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 MKC84LA217Accident · No injuriesLimited investigationFinal reportGrumman G-164A · Osceola, ARThe acft crashed into a levee in a rice field after losing engine power during a spray operation turn-around. The enginedid not quit entirely but lost enough power so that flt was not maintained. An inspection of the engine revealed a broked connecting rod.NTSB MKC84LA213Accident · No injuriesLimited investigationFinal reportGrumman G-164A · Gillette, ARDuring swath run engine ran rough and could not sustain acft in flight. The plt made a forced landing in a soft freshly plowed field. The acft nosed over during the landing. Inspection of the acft revealed that one magneto was missing teethfrom the drive gear…NTSB SEA84LA153Accident · Minor injuriesLimited investigationFinal reportHughes 269C · Mt. St. Helens, WAThis accident occurred at the 5500 ft level on Mt. St. Helens. Density alt at the time was 7500 ft. at aprx 40-50 ft aglengine and rotor RPM began to decay rapidly. The acft landed hard on a rock ledge with one skid partially off the ledge. As rotor RPM…NTSB CHI84LA270Accident · No injuriesLimited investigationFinal reportHughes 500C/369HS · Arena, WIDuring an agricultural spraying operation the helicopter eng lost pwr. The plt attempted an autorotation. The acft rolled over on landing. The plt stated that he observed a loss of eng & rotor RPM, necessatating the autorotation. Inspection of the eng…NTSB MKC84LA190Accident · No injuriesLimited investigationFinal reportPiper PA-25-235 · Atwood, KSDuring a swath run, the eng began losing power. The plt pulled up & looked for a place to land, then dumped his chemical load. Eng RPM continued decreasing so he elected to land in a field that was being summer fallowed. During the landing, the acft nosed…NTSB DEN84LA201Accident · No injuriesLimited investigationFinal reportCessna 177RG · Cheyenne, WYThe aircraft collided with a tree during an emergency landing following loss of throttle control at a low RPM. Examination revealed that an uncertified throttle cable had been installed, it failed at the attachment to the throttle body.NTSB MKC84LA188Accident · No injuriesLimited investigationFinal reportCessna 152 · Lee'S Summit, MOWhile taking off from a touch-&-go landing, the eng failed to develope full power. The instructor plt (CFI) pulled the throttle back to abort the takeoff, but the RPM would not reduce to idle. Subsequently, the acft continued aprx 500 ft past the end of the…NTSB NYC84LA223Accident · Minor injuriesLimited investigationFinal reportPiper PA-28-140 · Marlboro, NJOn initial climb after takeoff, plt noted a loss of climb performance, executed steep 180 degree turn to avoid high voltage lines on rising terrain ahead. This maneuver, coupled with reduced power resulted in an airspeed decrease to near stall speed. Plt…NTSB FTW84FA287Accident · Minor injuriesField investigationFinal reportBell 212 · Galveston, TXDuring takeoff, the helicopter lifted off in an 80% power check & the plt began a northerly departure. Before achieving translational lift, the rotor RPM dropped to aprx 85%. The torque meter indicated a split with the #1 eng indicating about 55% & the #2 eng…NTSB FTW84LA282Accident · Minor injuriesLimited investigationFinal reportBell 47G-5A · Houma, LAThe helicopter autorotated into trees and marsh land after a partial loss of power. The acft was on a pipeline patrol atlow alt at the time of the power loss. Examination of the engine after the accident revealed that the fuel control governor spring, p/n…NTSB CHI84LA241Accident · Minor injuriesLimited investigationFinal reportCessna 172G · Goodridge, MNThe acft was forced to land in a farm pasture after the engine lost power. Post accident examination of the acft revealed that the carburetor heat control was off. The right magneto was found to be very weak. A spark could only be produced at high RPM. The…NTSB SEA84LA130Accident · No injuriesLimited investigationFinal reportAyres S2R-1820 · Pasco, WAThe plt was applying herbicides to a corn field when a power loss to idle RPM occurred. During an emergency landing, the main gear sunk into soft sand & the acft nosed over. An exam revealed that the throttle bracket, p/n 19703-5001, had failed.NTSB MIA84LA179Accident · No injuriesLimited investigationFinal reportBell 47G-5 · Jupiter, FLThe acft crashed