# 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 23 of 29 · 1,408 cases ## Cases, newest first - [NTSB LAX85LA351](https://openairdocs.org/ntsb/LAX85LA351.md): Cessna 172P · Saint Helena, CA · Accident · No injuries · Limited investigation · Final report · Aug 14, 1985 · N5259K · Substantial damage > During a local personal flt, the plt said the 'engine began to run rough a shake violently.' With not enough power to maintain altitude, the plt elected to make an emergency landing in a field, however, overran the field after touchdown and collided with… - [NTSB FTW85LA318](https://openairdocs.org/ntsb/FTW85LA318.md): Piper PA-28-140 · May, TX · Accident · No injuries · Limited investigation · Final report · Aug 13, 1985 · N9912W · Destroyed > The plt stated the eng RPM dropped to 1500 during level cruise flt at 4200 ft MSL. He could not regain pwr. He diverted the flt and attempted to reach the brownwood, TX, arpt but did not have sufficient alt. A forced landing was made in a rugged, heavily… - [NTSB DEN85LA218](https://openairdocs.org/ntsb/DEN85LA218.md): Downer Aircraft Industries REP. Seabee RC-3 · Haugan, MT · Accident · No injuries · Limited investigation · Final report · Aug 13, 1985 · N6305K · Substantial damage > The plt had reconditioned N6305K and was flying the acft to his home in Texas. He continued to state that while climbing through 6500 ft, he heard an unusual noise followed by a substantial loss in pwr. The plt executed an emergency landing on a forest… - [NTSB FTW85LA315](https://openairdocs.org/ntsb/FTW85LA315.md): Bell 206B · Damon, TX · Accident · Minor injuries · Limited investigation · Final report · Aug 9, 1985 · N22952 · Destroyed > The plt experienced an eng deceleration to flt idle while cruising 1000 MSL. He autorotated into trees in a heavily wooded area. A subsequent eng disassembly and examination revealed the pwr control line, p/n 6848471-B, was broken at its attaching 'b' nut… - [NTSB FTW85FA310](https://openairdocs.org/ntsb/FTW85FA310.md): Bell UH-1B · Saint James, LA · Accident · 1 fatal · Field investigation · Final report · Aug 8, 1985 · N1385W · Destroyed > Acft was at a 150' hover preparing to pick up a log when it experienced a power loss. Witnesses stated that they heard a loud 'bang' and the pilot radioed 'get out of the way'. Acft autorotated thru 60' to 80' trees with very low rotor RPM and impacted with… - [NTSB FTW85LA294](https://openairdocs.org/ntsb/FTW85LA294.md): North American AT-6 · Port Isabel, TX · Accident · No injuries · Limited investigation · Final report · Aug 3, 1985 · N4434N · Substantial damage > The acft was substantially damaged when it undershot the runway and cartwheeled during an emergency landing following an engine failure in the traffic pattern. The plt reported that initial examination of the engine revealed that initial examination of the… - [NTSB DEN85LA206](https://openairdocs.org/ntsb/DEN85LA206.md): Piper PA-22 · Boulder, CO · Accident · No injuries · Limited investigation · Final report · Jul 30, 1985 · N5430Z · Substantial damage > According to the plt, he was approaching the Boulder municipal arpt, Boulder, Colorado, for a VFR landing when his engine failed to develop sufficient power to sustain flight. A forced landing was made to a farmer's field. The acft sustained substantial… - [NTSB MKC85FA168](https://openairdocs.org/ntsb/MKC85FA168.md): Schubert Cassutt Sport · Admire, KS · Accident · 1 fatal · Field investigation · Final report · Jul 27, 1985 · N1115G · Destroyed > At 0847 CDT, July 27, 1985 N1115G radioed a nearby fss. The station that was called was closed but another fss heard thecall. During the transmission the plt reported that he had an eng problem, was pumping oil overboard and could not see outside because the… - [NTSB ATL85IA225](https://openairdocs.org/ntsb/ATL85IA225.md): Beech 