# NTSB investigations, OR: 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. ## Latest cases - [NTSB LAX08LA025](https://openairdocs.org/ntsb/LAX08LA025.md): Interplane XJ · Independence, OR · Accident · Serious injuries · Limited investigation · Final report · Nov 2, 2007 · N232PM · Substantial damage > A 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 terrain - [NTSB SEA06CA107](https://openairdocs.org/ntsb/SEA06CA107.md): Taplin Avid Flyer · Grants Pass, OR · Accident · No injuries · Data collection · Final report · May 28, 2006 · N537MF · Substantial damage > The partial loss of engine power for undertermined reasons, resulting in a forced landing and substantial damage to the airplane. A contributing factor was the transmission wire. - [NTSB SEA05FA105](https://openairdocs.org/ntsb/SEA05FA105.md): Mitsubishi MU-2B-25 · Hillsboro, OR · Accident · 4 fatal · Field investigation · Final report · May 25, 2005 · N312MA · Substantial damage > The pilot's failure to obtain minimum controllable airspeed during the takeoff climb, which resulted in a loss of aircraft control when the left engine lost partial power. A fatigue failure to an oil tube, which resulted in the partial power loss to the left… - [NTSB SEA04LA139](https://openairdocs.org/ntsb/SEA04LA139.md): Grumman G-164A · Nyssa, OR · Accident · Minor injuries · Limited investigation · Final report · Jul 23, 2004 · N7220 · Substantial damage > The failure (fracture) of the number four cylinder head during an aerial application run. Factors include the soft crop-covered terrain. - [NTSB SEA03LA176](https://openairdocs.org/ntsb/SEA03LA176.md): Mooney M20D · Hood River, OR · Accident · Minor injuries · Limited investigation · Final report · Aug 24, 2003 · N6619U · Substantial damage > A power loss due to a mis-seated intake valve on the #1 cylinder resulting in leakage during the compression stroke and low compression. Contributing factors were the rising terrain and trees. - [NTSB SEA03LA125](https://openairdocs.org/ntsb/SEA03LA125.md): Sikorsky UH-19D · La Grande, OR · Accident · No injuries · Limited investigation · Final report · Jul 4, 2003 · N37799 · Destroyed > The cross threading and separation of the clutch assembly while maneuvering which resulted in a loss of engine power followed by a hard landing. An inadequate maintenance overhaul was a factor. - [NTSB SEA02FA097](https://openairdocs.org/ntsb/SEA02FA097.md): Lewis Nieuport 11 · Independence, OR · Accident · No injuries · Field investigation · Final report · Jun 9, 2002 · N132DC · Substantial damage > The partial loss of engine power in maneuvering flight due to the rotation of the ignition distributor as a result of a failure to tighten the distributor positioning clamp after the last engine timing adjustment. Factors include an inadequate maintenance… - [NTSB SEA99FA113](https://openairdocs.org/ntsb/SEA99FA113.md): Alexander VAN'S RV-8 · Lafayette, OR · Accident · 1 fatal · Field investigation · Final report · Jul 10, 1999 · N41VA · Destroyed > Fatigue of the number two connecting rod end resulting in a fracture at the rod end and release from the crankshaft, an ensuing in-flight fuel fed fire, followed by the pilot's abandoning the aircraft in flight. A contributing factor was pressure on the pilot… - [NTSB SEA98GA159](https://openairdocs.org/ntsb/SEA98GA159.md): Bell 212 · Juntura, OR · Accident · No injuries · Final report · Aug 8, 1998 · N291B · Substantial damage > The pilot-in-command's failure to maintain proper clearance between the long line cable and hell hole structure resulting in airframe contact and binding of the cable. This resulted in separation/disabling of the fuel control solenoid and a subsequent… - [NTSB SEA98LA103](https://openairdocs.org/ntsb/SEA98LA103.md): Casa BU-131 · Harrisburg, OR · Accident · No injuries · Limited investigation · Final report · Jun 17, 1998 · N1XW · Substantial damage > A failed bracket attaching the throttle linkage, which resulted in the inability to control power, and unsuitable terrain for a successful forced landing. Factors include soft terrain with high vegetation. - [NTSB SEA98LA046](https://openairdocs.org/ntsb/SEA98LA046.md): Cessna 