landed after a partial loss of power. During an exam of the eng, the compressor bleed control valve was found stuck open causing an improper fuel/air mixture.NTSB NYC84IA200Incident · No injuriesIncident investigationFinal reportBoeing 720-025 · Philadelphia, PAWhile climbing thru 600 ft after takeoff, the crew heard a loud bang, the acft shuttered & the #3 eng fire warning light illuminated. A fire bottle was discharged. The coplt saw flames coming from the eng & the fire warning light remained illuminated, so a…NTSB FTW84LA247Accident · No injuriesLimited investigationFinal reportGermany Wetherell Sonerai I · Leander, TXPrior to the flight the plt adjusted the carburetor. A local flight was made to test the carburator. During the gliding apch to the rwy the plt noticed the eng idle power was 1400 RPM. While on base leg the plt advanced the throttle, however, eng pwr remained…NTSB CHI84LA210Accident · Minor injuriesLimited investigationFinal reportWagner Cuby WAG-A-BOND · Lyons, WIThe plt noticed '...a little power loss...' After takeoff at about 550 AGL. He turned downwind & flew a normal traffic pattern, but at a lower altitude. The acft stalled during the base turn. The plt stated that the loss of power was due to the mixture…NTSB FTW84LA253Accident · No injuriesLimited investigationFinal reportGrumman G-164A · Kinder, LAThe plt reported after the accident that he was dispensing fertilizer and had just flown through a heavy rain shower when the engine began to lose power. A forced landing was made in a flooded rice field and the acft nosed over. The pilot stated that he was…NTSB ATL84LA188Accident · Minor injuriesLimited investigationFinal reportWaco RNF · Danville, VAThe pilot was en route to NJ when the eng began to run rough. He diverted to Danville, VA, and landed. During the subsequent takeoff the eng began to run rough, then quit at an alt of aprx 700 feet. The pilot turned the acft and over flew the departure rwy to…NTSB SEA84LA108Accident · No injuriesLimited investigationFinal reportCessna 182P · Douglas Island, AKThe plt reported a complete loss of power with oil visible on the left side of the windscreen. The plt was unable to glide to land and the acft was ditched in deep water about 100 yds from shore. The acft was not recovered.NTSB LAX84LA291Accident · No injuriesLimited investigationFinal reportTaylorcraft F21 · Payson, AZThe acft was landed 200 ft short of the rwy in bushes after the engine hesitated during the plts application of throttle in an attempt to reach the rwy. An FAA inspector found the magneto timing set to 23 plus degrees rather than the prescribed 20 degrees.NTSB MKC84LA136Accident · Minor injuriesLimited investigationFinal reportCessna A188B · Lepanto, ARThe acft lost power during an aerial application flt & crashed during a forced landing. An investigation revealed that the magnetos were not in an airworthy condition at the time of the accident. The acft had been operated 338 hrs since the last 100 hr…NTSB MIA84FA165Accident · 1 fatalField investigationFinal reportConsolidated Aeronautics Lake LA-4 · Fort Myers, FLThe eng was heard 'popping' & misfiring during the takeoff roll. About 1 min later while climbing thru 400-500 ft, the plt reported an eng failure & was cleared to land on any rwy. The acft entered a left turn, stalled & spun into a parking lot. An exam of…NTSB MKC84LA134Accident · No injuriesLimited investigationFinal reportBeech BE23 · Richmond, KSWhile in cruise on a ferry flight the engine lost power and would only develop partial power. The power degraded to the point that insuficient power was available to maintain flight. The pilot landed in a field and substantial damage occured. Post accident…NTSB FTW84LA212Accident · No injuriesLimited investigationFinal reportCessna 150M · San Antonio, TXWhile returning to arpt the pilot experienced a rough running eng with a drop in RPM. There was insufficient power to maintain flt and an emergency landing was made on a highway. The acft was damaged during the hard landing. An exam of the eng revealed that…NTSB ATL84FMG02Accident · No injuriesFinal reportPiper PA-28-150 · Apex, NCAccording to the plt, the eng lost power during takeoff. He was able to keep the eng running by pumping the throttle but was not able to gain altitude. He made a forced landing on an abandoned railroad bed. Investigation revealed that