# NTSB investigations: Loss of engine power(partial) - mech failure/malf NTSB aviation accident and incident investigations since 1962: the probable cause, findings, aircraft, crew, weather and docket of each, linked to the FAA registry and the FAA’s own reports. Page 25 of 29 · 1,408 cases ## Cases, newest first - [NTSB MKC84LA217](https://openairdocs.org/ntsb/MKC84LA217.md): Grumman G-164A · Osceola, AR · Accident · No injuries · Limited investigation · Final report · Jul 13, 1984 · N7928 · Substantial damage > The 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 MKC84LA213](https://openairdocs.org/ntsb/MKC84LA213.md): Grumman G-164A · Gillette, AR · Accident · No injuries · Limited investigation · Final report · Jul 12, 1984 · N9785 · Substantial damage > During 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 SEA84LA153](https://openairdocs.org/ntsb/SEA84LA153.md): Hughes 269C · Mt. St. Helens, WA · Accident · Minor injuries · Limited investigation · Final report · Jul 2, 1984 · N58397 · Destroyed > This 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 CHI84LA270](https://openairdocs.org/ntsb/CHI84LA270.md): Hughes 500C/369HS · Arena, WI · Accident · No injuries · Limited investigation · Final report · Jun 30, 1984 · N377ST · Substantial damage > During 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 MKC84LA190](https://openairdocs.org/ntsb/MKC84LA190.md): Piper PA-25-235 · Atwood, KS · Accident · No injuries · Limited investigation · Final report · Jun 29, 1984 · N6797Z · Substantial damage > During 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 DEN84LA201](https://openairdocs.org/ntsb/DEN84LA201.md): Cessna 177RG · Cheyenne, WY · Accident · No injuries · Limited investigation · Final report · Jun 29, 1984 · N33215 · Substantial damage > The 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 MKC84LA188](https://openairdocs.org/ntsb/MKC84LA188.md): Cessna 152 · Lee'S Summit, MO · Accident · No injuries · Limited investigation · Final report · Jun 28, 1984 · N25496 · Substantial damage > While 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 NYC84LA223](https://openairdocs.org/ntsb/NYC84LA223.md): Piper PA-28-140 · Marlboro, NJ · Accident · Minor injuries · Limited investigation · Final report · Jun 25, 1984 · N40921 · Substantial damage > On 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 FTW84FA287](https://openairdocs.org/ntsb/FTW84FA287.md): Bell 212 · Galveston, TX · Accident · Minor injuries · Field investigation · Final report · Jun 25, 1984 · N2180J · Substantial damage > During 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 FTW84LA282](https://openairdocs.org/ntsb/FTW84LA282.md): Bell 47G-5A · Houma, LA · Accident · Minor injuries · Limited investigation · Final report · Jun 21, 1984 · N14807 · Substantial damage > The 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 CHI84LA241](https://openairdocs.org/ntsb/CHI84LA241.md): Cessna 172G · Goodridge, MN · Accident · Minor injuries · Limited investigation · Final report · Jun 17, 1984 · N5883R · Substantial damage > The 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 SEA84LA130](https://openairdocs.org/ntsb/SEA84LA130.md): Ayres S2R-1820 · Pasco, WA · Accident · No injuries · Limited investigation · Final report · Jun 12, 1984 · N4025K · Substantial damage > The 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 MIA84LA179](https://openairdocs.org/ntsb/MIA84LA179.md): Bell 47G-5 · Jupiter, FL · Accident · No injuries · Limited investigation · Final report · Jun 7, 1984 · N1201W · Substantial damage > The 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 NYC84IA200](https://openairdocs.org/ntsb/NYC84IA200.md): Boeing 720-025 · Philadelphia, PA · Incident · No injuries · Incident investigation · Final report · Jun 5, 1984 · N8711E · No damage > While 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 FTW84LA247](https://openairdocs.org/ntsb/FTW84LA247.md): Germany Wetherell Sonerai I · Leander, TX · Accident · No injuries · Limited investigation · Final report · May 28, 1984 · N92CL · Substantial damage > Prior 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 CHI84LA210](https://openairdocs.org/ntsb/CHI84LA210.md): Wagner Cuby WAG-A-BOND · Lyons, WI · Accident · Minor injuries · Limited investigation · Final report · May 27, 1984 · N34WA · Substantial damage > The 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 FTW84LA253](https://openairdocs.org/ntsb/FTW84LA253.md): Grumman