# NTSB investigations: Loss of engine power (partial)

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 21 of 38 · 1,858 cases

## Cases, newest first

- [NTSB CEN16LA015](https://openairdocs.org/ntsb/CEN16LA015.md): Bobby Martin Autogyro MTO Sport · Wallisville, TX · Accident · No injuries · Limited investigation · Final report · Oct 17, 2015 · N3232Z · Substantial damage
  > Fracture of the pusher propeller blade due to impact damage from an unknown object while in flight, which resulted in a severe vibration and a loss of thrust.
- [NTSB CEN16LA032](https://openairdocs.org/ntsb/CEN16LA032.md): Cessna 177RG · Red Oak, IA · Accident · No injuries · Limited investigation · Final report · Oct 8, 2015 · N1542H · Substantial damage
  > The improper torque of the engine’s No. 3 cylinder intake pipe bolts, which resulted in the separation of the pipe and a partial loss of engine power.
- [NTSB ENG16IA001](https://openairdocs.org/ntsb/ENG16IA001.md): Boeing 747 · Russian airspace, Japan · Incident · No injuries · Incident investigation · Final report · Oct 2, 2015 · N662US · Minor damage
  > The PW4056 engine experienced an in-flight loss of power because of damage to the low-pressure turbine (LPT) because of the inadequate overhaul inspection and repair instructions that existed at the time of the LPT module's last overhaul. A vane hook in the…
- [NTSB CEN15LA431](https://openairdocs.org/ntsb/CEN15LA431.md): Edward M Van Morlan Rans S-12 · Gardner, KS · Accident · Serious injuries · Limited investigation · Final report · Sep 28, 2015 · N98ES · Substantial damage
  > The pilot's inadequate airspeed control and the airplane’s exceedance of its critical angle-of-attack during the forced landing, which resulted in an aerodynamic stall. Contributing to the accident was the loss of engine power due to fuel starvation caused by…
- [NTSB ERA15LA373](https://openairdocs.org/ntsb/ERA15LA373.md): Vanek Jim Sport Copter Vortex · Lake Wales, FL · Accident · Minor injuries · Limited investigation · Final report · Sep 24, 2015 · N179V · Substantial damage
  > A loss of engine power due to a lean fuel/air mixture as a result of a disconnected fuel primer line.
- [NTSB WPR15LA266](https://openairdocs.org/ntsb/WPR15LA266.md): Piper PA 28 · Elko, NV · Accident · Serious injuries · Limited investigation · Final report · Sep 23, 2015 · N56897 · Substantial damage
  > The pilot's failure to sufficiently lean the engine’s fuel-to-air mixture for the given density altitude, which resulted in reduced engine power output and the airplane’s inability to climb.
- [NTSB WPR15LA262](https://openairdocs.org/ntsb/WPR15LA262.md): Graves Bryon S Vans RV-7A · Byron, CA · Accident · No injuries · Limited investigation · Final report · Sep 21, 2015 · N507RV · Substantial damage
  > Improper overhaul of the right magneto, which eliminated system redundancy, and resulted in a loss of engine power when the left magneto failed during aerobatic flight maneuvers.
- [NTSB CEN15LA418](https://openairdocs.org/ntsb/CEN15LA418.md): Cessna 421B · Platteville, WI · Accident · Minor injuries · Limited investigation · Final report · Sep 21, 2015 · N813CA · Substantial damage
  > The partial loss of right engine power for undetermined reasons with insufficient runway remaining for the aborted takeoff.
- [NTSB ERA15LA368](https://openairdocs.org/ntsb/ERA15LA368.md): Cessna 150M · Mount Airy, MD · Accident · No injuries · Limited investigation · Final report · Sep 19, 2015 · N714CW · Substantial damage
  > The in-flight fatigue failure of the No. 4 cylinder barrel, which resulted in a total loss of engine power.
- [NTSB WPR15LA261](https://openairdocs.org/ntsb/WPR15LA261.md): Schweizer 269C · Forest Grove, OR · Accident · Minor injuries · Limited investigation · Final report · Sep 18, 2015 · N290R · Substantial damage
  > A partial loss of engine power during cruise flight for reasons that could not be determined because postaccident examination of the airframe and engine did not reveal any anomalies that would have precluded normal operation.