the resistoflex hose p/n…NTSB FTW84LA185Accident · No injuriesLimited investigationFinal reportGrumman G-164A · Eunice, LAThe plt reported that the engine lost power on takeoff and return to the rwy was not possible, so he landed on the edge of a pond. A post accident investigaiton revealed a crack in the #7 cyl head between the spark plug holes. The engine had just gotten a…NTSB FTW84LA179Accident · Minor injuriesLimited investigationFinal reportCessna U206G · Lake Charles, LAThe acft hit a tree and a ditch during a forced landing on a road after the engine lost power. Examination of the engineafter the accident revealed that the throttle rod had disconnected from the throttle control arm at the bolt hole. The hole had worn…NTSB NYC84LA116Accident · No injuriesLimited investigationFinal reportCessna 336 · Hogansburg, NYThe acft nosed down in a soggy muddy field during a forced landing. The plt reported a power loss on the rear eng and when attempts to restart were unsuccessful made the forced landing into a soggy muddy field.NTSB LAX84LA229Accident · Minor injuriesLimited investigationFinal reportRepublic RC-3 · Lakeport, CAThe plt reported that on his preflight he found the eng compression & oil level to be low but after servicing the oil to the proper level he departed & on initial climb, after reaching about 100 ft AGL, the eng started popping & losing RPM. The plt made a…NTSB FTW84LA172Accident · Minor injuriesLimited investigationFinal reportRobert Mcdonnell KR-2 · Kerrville, TXAccording to the plt/builder of the home built acft acceleration was not up to par during the takoff roll. Takeoff was continued and initial climb was poor. A downwind turn was initiated at about 100 ft AGL. During the turn the plt noticeda strip of tape on…NTSB MIA84LA113Accident · No injuriesLimited investigationFinal reportCessna 172M · Clearwater, FLThe aircrew were practicing touch & go landings when a loss of power occurred. Subsequently, the acft was damaged during an emergency landing in a field. An investigation revealed that the throttle linkage had become disconnected at the carburetor support…NTSB MIA84LA102Accident · No injuriesLimited investigationFinal reportPiper J-3 · Indian Beach, FLDuring a banner towing operation, the plt descended from 1200 ft to 500 to tow over water near a Beach. When he advanced the throttle to level off there was no response to throttle movement. The eng continued operating at about 1500 RPM. Subsequently, he…NTSB NYC84LA103Accident · Serious injuriesLimited investigationFinal reportBritten-Norman BN-2A-8 · Tobyhanna, PAThe acft made a precautionary landing on a highway after both engines lost oil pressure. The plt feathered the right propeller because it gave abnormal indications before the left engine. The left engine was still operating at touchdown post accident…NTSB FTW84LA159Accident · No injuriesLimited investigationFinal reportPiper PA-36 · Lamesa, TXShortly after takeoff for an aerial application flight a partial loss of power occurred. A hard forced landing was made in an open field which resulted in both main gears collapsing. Inspection of the engine revealed both magneto distributor blocks were…NTSB SEA84LA054Accident · No injuriesLimited investigationFinal reportAerospatiale AS-341G · Alma, ORThe plt stated he lost partial power on a x-country flt, during cruise, and initiated an autorotation. At about 200 to 300 ft AGL he reduced the throttle to idle. During flare the rotor RPM decayed and the acft landed hard and rolled over. The pilot stated…NTSB MIA84LA083Accident · No injuriesLimited investigationFinal reportPiper PA-28R-201T · St. Augustine, FLThe plt reported the eng lost partial power shortly after becoming airborne. He attempted to return to the field & land on rwy 24, but he missed the rwy & landed hard north of the rwy. Disassembly of the eng fuel pump revealed that the o-ring sealing the…NTSB ANC84IA035Incident · No injuriesIncident investigationFinal reportBell 47G-2A · Anchorage, AKThe acft tail rotor struck snow during an autorotative landing following an eng failure. The snow depth varied between 32 & 45 inches. Examination of the eng revealed that the rt hand mag was firing intermittently on two of the six distributor contacts which…NTSB LAX84LA163Accident · Serious injuriesLimited investigationFinal reportHughes 500C (369HS) · San Diego, CAThe plt reported