95-B55 · Gilbertsville, KY · Incident · No injuries · Incident investigation · Final report · Jul 26, 1985 · UNK · Minor damage > The acft made a precautionary lndg after the plt feathered the left eng because of vibration. Post accident exam showed a failed cylinder in the eng - [NTSB MKC85LA166](https://openairdocs.org/ntsb/MKC85LA166.md): James Gress Quickie · Fenton, MO · Accident · Minor injuries · Limited investigation · Final report · Jul 24, 1985 · N32JG · Substantial damage > While taking off, the plt noted a partial loss of eng power during the initial climb. He was unable to maintain alt & tried to maneuver around trees near the departure end of the rwy. However, the acft descended into the tree tops, then crashed onto the roof… - [NTSB NYC85LA186](https://openairdocs.org/ntsb/NYC85LA186.md): Piper PA-18-95 · Stowe, VT · Accident · No injuries · Limited investigation · Final report · Jul 20, 1985 · N5777D · Substantial damage > During cruise flt, the plt heard a loud knocking coming from the eng and a decrease in oil pressure. During the landing in a fld, the landing gear collapsed and the acft ground looped. Examination of the eng disclosed that the hydraulic lifters of three of… - [NTSB ATL85LA214](https://openairdocs.org/ntsb/ATL85LA214.md): Wag-Aero Cubbie (J-3) · Stockbridge, GA · Accident · Minor injuries · Limited investigation · Final report · Jul 16, 1985 · N909GH · Substantial damage > During a departure, the eng had a partial loss of power. The plt reported that after climbing to about 75 ft, neither the acft's speed nor alt would increase. He lowered the nose to increase the eng RPM & speed, but the eng did not respond. Subsequently, the… - [NTSB NYC85LA177](https://openairdocs.org/ntsb/NYC85LA177.md): Sikorsky S-76A · Hartford, CT · Accident · No injuries · Limited investigation · Final report · Jul 14, 1985 · N3124L · Substantial damage > The apch to the pvt helipad was uneventful up to the last 100 ft where the plts noticed a high sink rate. The plt increased collective to correct for the situation. At about 20 ft from touchdown point the plt noticed a decrease in RPM and realized that they… - [NTSB CHI85LA297](https://openairdocs.org/ntsb/CHI85LA297.md): Piper PA-22 · Iola, WI · Accident · No injuries · Limited investigation · Final report · Jul 13, 1985 · N1487A · Substantial damage > Upon takeoff at approximately 100 ft AGL the pilot experienced a partial power loss which necessitated a forced landing in a soft, wet potato field. The pilot had time to switch fuel tanks and magnetos prior to touchdown, but the power loss remained constant.… - [NTSB NYC85LA169](https://openairdocs.org/ntsb/NYC85LA169.md): Piper PA-28-140 · Cherry Valley, NY · Accident · Minor injuries · Limited investigation · Final report · Jul 12, 1985 · N5602U · Substantial damage > Durng a climb to cruise, theengine RPM dropped to 2000. The pilot check the carburetor heat and other instruments and did not find any abnormalities. The engine RPM dropped a second time to 1800 a sound described by the pilot as a loud band was heard and the… - [NTSB CHI85LA289](https://openairdocs.org/ntsb/CHI85LA289.md): Bensen B8M · Hebron, OH · Accident · No injuries · Limited investigation · Final report · Jul 12, 1985 · N9729N · Destroyed > The gyrocopter lost partial pwr while in the traffic pattern and the plt executed an autorotation into a corn field. The throttle cable was found loose after the accident. - [NTSB ATL85LA208](https://openairdocs.org/ntsb/ATL85LA208.md): Cessna T303 · Shelby, NC · Accident · Minor injuries · Limited investigation · Final report · Jul 9, 1985 · N9718T · Destroyed > The plt stated that after takeoff from rwy 23, he noticed oil coming from the left eng. He initiated a turn to land on rwy 05 but was unable to line up with the rwy. He elected