain at the forced landing site was a contributing factor.NTSB LAX07FA035Accident · 3 fatalField investigationFinal reportCessna 421B · Big Bear Lake, CAFailure of the turbine wheel shaft in the left turbocharger during the takeoff initial climb for undetermined reasons, and the pilot's failure to attain and maintain safe single engine airspeed that led to a loss of control.NTSB DEN07CA019Accident · No injuriesData collectionFinal reportLuscombe 8F · Wellsville, KSA loss of engine power due to the ingestion of the number 2 intake valve into its cylinder. Contributing factors included the pilot allowing the airspeed and altitude to drop, making a safe landing not possible.NTSB NYC07CA016Accident · No injuriesData collectionFinal reportJahns RV-7 · Farmingdale, NJA loss of engine power due to a disconnected throttle/power lever linkage. A contributingfactor was the owner/builder's improper installation of the throttle linkage.NTSB LAX07LA022Accident · Serious injuriesLimited investigationFinal reportFish Vans RV-6 · Turlock, CAa partial loss of engine power due to the broken piston rings in the no. 4 cylinder. Also causal was the pilot's failure to maintain adequate airspeed while maneuvering for a forced landing, which resulted in a stall/mush.NTSB DFW06CA217Accident · No injuriesData collectionFinal reportBrantly Helicopter B-2B · Carrizo Springs, TXThe loss of engine power due to a malfunction of the electric fuel pump. A contributing factor was the lack of suitable terrain for the forced landing.NTSB NYC06LA219Accident · Minor injuriesLimited investigationFinal reportBeech F33A · South Windsor, CTA loosening of the fuel injector lines from the fuel manifold valve, which resulted in a partial loss of engine power.NTSB DFW06LA195Accident · 1 fatalLimited investigationFinal reportCessna A188B · Sumrall, MSThe pilot's failure to maintain airspeed which resulted in an inadvertent stall. Contributing factors were the partial loss of engine power and the low altitude.NTSB NYC06LA179Accident · 1 fatalLimited investigationFinal reportCessna 172N · Pompton Lakes, NJImproper maintenance of the throttle shaft, which resulted in a partial loss of engine power during cruise flight, and subsequent impact with trees during a forced landing.NTSB LAX06LA230Accident · Minor injuriesLimited investigationFinal reportCessna 152 · Pacoima, CAa loss of engine power due to the failure of maintenance personnel to tighten the top spark plugs, and install the leads for the ignition harness to the top spark plugs.NTSB NYC06CA181Accident · Serious injuriesData collectionFinal reportCarlson Sparrow · New Galilee, PAThe pilot's failure to maintain airspeed, which resulted in an inadvertent stall and impact with terrain. A factor in the accident was the partial loss of engine power for undetermined reasons.