a partial power loss. During the forced landing tahe right skid collapsed & the t/r severed the tail boom. During a subsequent eng test, the eng would produce no more than 20 PSI torque at 100% N2. The fuel control & fuel nozzle were found to…NTSB ATL84IA087Incident · No injuriesIncident investigationFinal reportBritish Aerospace 1-11 · Richmond, VAFlt 498, experienced a partial power loss on one eng during the final approach. Both plts stated that the eng spool down occurred moments after selecting tcc(top temp control). A eng runup of the acft failed to repeat the discrepancy & a precautionary change…NTSB LAX84LA162Accident · No injuriesLimited investigationFinal reportBeech K35 · Flagstaff, AZCruising at 10,500 ft the number 5 cylinder separated from the engine ass'y causing the loss of power. During the forced ldg roll the acft collided with a snow covered log collapsing the nose gear. The engine was overhauled in 1980. 1,239 hrs of operation had…NTSB MKC84IA053Incident · No injuriesIncident investigationFinal reportPiper PA-28RT-201T · Trenton, NEDuring a precautionary landing due to a partial power loss the acft nose gear failed after colliding with a snow bank. The no. 6 cylinder wall was found broken.NTSB ANC84FAG02Accident · No injuriesFinal reportCessna 170B · Mcgrath, AKThe plt reported that the eng had a partial loss of power & the application of carburetor heat did not improve the situation. He decided to land at the nearest arpt. According to the plt, the rwy was covered with aprx 2 ft of snow, and during the landing, the…NTSB MIA84LA050Accident · No injuriesLimited investigationFinal reportCessna 210 · Ft. Myers, FLDuring tkof roll abt halfway down the rwy the plt noticed the acft was not accelerating normally. Aft liftoff he atmptd to return to the arpt however was forced to ditch the acft in the caloosahatche river due to a loss of pwr. Exam of the eng revealed that…NTSB MKC84IA040Incident · No injuriesIncident investigationFinal reportDouglas DC-9-15 · Wichita, KSA catastrophic (uncontainted) failure of the left engine occurred at the beginning of the takeoff roll. The takeoff was aborted & fire erupted on the taxi back to the gate. Investigation revealed a broken turbine long shaft.NTSB SEA84LA027Accident · No injuriesLimited investigationFinal reportCessna 150F · Prosser, WAAccording to the pilot shortly after departure the engine began running rough for the second time. The pilot elected to make a precautionary landing on a gravel road he was familiar with. During the landing flare, with a gusty crosswind, directional control…NTSB NYC84LA027Accident · Serious injuriesLimited investigationFinal reportGrumman AA-5A · Fitchburg, MAThe aircraft's engine lost power on takeoff and the pilot elected to make an emergency landing in a residental area. The pilot maneuvered the aircraft between two homes and crashed into a tree. The aircraft rolled to the left and fell tothe ground.…NTSB MIA84LA028Accident · No injuriesLimited investigationFinal reportGrumman American AA-5B · Okeechobee, FLThe plt reported that during flt, the eng had a partial loss of power. He attempted to divert to an arpt. He was able to get on final apch, but when he saw he could not reach the runway, he turned away from the lights & a building for an emergency landing.…NTSB SEA84LA019Accident · No injuriesLimited investigationFinal reportMorton B8M · Shelton, WAThe acrt collided with fir trees, about 18 feet tall, during an off-arpt forced landing after a power loss. The plt suspected carburetor ice. He said the engine began to run rough and RPM dropped to about 1200/1500 RPM. When he was unable to clear the trees…NTSB MIA84LA020Accident · Minor injuriesLimited investigationFinal reportSchweizer G-164B · Ormond Beach, FLThe acft is a twin-engine conversion of the Grumman G-164B. The plt was on a local test flt with the hopper filled with water to simulate flt conditions near the operating gross weight of the acft. After lift-off a partial power loss was experienced on the #2…NTSB MKC84FA010Accident · No injuriesField investigationFinal reportConvair 340 · St. Louis, MOWhile in a climb after takeoff, the aircrew encountered an eng problem (which was reported as detonation) & requested clearance to return to the departure arpt. The flt was vectored for a right traffic pattern to rwy 24. The plt reported he was at 2000 ft MSL…