to go-around and when he added full power the left eng oil pressure went to zero… - [NTSB CHI85LA275](https://openairdocs.org/ntsb/CHI85LA275.md): Bell 47G-3B-1 · Donaldson, MN · Accident · No injuries · Limited investigation · Final report · Jul 6, 1985 · N7856S · Substantial damage > When the plt applied pwr to level off while entering a spray the eng did not produce sufficient pwr to stop the descent. He attempted a run on landing but the uneven terrain caused substantial damage to the helicopter. Inspection of the eng revealed the… - [NTSB LAX85LA305](https://openairdocs.org/ntsb/LAX85LA305.md): Hiller UH-12E · Gonzales, CA · Accident · No injuries · Limited investigation · Final report · Jul 5, 1985 · N161HA · Substantial damage > While cruising during an ag flight the acft's eng began losing pwr. At the time the acft was about 50 ft AGL & was travelling at 50 mph. The plt made a forced ldg onto a nearby plowed fld. Upon touchdown the rt skid dug into a furrow & the acft rolled over.… - [NTSB ATL85LA200](https://openairdocs.org/ntsb/ATL85LA200.md): American AA-1A · Hatteras, NC · Accident · Minor injuries · Limited investigation · Final report · Jun 30, 1985 · N6393L · Substantial damage > While on a flt to Hatteras, NC, the eng ran rough, so after landing, the plt got an auto mechanic to remove the spark plugs. The lower plugs on the left side were lead fowled & were cleaned with a wire brush. During takeoff on the next flt, the eng lost… - [NTSB MKC85LA141](https://openairdocs.org/ntsb/MKC85LA141.md): Cessna 150M · Rushville, MO · Accident · Minor injuries · Limited investigation · Final report · Jun 26, 1985 · N704ZS · Substantial damage > Shortly after the plt departed on a flt, the eng lost power while the acft was cruising at 1800 ft MSL over hilly terrain. The plt reported that the eng speed dropped to 800 RPM & he was unable to correct the situation. During a forced landing on soft… - [NTSB FTW85LA266](https://openairdocs.org/ntsb/FTW85LA266.md): I.C.A. Brasov IS-28B2 · Georgetown, TX · Accident · No injuries · Limited investigation · Final report · Jun 25, 1985 · N99169 · Destroyed > The accident occurred during an glider launch. The tow acft was unable to gain alt, and turned back to the arpt to release the glider. The tow acft began to sink into the trees and was forced to release the glider beyond safe gliding distance to the rwy. The… - [NTSB LAX85LA284](https://openairdocs.org/ntsb/LAX85LA284.md): Grumman G-164 · Glenn, CA · Accident · No injuries · Limited investigation · Final report · Jun 19, 1985 · N73646 · Substantial damage > During initial climb on an ag flight the plt reported experiencing a loss of eng power. From the acft's alt of 30 ft AGL the plt attempted an emergency landing but did not have sufficient alt to negotiate a turn back toward the road from which he had… - [NTSB DCA85AA023](https://openairdocs.org/ntsb/DCA85AA023.md): General Dynamics 240-27 · West Trenton, NJ · Accident · Serious injuries · Final report · Jun 19, 1985 · N155PA · Destroyed > The coplt bgn takeoff (tkof) with 2700 RPM & 52 to 53.5' of manifold pressure (mp). Wtr injection was not used altho 12 gal was available. At 150 to 250 ft AGL, the l eng lost pwr & the l prop autofeathered. The capt took control (ctl) & took action to verify… - [NTSB SEA85LA178](https://openairdocs.org/ntsb/SEA85LA178.md): Bell 47G-3B-1 · Idaho City, ID · Accident · No injuries · Limited investigation · Final report · Jun 11, 1985 · N1333X · Substantial damage > While the student plt was on a x-country flt, the eng lost power after the supercharger failed. The plt stated that he was unable to maintain altitude & RPM; he subsequently made a forced landing in a heavily timbered, mountainous area. - [NTSB MIA85LA189](https://openairdocs.org/ntsb/MIA85LA189.md): Lake LA-4-200 · Kissimmee, FL · Accident · No injuries · Limited investigation · Final report · Jun 11, 1985 · CGIBB · Substantial damage > The plt stated that just after takeoff, at about 800 ft alt the eng lost pwr. He then made an emerg landing in a fld and the acft struck a ditch during the landing roll. Post accident examination revealed both magneto cases were cracked and the #1 cly fuel… - [NTSB CHI85FEX02](https://openairdocs.org/ntsb/CHI85FEX02.md): Cessna 310C · Greenfield, IN · Accident · Serious injuries · Final report · Jun 9, 1985 · N1773H · Substantial damage > While en route, the l eng suddenly lost power & would not restart, so the plt feathered the l prop. After letting it cool aprx 5 min, he tried restarting it again, but still was unable. He stated he thought he then secured (feathered) the l eng. The plt… - [NTSB ATL85FA181](https://openairdocs.org/ntsb/ATL85FA181.md): Piper PA-32R-301T · Newnan, GA · Accident · Minor injuries · Field investigation · Final report · Jun 6, 1985 · N8215B · Substantial damage > The eng started running rough then quit. The plt landed in awarehouse parking lot between two rows of 40-45 foot trailers. Exam of the eng revealed that the sharp edges of the roll pin had worn through the centering spacer for the tach drive ass'y. which then… - [NTSB BFO85FA049](https://openairdocs.org/ntsb/BFO85FA049.md): Bell 222U · Milford, VA · Accident · No injuries · Field investigation · Final report · May 31, 1985 · N3180K · Substantial damage > The helo was in level cruise flt at 1500 ft and 115 KTS when the no. 2 eng chip light illuminated, accompanied by lowering oil pressure. The plt reduced pwr and started a rt turn to return to base when half way thru the turn a loud bang occurred followed by… - [NTSB MIA85LA177](https://openairdocs.org/ntsb/MIA85LA177.md): Piper PA-18 · St.Petersburg, FL · Accident · Minor injuries · Limited investigation · Final report · May 26, 1985 · N1211A · Substantial damage > The pilot was assigned an aircraft with a recently overhauled engine to tow a banner. He preflighted, started and ran-up the engine 3 times. Each time the engine ran rough and lost RPM on magneto checks. After each occurrence, companymaintenance personnel… - [NTSB NYC85FHJ03](https://openairdocs.org/ntsb/NYC85FHJ03.md): Piper PA-28-161 · Lewisboro, NY · Accident · Minor injuries · Final report · May 24, 1985 · N2172N · Substantial damage > The acft nosed over on a golf course after striking trees during a forced lndg. The acft had lost power during climb to cruise. Post acc exam showed a failed exhaust valve - [NTSB MKC85FA105](https://openairdocs.org/ntsb/MKC85FA105.md): Beech E-90 · Pine Bluff, AR · Accident · Minor injuries · Field investigation · Final report · May 19, 1985 · N575HC · Destroyed > A simulated eng failure was initiated by the chk airman at 200 AGL. The plt followed the emergency procedures and advanced the pwr levers to bring pwr back to the engine. The plt then noticed the eng failed and had insufficient alt to get an air restart. The… - [NTSB SEA85LA119](https://openairdocs.org/ntsb/SEA85LA119.md): Cessna 150M · Santa Rosa, CA · Accident · No injuries · Limited investigation · Final report · May 18, 1985 · N704UV · Substantial damage > While on a short local flight to a costal area and return. The engine lost some power. Carburetor heat was applied but no increase in power was noted. The plt then set up a glide with intentions of making a landing onto the beach area. At about 500 feet… - [NTSB LAX85FA251](https://openairdocs.org/ntsb/LAX85FA251.md): Beech A-36 · Hayward, CA · Accident · 1 fatal · Field investigation · Final report · May 10, 1985 · N2022B · Destroyed > According to the ATCT tapes, 3 mins elapsed between the time the acft called for taxi from parking to ready for takeoff at the active rwy. Just after liftoff the acft