152 · Mcminnville, OR · Accident · Minor injuries · Limited investigation · Final report · Mar 14, 1998 · N757CZ · Substantial damage > Disconnection of the throttle cable at the throttle-to-carburetor adapter plate and the failure of the student pilot to shut the aircraft's engine down once a safe landing was assured. Factors contributing to the accident were the soft terrain and overloading… - [NTSB SEA96LA144](https://openairdocs.org/ntsb/SEA96LA144.md): Hughes 369D · Mcminnville, OR · Accident · Minor injuries · Limited investigation · Final report · Jul 6, 1996 · N5110Y · Substantial damage > improper maintenance (replacement) and inspection of the engine fuel governor by company maintenance personnel, the pilot's inadequate preflight inspection, and a subsequent disconnect of the adjustable governor lever control rod, which disabled the engine… - [NTSB SEA96LA020](https://openairdocs.org/ntsb/SEA96LA020.md): Snow S2C · Dufer, OR · Accident · No injuries · Limited investigation · Final report · Nov 16, 1995 · N1694S · Substantial damage > A loss of engine power due to a cracked cylinder head. A factor was the evasive maneuver to avoid a ditch. - [NTSB SEA95LA118](https://openairdocs.org/ntsb/SEA95LA118.md): Enstrom 280C · The Dalles, OR · Accident · No injuries · Limited investigation · Final report · Jun 14, 1995 · N51657 · Substantial damage > A partial loss of engine power due to one set of ignition points becoming loose during flight. Factors included the low altitude flight and maneuvering required to conduct the operation and the resulting lack of suitable terrain for a forced landing. - [NTSB SEA94LA138](https://openairdocs.org/ntsb/SEA94LA138.md): Siai-Marchetti SF.260B · Prospect, OR · Accident · No injuries · Limited investigation · Final report · Jun 6, 1994 · N943TA · Substantial damage > The fracture of a connecting rod. Factors include no suitable forced landing site, and a fence and irrigation system in the field where the forced landing took place. - [NTSB SEA93LA180](https://openairdocs.org/ntsb/SEA93LA180.md): Beech C23 · Lakeview, OR · Accident · No injuries · Limited investigation · Final report · Aug 21, 1993 · N6547R · Substantial damage > A fractured exhaust valve. The rough terrain was a factor. - [NTSB SEA92LA006](https://openairdocs.org/ntsb/SEA92LA006.md): Cessna C-150M · Woodburn, OR · Accident · Minor injuries · Limited investigation · Final report · Oct 14, 1991 · N9263U · Substantial damage > A seized engine exhaust valve. Factors include rough terrain and a collapsed nose gear. - [NTSB SEA91LA231](https://openairdocs.org/ntsb/SEA91LA231.md): Cessna 310F · Corvallis, OR · Accident · No injuries · Limited investigation · Final report · Sep 2, 1991 · N6788X · Substantial damage > A disconnected air induction line, and the pilot's inflight decision to execute a 180 degree turn back to the airport. His lack of experience in multi-engine aircraft, his overall lack of familiarity and lack of recent experience in the type aircraft were… - [NTSB SEA91LA067](https://openairdocs.org/ntsb/SEA91LA067.md): Clyde L. King Osprey II · Aurora, OR · Accident · No injuries · Limited investigation · Final report · Mar 16, 1991 · N69CK · Substantial damage > A loss of engine power due to fuel starvation because of an inadequate component and inadequate fuel system design. - [NTSB SEA90FA197](https://openairdocs.org/ntsb/SEA90FA197.md): Piper PA-24-260 · Bend, OR · Accident · 2 fatal · Field investigation · Final report · Sep 28, 1990 · N8646P · Destroyed > An 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 SEA90LA044](https://openairdocs.org/ntsb/SEA90LA044.md): Ransome Pitts Special S-1C · Troutdale, OR · Accident · Serious injuries · Limited investigation · Final report · Feb 24, 1990 · N3T · Destroyed > Inadequate maintenance which resulted in a loss of engine power during the initial climb shortly after takeoff. - [NTSB SEA89LA049](https://openairdocs.org/ntsb/SEA89LA049.md): Piper PA28-140 · Beaver Marsh, OR · Accident · No injuries · Limited investigation · Final report · Feb 15, 1989 · N95286 · Substantial damage > An loss of engine power due to a failed exhaust