NTSB investigations, 1990
74 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 year(c.\"eventDate\") = 1990
AND 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 year(c."eventDate") = 1990 AND 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 FTW91FA025Accident · 1 fatalField investigationFinal reportPiper PA28-181 · Olla, LAThe collapsed carburetor float and restricted movement of the fuel metering needle. Factors were the darknight, the unsuitable terrain, and the operator's maintenance personnel failure to inspect (repair) the engine.NTSB DEN91LA025Accident · No injuriesLimited investigationFinal reportGrumman AA1B · Roswell, NMLow cylinder compression and fouled spark plug.NTSB MIA91LA043Accident · No injuriesLimited investigationFinal reportPiper PA-28-151 · Jupiter, FLPartial loss of engine power due to failure of an exhaust valve, due to a valve guide that was worn beyond specifications.NTSB LAX91FA052Accident · Minor injuriesField investigationFinal reportde Havilland DHC-6-100 · Perris Valley, CAA loss of power on the left engine due to a fatigue failure of a compressor turbine blade leading to further compressor blade damage; a worn power turbine governor throttle cam assembly which led to loss of power on the right engine; and inadequate…NTSB NYC91LA044Accident · No injuriesLimited investigationFinal reportPiper PA-28-161 · Atlantic City, NJThe failure of the pilot to abort the takeoff in sufficient time to prevent an overrun. Factors related to the accident were a partial power loss due to a faulty ignition system.NTSB LAX91LA033Accident · Minor injuriesLimited investigationFinal reportMooney M20E · Tuba City, AZFailure of the piston rings which reduced the available engine power, and the pilot's continued operation of his airplane with a known engine deficiency during the relatively high density altitude conditions.NTSB NYC91DNE01Accident · No injuriesFinal reportCraig A. Gordon Teenie TWO · Oxford, CTThe failure of the pilot to maintain airspeed which resulted in an inadvertent stall and hard landing. Factors related to the accident were: the power loss and improper maintenance on the engine.NTSB LAX91DUJ03Accident · No injuriesFinal reportAir Tractor AT-302 · Somerton, AZThe failure of the number 3 exhaust valve which led to an engine failure and subsequent crash landing.NTSB MIA91FA020Accident · 2 fatalField investigationFinal reportAero Commander 680V · Fort Lauderdale, FLThe pilot-in-command's decision to continue takeoff with a known deficiency in the airplane - low power on both engines which resulted from open compressor surge valves. The pilot subsequently failed to maintain airspeed while maneuvering in a turn resulting…NTSB MIA91FA017Accident · 1 fatalField investigationFinal reportCessna 150G · Marathon, FLThe pilot-in-command's failure to maintain airspeed, while attempting to make a forced landing following a partial loss of engine power. Fatigue failure of the center rocker boss on the #3 cylinder was a related factor.NTSB MIA91LA010Accident · No injuriesLimited investigationFinal reportAmerican AA-5 · Cape Coral, FLA partial loss of engine power, caused by mechanical failure of the number 3 cylinder engine exhaust valve, for an undetermined reason.NTSB NYC91FA006Accident · 2 fatalField investigationFinal reportCessna 152 · Griswold, CTA broken ehaust valve spring that resulted in a partial loss of power. Factors related to the accident were: darkness, lack of suitable terrain, and failure of the occupants to use their shoulder harnesses.NTSB MIA91FA008Accident · Serious injuriesField investigationFinal reportMooney M20C · Kissimmee, FLMalfunction of both magnetos due to deterioration of the coils, failure of maintenance personnel to comply with an airworthiness directive, and failure of the pilot to maintain adequate visual lookout while on an approach for an emergency landing. Factors…NTSB FTW91FA002Accident · 1 fatalField investigationFinal reportEnstrom F28-C · Mesquite, TXInstallation error of company maintenance personnel. Factors were the unsuitable terrain, the tailwind, the inability of the pilot to maintain main rotor RPM, and the inadequate annual inspection by company maintenance personnel.NTSB NYC91LA003Accident · No injuriesLimited investigationFinal reportCessna A150M · Lincoln, RIOn