experienced a 'missing' & 'backfiring' engine as reported by witnesses. Plt radioed the… - [NTSB LAX85LA250](https://openairdocs.org/ntsb/LAX85LA250.md): Rockwell S-2R · Colusa, CA · Accident · No injuries · Limited investigation · Final report · May 9, 1985 · N8929Q · Substantial damage > During an ag flight, the eng began to severly backfire & lose power. The plt attempted to make a forced ldg on the nearby duster airstrip but had insufficient altitude to be properly aligned with the rwy. The acft overan the edge of the end disclosed that its… - [NTSB FTW85LA215](https://openairdocs.org/ntsb/FTW85LA215.md): Cessna 210E · Natchitoches, LA · Accident · Serious injuries · Limited investigation · Final report · May 8, 1985 · N2367F · Substantial damage > The pilot experienced partial power loss due to ingestion of the alternate air door shaft needle bearing rollers into the engine, and cross firing of the right magneto. He reportedly closed the throttle and made a gear up forced landing. The aircraft slid… - [NTSB FTW85LA194](https://openairdocs.org/ntsb/FTW85LA194.md): Piper PA-31-350 · Sallisaw, OK · Accident · No injuries · Limited investigation · Final report · Apr 22, 1985 · N3550N · Substantial damage > An annual inspn had just been completed (4/22/85) & each eng had about 1 hr of flt time. The plt stated that he took off & climbed to cruise at 9000 ft, then closed the cowl flaps & set the fuel settings for 75% power. While en route, he noted oil trailing… - [NTSB CHI85LA173](https://openairdocs.org/ntsb/CHI85LA173.md): Cessna 172M · Macedonia, OH · Accident · No injuries · Limited investigation · Final report · Apr 22, 1985 · N12124 · Substantial damage > While cruising at 2500 ft MSL, the eng developed a severe vibration accompanied by a partial pwr loss. The plt made a forced landing uphill on an inclined field. He initiated a sharp left turn to avoid a house. At that time, the nose gearcollapsed & the acft… - [NTSB CHI85LA172](https://openairdocs.org/ntsb/CHI85LA172.md): Ercoupe 415-CD · St. Paul, MN · Accident · No injuries · Limited investigation · Final report · Apr 21, 1985 · N94740 · Substantial damage > Shortly after takeoff, while climbing thru aprx 700 ft AGL, the eng developed a severe vibration & a loud 'clanking' sound. These were followed by a partial loss of power. During a subsequent forced landing, the acft's right wing hit a tree & the nose gear… - [NTSB ATL85LA144](https://openairdocs.org/ntsb/ATL85LA144.md): Bellanca 7AC · Germantown, KY · Accident · No injuries · Limited investigation · Final report · Apr 21, 1985 · N85652 · Substantial damage > During cruise flt over hilly terrain, the plt noted a power loss that he described as the eng 'dying back and then catching again.' He was unable to maintain alt & selected a field for a landing. During the apch, the left main gear & prop hit 2 power lines.… - [NTSB ATL85LA138](https://openairdocs.org/ntsb/ATL85LA138.md): Cessna 152 · Jacksonville, AL · Accident · No injuries · Limited investigation · Final report · Apr 19, 1985 · N5330B · Substantial damage > Pilot experienced power failure during climbout. A forced landing was made in a plowed fld and the acft nosed over. Examination of the wreckage revealed that the carburetor airbox seal had deteriorated and lodged in the throat of the carburetor. Last annual… - [NTSB FTW85FA188](https://openairdocs.org/ntsb/FTW85FA188.md): Bell UH-1B · Boutte, LA · Accident · Serious injuries · Field investigation · Final report · Apr 15, 1985 · N2252A · Destroyed > The plt had stabilized acft in a 125' hover, prior to picking up a load, when the eng spooled down and acft entered talltrees with low rotor RPM and pitched nose down as it descended thru the trees. Ground witnesses heard 2 loud 'bangs' prior to the acft… - [NTSB CHI85LA163](https://openairdocs.org/ntsb/CHI85LA163.md): Cessna 