valve. Contributing to the accident was the snow covered terrain on which a precautionary landing was made. - [NTSB SEA88LA191](https://openairdocs.org/ntsb/SEA88LA191.md): Piper PA-28 · Troutdale, OR · Accident · Serious injuries · Limited investigation · Final report · Oct 1, 1988 · N9550W · Substantial damage > The plt rprtd that soon after takeoff, he realized there was insufficient power. Subsequently, the acft mushed into trees & a raspberry field & was damaged. An exam of the eng revealed a piece of the carburetor heat muff had broken off & was ingested into the… - [NTSB SEA88LA147](https://openairdocs.org/ntsb/SEA88LA147.md): Bell 206B · Enterprise, OR · Accident · No injuries · Limited investigation · Final report · Aug 6, 1988 · N300TW · Substantial damage > While in cruise flt at abt 500 ft AGL, the plt stated he heard a 'ping' sound from the eng and pwr decreased to flt idle. An autorotation was attempted into a cleared upsloping area but the plt had to pull 'up' collective in order to clear a fence. A hard… - [NTSB SEA87LA125](https://openairdocs.org/ntsb/SEA87LA125.md): Piper PA-32R-300 · Bend, OR · Accident · Serious injuries · Limited investigation · Final report · Jun 28, 1987 · N8713E · Destroyed > Shortly after takeoff a partial loss of power occurred and the pilot was not able to maintain altitude and airspeed. The pilot was not able to retract the gear due to the low airspeed because the automatic gear extension system was not in the override… - [NTSB SEA86LA105](https://openairdocs.org/ntsb/SEA86LA105.md): Bell 47G3B1 · Albany, OR · Accident · No injuries · Limited investigation · Final report · Apr 15, 1986 · N9417A · Substantial damage > The plt reported that after aprx 15 minutes of flt, the eng sputtered 2 or 3 times. An autorotation was performed onto rough terrain during which the tail rotor drive shaft was damaged by the main rotor blades. Post accident inspection revealed a hole in the… - [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 SEA84LA197](https://openairdocs.org/ntsb/SEA84LA197.md): Aeronca 7AC · Prineville, OR · Accident · No injuries · Limited investigation · Final report · Aug 9, 1984 · N83233 · Substantial damage > While maneuvering plt heard a loud chatter coming from the engine accompanied by a loss of power. Plt reduced remaining power and initiated a forced landing in a rough barley field. Post accident investigation revealed the crankshaft broke near the number two… - [NTSB SEA84LA192](https://openairdocs.org/ntsb/SEA84LA192.md): Grumman AA-5 · Klamath Falls, OR · Accident · No injuries · Limited investigation · Final report · Jul 31, 1984 · N6542L · Substantial damage > The pilot stated that the run-up and takeoff were normal but during the climbout the engine lost power. A small fire, confined to the engine compartment erupted. Power could not be restored and an emergency landing was accomplished in an open field.… - [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 SEA83LA156](https://openairdocs.org/ntsb/SEA83LA156.md): Finamore KR-2 · Hillsboro, OR · Accident · Minor injuries · Limited investigation · Final report · Jul 22, 1983 · N3382F · Substantial damage > The acft lost power at about 100 ft AGL during takeoff. The pilot made a forced landing straight ahead into a grain field. The high vegetation caused enough drag on the landing gear to nose the acft over. Examination of the engine revealed that the high… - [NTSB SEA82FYM10](https://openairdocs.org/ntsb/SEA82FYM10.md): Weatherly 201C · Wasco, OR · Accident · No injuries · Final report · Feb 24, 1982 · N9243W · Substantial damage > The pilot reported that during takeoff, the engine did not maintain full power. While landing in a residential area, the aircraft struck a telephone wire and three trees. An examination of the engine revealed no obvious defects that would cause a loss of… ## 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."eventStateOrRegion" = 'OR' AND c."eventCountry" = 'USA' 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 ``` This list as a web page: https://openairdocs.org/ntsb?occurrence=352&state=OR --- 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.