ground collision with a tree while making a forced landing following loss of engine power due to a failed exhaust valve.NTSB MIA91LA006Accident · No injuriesLimited investigationFinal reportCessna 150M · Tampa, FLThe pilot's decision to fly an airplane with known deficiencies. This resulted in a partial loss of engine power, and a ground collision with a fixed object.NTSB SEA90FA197Accident · 2 fatalField investigationFinal reportPiper PA-24-260 · Bend, ORAn engine power loss due to fuel starvation as a result of a broken seal in the fuel injector servo. In addition, the pilot misjudged his approach into an open field.NTSB NYC90LA228Accident · Minor injuriesLimited investigationFinal reportPiper PA-12 · Franconia, NHThe landing of the airplane in unsuitable terrain, due to the mechanical failure of the engine center muffler baffle, which blocked the exhaust flow, resulting in a loss of power.NTSB ATL90LA174Accident · Minor injuriesLimited investigationFinal reportPiper PA-28-151 · Palmetto, GAThe number two cylinder exhaust valve sticking in the closed position, which resulted in a partial power loss during the takeoff. A factor in the accident was the pilot's improper preflight inspection, in that he did not correctly analyze the engine problem…NTSB CHI90LA267Accident · No injuriesLimited investigationFinal reportCessna 182 · Troy, MIA loss of engine power due to failure of the rocker arm bosses on the #2 cylinder.NTSB MIA90LA182Accident · No injuriesLimited investigationFinal reportHiller OH-23C · Fort Pierce, FLLoss of engine power due to separation of the packing seal which seals the distribution zone pipe to the inlet manifold, for undetermined reasons resulting in a hard landing.NTSB FTW90FA177Accident · Serious injuriesField investigationFinal reportPiper PA-32RT-300T · Addison, TXFatigue failure of the throttle cable. Factors related to the accident were: darkness and objects (fence and utility poles) in the emergency landing area.NTSB LAX90FA311Accident · 1 fatalField investigationFinal reportCessna 411 · Fallon, NVFailure of the pilot to perform emergency procedures for loss of engine power (including his failure to feather the propeller of the affected engine). Factors related to the accident were: inadequate maintenance, contamination in the fuel system, and overheat…NTSB FTW90DPG13Accident · No injuriesFinal reportGrumman G-164A · Luxora, ARA partial power loss due to failure of the number five connecting rod. A factor was the soft terrain in which the forced landing was made.NTSB LAX90DVD03Accident · No injuriesFinal reportTexas Helicopter M47A Wasp · Stockton, CAThe pilot misjudged the altitude during the flare/touchdown phase of the autorotation. Factors relating to this accident are failure of the right magneto.NTSB ATL90LA161Accident · Minor injuriesLimited investigationFinal reportCessna 172 · Palmetto, GAThe pilot's operation of the airplane with known mechanical deficiencies. A factor in the accident was the improperly maintained condition of the magnetos.NTSB FTW90MA161Accident · 3 fatalMajor investigationFinal reportGrumman G-159 · Houston, TXPartial failure of the left engine fuel pump, which resulted in a partial loss of power in the left engine, but not enough of a power loss to trigger and/or complete the autofeathering operation of the left propeller, thus allowing insufficient time for the…NTSB CHI90FA233Accident · No injuriesField investigationFinal reportPiper PA-23-160 · Odell, ILA loss of left engine power due to oil accumulation in the right magneto and a non-usable spark lead from the left magneto. In addition, the right engine was unable to provide adequate power to maintain altitude due to a partial blockage in the carburetor by…NTSB ATL90LA159Accident · No injuriesLimited investigationFinal reportCessna 172 · Ridge Spring, SCThe failure of the maintenance facility/owner to follow standard preventive maintenance procedures. A factor was the pilot's failure to extend the flaps during the forced landing.NTSB LAX90DVD01Accident · Serious injuriesFinal reportConvair L-13A · Hayward, CAAbsence of a oil system fitting cap.NTSB ATL90LA155Accident · No injuriesLimited investigationFinal reportCessna 172L · Greensboro, ALThe pilot's failure to maintain proper airspeed and attain the proper touchdown