150L · East Liverpool, OH · Accident · No injuries · Limited investigation · Final report · Apr 13, 1985 · N15JT · Substantial damage > While on a night/solo x-country flt, the eng had a partial loss of power. The student attempted to make an emergency landing at a nearby arpt, but the rwy lights were not illuminated. At first, the student did not remember that the lights could be controlled… - [NTSB SEA85LA088](https://openairdocs.org/ntsb/SEA85LA088.md): Cessna 172M · Mulino, OR · Accident · No injuries · Limited investigation · Final report · Apr 8, 1985 · N80241 · Substantial damage > The plt pushed the throttle forward to add power during final approach and the engine ceased operating. A forced landing was made onto a cabbage patch and the nose gear sheared off. The acft then nosed over. Investigation revealed the throttle cable housing… - [NTSB SEA85LA076](https://openairdocs.org/ntsb/SEA85LA076.md): Weatherly 201B · Davenport, WA · Accident · No injuries · Limited investigation · Final report · Mar 15, 1985 · N1263W · Substantial damage > A vibration started in the engine and while the plt was monitoring the engine gauges he noted a loss of all oil pressure. A landing was made on a field and during rollout the left main gear was torn off when it struck a mound of dirt. The acft then struck… - [NTSB MKC85LA071](https://openairdocs.org/ntsb/MKC85LA071.md): Cessna 152 · Norwalk, IA · Accident · No injuries · Limited investigation · Final report · Mar 14, 1985 · N67399 · Substantial damage > Approaching des moines airport the plt rptd to approach control of eng problems and wanted to know what airport was close for an precautionary landing. An attempt was made to land at an airstrip 3 mi east of his present posn. Unable to land at the airstrip… - [NTSB FTW85LA134](https://openairdocs.org/ntsb/FTW85LA134.md): Cessna 177 · Houston, TX · Accident · Serious injuries · Limited investigation · Final report · Mar 3, 1985 · N29460 · Substantial damage > After the fourth touch-and-go landing on rwy 17R power was applied and a normal climb iniiated. At about 400 ft AGL power was reduced; the engine developed heavy vibrations and aprx 50% power loss. The CFI took control from the private plt receiving dual… - [NTSB LAX85FA159](https://openairdocs.org/ntsb/LAX85FA159.md): Mooney M-20-E · Oceanside, CA · Accident · 2 fatal · Field investigation · Final report · Feb 28, 1985 · N9325M · Destroyed > Gnd witnesses reported the acft engine began to misfire shortly after departing ry 24 at Oceanside muni arpt Oceanside, CA. When the acft reached the departure end of the ry at ab out 100 ft AGL, the plt began a left turn. Prior to completing the turn, the… - [NTSB CHI85LA110](https://openairdocs.org/ntsb/CHI85LA110.md): Brantly Helicopter B-2 · Huntingburg, IN · Accident · No injuries · Limited investigation · Final report · Feb 18, 1985 · N511R · Substantial damage > The acft experienced a partial power loss and made a hard autorotative lndg during a training flt. Investigation of the eng revealed mistiming of the left mag. The eng during tests also ran hot until the addition of a cooling shroud. The other significant… - [NTSB NYC85LA055](https://openairdocs.org/ntsb/NYC85LA055.md): Cessna 206G · Endicott, NY · Accident · No injuries · Limited investigation · Final report · Jan 20, 1985 · N9940Z · Substantial damage > The plt stated that the eng RPM dropped to idle when he made his second pwr reduction on downwind in preparation for landing. The throttle could not be pushed in when an attempt to add pwr was made. The acft touched down short of the rwy and came to rest aprx… Next page: https://openairdocs.org/ntsb.md?occurrence=352&page=24 ## 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=23 --- 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.