G-164A · Kinder, LA · Accident · No injuries · Limited investigation · Final report · May 26, 1984 · N9693 · Substantial damage > The 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 ATL84LA188](https://openairdocs.org/ntsb/ATL84LA188.md): Waco RNF · Danville, VA · Accident · Minor injuries · Limited investigation · Final report · May 25, 1984 · N11254 · Substantial damage > The 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 SEA84LA108](https://openairdocs.org/ntsb/SEA84LA108.md): Cessna 182P · Douglas Island, AK · Accident · No injuries · Limited investigation · Final report · May 15, 1984 · N13193 · Destroyed > The 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 LAX84LA291](https://openairdocs.org/ntsb/LAX84LA291.md): Taylorcraft F21 · Payson, AZ · Accident · No injuries · Limited investigation · Final report · May 13, 1984 · N2005U · Substantial damage > The 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 MKC84LA136](https://openairdocs.org/ntsb/MKC84LA136.md): Cessna A188B · Lepanto, AR · Accident · Minor injuries · Limited investigation · Final report · May 12, 1984 · N731VM · Substantial damage > The 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 MIA84FA165](https://openairdocs.org/ntsb/MIA84FA165.md): Consolidated Aeronautics Lake LA-4 · Fort Myers, FL · Accident · 1 fatal · Field investigation · Final report · May 11, 1984 · N1119L · Destroyed > The 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 MKC84LA134](https://openairdocs.org/ntsb/MKC84LA134.md): Beech BE23 · Richmond, KS · Accident · No injuries · Limited investigation · Final report · May 8, 1984 · N6112N · Substantial damage > While 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 FTW84LA212](https://openairdocs.org/ntsb/FTW84LA212.md): Cessna 150M · San Antonio, TX · Accident · No injuries · Limited investigation · Final report · Apr 25, 1984 · N45387 · Substantial damage > While 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 ATL84FMG02](https://openairdocs.org/ntsb/ATL84FMG02.md): Piper PA-28-150 · Apex, NC · Accident · No injuries · Final report · Apr 5, 1984 · N5839W · Substantial damage > According 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 FTW84LA185](https://openairdocs.org/ntsb/FTW84LA185.md): Grumman G-164A · Eunice, LA · Accident · No injuries · Limited investigation · Final report · Apr 4, 1984 · N9936 · Substantial damage > The 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 FTW84LA179](https://openairdocs.org/ntsb/FTW84LA179.md): Cessna U206G · Lake Charles, LA · Accident · Minor injuries · Limited investigation · Final report · Apr 1, 1984 · N7383N · Substantial damage > The 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 NYC84LA116](https://openairdocs.org/ntsb/NYC84LA116.md): Cessna 336 · Hogansburg, NY · Accident · No injuries · Limited investigation · Final report · Mar 24, 1984 · N1711Z · Substantial damage > The 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 LAX84LA229](https://openairdocs.org/ntsb/LAX84LA229.md): Republic RC-3 · Lakeport, CA · Accident · Minor injuries · Limited investigation · Final report · Mar 22, 1984 · N6470K · Substantial damage > The 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 FTW84LA172](https://openairdocs.org/ntsb/FTW84LA172.md): Robert Mcdonnell KR-2 · Kerrville, TX · Accident · Minor injuries · Limited investigation · Final report · Mar 21, 1984 · N125RM · Destroyed > According 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 MIA84LA113](https://openairdocs.org/ntsb/MIA84LA113.md): Cessna 172M · Clearwater, FL · Accident · No injuries · Limited investigation · Final report · Mar 16, 1984 · N1242U · Substantial damage > The 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 MIA84LA102](https://openairdocs.org/ntsb/MIA84LA102.md): Piper J-3 · Indian Beach, FL · Accident · No injuries · Limited investigation · Final report · Mar 10, 1984 · N88168 · Substantial damage > During 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 NYC84LA103](https://openairdocs.org/ntsb/NYC84LA103.md): Britten-Norman BN-2A-8 · Tobyhanna, PA · Accident · Serious injuries · Limited investigation · Final report · Mar 6, 1984 · N19WA · Substantial damage > The 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 FTW84LA159](https://openairdocs.org/ntsb/FTW84LA159.md): Piper PA-36 · Lamesa, TX · Accident · No injuries · Limited investigation · Final report · Mar 6, 1984 · N57584 · Substantial damage > Shortly 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 SEA84LA054](https://openairdocs.org/ntsb/SEA84LA054.md): Aerospatiale AS-341G · Alma, OR · Accident · No injuries · Limited investigation · Final report · Feb 17, 1984 · N633B · Substantial damage > The 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 MIA84LA083](https://openairdocs.org/ntsb/MIA84LA083.md): Piper PA-28R-201T · St. Augustine, FL · Accident · No injuries · Limited investigation · Final report · Feb 17, 1984 · N1642H · Substantial damage > The 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 ANC84IA035](https://openairdocs.org/ntsb/ANC84IA035.md): Bell 47G-2A · Anchorage, AK · Incident · No injuries · Incident investigation · Final report · Feb 15, 1984 · N8495E · Minor damage > The 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 LAX84LA163](https://openairdocs.org/ntsb/LAX84LA163.md): Hughes 500C (369HS) · San Diego, CA · Accident · Serious injuries · Limited investigation · Final report · Feb 5, 1984 · N8319F · Substantial damage > The 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 ATL84IA087](https://openairdocs.org/ntsb/ATL84IA087.md): British Aerospace 1-11 · Richmond, VA · Incident · No injuries · Incident investigation · Final report · Jan 26, 1984 · N1113J · No damage > Flt 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 LAX84LA162](https://openairdocs.org/ntsb/LAX84LA162.md): Beech K35 · Flagstaff, AZ · Accident · No injuries · Limited investigation · Final report · Jan 20, 1984 · N9510R · Substantial damage > Cruising 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 MKC84IA053](https://openairdocs.org/ntsb/MKC84IA053.md): Piper PA-28RT-201T · Trenton, NE · Incident · No injuries · Incident investigation · Final report · Dec 31, 1983 · N2082Y · Minor damage > During 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 ANC84FAG02](https://openairdocs.org/ntsb/ANC84FAG02.md): Cessna 170B · Mcgrath, AK · Accident · No injuries · Final report · Dec 26, 1983 · N2601D · Substantial damage > The 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 MIA84LA050](https://openairdocs.org/ntsb/MIA84LA050.md): Cessna 210 · Ft. Myers, FL · Accident · No injuries · Limited investigation · Final report · Dec 23, 1983 · N9510T · Destroyed > During 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 MKC84IA040](https://openairdocs.org/ntsb/MKC84IA040.md): Douglas DC-9-15 · Wichita, KS · Incident · No injuries · Incident investigation · Final report · Dec 18, 1983 · N968E · No damage > A 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 SEA84LA027](https://openairdocs.org/ntsb/SEA84LA027.md): Cessna 150F · Prosser, WA · Accident · No injuries · Limited investigation · Final report · Dec 17, 1983 · N6841F · Substantial damage > According 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 NYC84LA027](https://openairdocs.org/ntsb/NYC84LA027.md): Grumman AA-5A · Fitchburg, MA · Accident · Serious injuries · Limited investigation · Final report · Nov 13, 1983 · N26445 · Substantial damage > The 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 MIA84LA028](https://openairdocs.org/ntsb/MIA84LA028.md): Grumman American AA-5B · Okeechobee, FL · Accident · No injuries · Limited investigation · Final report · Nov 11, 1983 · N123EF · Substantial damage > The 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 SEA84LA019](https://openairdocs.org/ntsb/SEA84LA019.md): Morton B8M · Shelton, WA · Accident · No injuries · Limited investigation · Final report · Nov 9, 1983 · N37860 · Substantial damage > The 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 MIA84LA020](https://openairdocs.org/ntsb/MIA84LA020.md): Schweizer G-164B · Ormond Beach, FL · Accident · Minor injuries · Limited investigation · Final report · Oct 27, 1983 · N8459K · Destroyed > The 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 MKC84FA010](https://openairdocs.org/ntsb/MKC84FA010.md): Convair 340 · St. Louis, MO · Accident · No injuries · Field investigation · Final report · Oct 26, 1983 · N30DR · Substantial damage > While 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… Next page: https://openairdocs.org/ntsb.md?occurrence=352&page=26 ## The whole list in SQL Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS: ```sql 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 ``` This list as a web page: https://openairdocs.org/ntsb?occurrence=352&page=25 --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.