point during the emergency landing.NTSB CHI90DEV08Accident · Minor injuriesFinal reportHilvety Cwii · Moweaqua, ILThe pilot's failure to maintain flying speed and stalling the airplane while attempting to reverse course for a forced landing. Contributing to the accident was the pilot's failure to properly reinstall spark plug cables during servicing conducted prior to…NTSB ATL90LA151Accident · Minor injuriesLimited investigationFinal reportCessna 172B · Midway, TNTotal failure of the number four exhaust valve, resulting in engine power loss and the subsequent forced landing of the airplane.NTSB FTW90DPG06Accident · No injuriesFinal reportWSK PZL Mielec M18A · Hunter, ARLoss of part of the engine exhaust collector, as result of improper maintenance replacement/installation.NTSB ATL90DKJ07Accident · Serious injuriesFinal reportBell-Continental Copters 47G · Clayhatchee, ALFailure of the engine magneto(s). The lack of suitable terrain (trees) in the emergency landing area was a related factor.NTSB LAX90LA263Accident · Minor injuriesLimited investigationFinal reportPiper PA-28-140 · Clarksburg, CAThe failure of the airplane's muffler during initial climb.NTSB LAX90LA259Accident · No injuriesLimited investigationFinal reportCessna 421C · Lancaster, CAThe accident was eroded ignition spark plug electrodes and maintenance personnel neglecting to adjust spark plug electrodes and maintenance personnel neglecting to adjust spark plug gap. The rough terrain in which the aircraft landed was a factor in the…NTSB DEN90LA164Accident · No injuriesLimited investigationFinal reportMooney M20F · Torrington, WYA partial loss of power due to a failed exhaust valve. A factor was the lack of suitable terrain for the forced landing.NTSB CHI90DEP07Accident · No injuriesFinal reportBell 47-G2 · Hatley, WIThe partial loss of power due to sticking intake valves.NTSB LAX90LA241Accident · No injuriesLimited investigationFinal reportCessna 152 · Fullerton, CAThe warped condition of the engine valves and valve seats due to excessive and repeated thermal shock cycles.NTSB ANC90LA103Accident · Minor injuriesLimited investigationFinal reportDe Havilland DHC-3 · Beaver Village, AKMechanical failure of an exhaust rocker arm.NTSB LAX90DUA01Accident · Minor injuriesFinal reportHomebuilt JP-350-1 · Torrance, CAThe aircraft collision with the ground after the pilot experienced a loss of engine thrust due to propeller overspeed condition. Contributing to the accident was the pilot's improper servicing of the propeller hub that allowed the overspeed to occur.NTSB MKC90LA139Accident · Minor injuriesLimited investigationFinal reportGrumman G-164A · Swifton, ARFailure of the engine driven blower assembly. A factor was the lack of suitable terrain for the forced landing.NTSB LAX90LA231Accident · No injuriesLimited investigationFinal reportCessna 152 · Fillmore, CAThe inadvertent engagement of the starter during flight for undetermined reasons. >NTSB FTW90FA125Accident · 2 fatalField investigationFinal reportBellanca 17-30A · Dallas, TXThe initial partial loss of engine power, followed by the total loss of engine power and the striking of a hidden set of transmission wires.NTSB CHI90LA155Accident · No injuriesLimited investigationFinal reportCessna 150 · Flint, MIA loose fuel line caused by improper installation by maintenance personnel.NTSB MKC90LA128Accident · No injuriesLimited investigationFinal reportAir Tractor AT-301 · Ulysses, KSFailure of the powerplant cylinder and stall/mush encountered by the pilot in command.NTSB CHI90DEP05Accident · No injuriesFinal reportCirrus Klappmeier Cirrus VF-30 · Baraboo, WIManufacturer's inadequate equipment design to prevent a fuel leak which resulted in an in-flight fire. A factor related to the accident was the lack of an unsuitable forced landing area.NTSB MKC90LA126Accident · No injuriesLimited investigationFinal reportGrumman G-164A · Fisher, ARPartial loss of engine power for an undetermined reason.NTSB DEN90LA127Accident · No injuriesLimited investigationFinal reportAero Commander S2R · Sisseton, SDA total loss of power due to fuel starvation. Fuel starvation was caused by a missing fuel valve support clamp and a resultant cracked fuel line. Inadequate maintenance inspections and rough, uneven terrain were contributing factors.