- [NTSB CEN15LA414](https://openairdocs.org/ntsb/CEN15LA414.md): Cessna 172P · Nutwood, IL · Accident · Minor injuries · Limited investigation · Final report · Sep 16, 2015 · N65191 · Substantial damage
  > A partial loss of engine power due to the undetected loosening of the four carburetor bolts that connect the throttle body to the bowl assembly.
- [NTSB CEN15LA439](https://openairdocs.org/ntsb/CEN15LA439.md): Robinson Helicopter R44 II · Alice, TX · Accident · No injuries · Limited investigation · Final report · Sep 14, 2015 · N442CF · Substantial damage
  > A loss of engine power during a practice power recovery autorotation for reasons that could not be determined based on the available information.
- [NTSB ERA15LA354](https://openairdocs.org/ntsb/ERA15LA354.md): Cessna 177 · Moneta, VA · Accident · Serious injuries · Limited investigation · Final report · Sep 13, 2015 · N2835X · Substantial damage
  > The pilot's premature retraction of the wing flaps and his subsequent failure to maintain pitch control during an attempted go-around, which resulted in the airplane exceeding its critical angle-of-attack and an aerodynamic stall. Contributing to the accident…
- [NTSB ANC15LA070](https://openairdocs.org/ntsb/ANC15LA070.md): Helio H 295 · Delta Junction, AK · Accident · No injuries · Limited investigation · Final report · Sep 13, 2015 · N6464V · Substantial damage
  > A partial loss of engine power during takeoff for reasons that could not be determined because postaccident examination of the airframe and engine did not reveal any anomalies that would have precluded normal operation.
- [NTSB ERA15FA353](https://openairdocs.org/ntsb/ERA15FA353.md): Aero Vodochody L39 · Oneida, TN · Accident · 1 fatal · Field investigation · Final report · Sep 12, 2015 · N139RT · Destroyed
  > The pilot's failure to maintain airplane control following a partial loss of engine power during initial climb. The reason for the partial loss of engine power could not be determined due to extensive postimpact damage.
- [NTSB CEN15LA407](https://openairdocs.org/ntsb/CEN15LA407.md): Alon A2 · Laramie, WY · Accident · Serious injuries · Limited investigation · Final report · Sep 11, 2015 · N6359V · Substantial damage
  > The pilot’s failure to use carburetor heat in cruise flight while operating in an area conducive to serious carburetor icing, which resulted in a loss of engine power and an off-airport landing. Contributing to the accident was the pilot's decision to…
- [NTSB CEN15LA413](https://openairdocs.org/ntsb/CEN15LA413.md): Venus CP328 Super Emeraude · Port Wing, WI · Accident · Minor injuries · Limited investigation · Final report · Sep 5, 2015 · N328TV · Substantial damage
  > The pilot’s undershooting the landing area and the subsequent impact with a hay bale. Also causal to the accident was the operation of the airplane in conditions conducive to carburetor icing, which reduced the engine power during the landing.
- [NTSB CEN15LA404](https://openairdocs.org/ntsb/CEN15LA404.md): Cessna TR182 · Midland, TX · Accident · 1 fatal · Limited investigation · Final report · Sep 5, 2015 · N4707S · Substantial damage
  > The partial loss of engine power for reasons that could not be determined based on the available evidence.
- [NTSB WPR15FA256](https://openairdocs.org/ntsb/WPR15FA256.md): Piper PA28 · Santee, CA · Accident · 2 fatal · Field investigation · Final report · Sep 3, 2015 · N8441B · Substantial damage
  > The pilots' failure to maintain airplane control following a partial loss of engine power after takeoff, which resulted in an aerodynamic stall. Contributing to the accident was the partial loss of engine power due to a failure of the right magneto.
- [NTSB WPR15LA254](https://openairdocs.org/ntsb/WPR15LA254.md): Raudenbush Ernie Lancair Super ES · Winkelman, AZ · Accident · Minor injuries · Limited investigation · Final report · Sep 1, 2015 · N74ES · Destroyed
  > A partial loss of engine power for reasons that could not be determined because postaccident examination of the engine revealed no anomalies.
- [NTSB ERA15LA332](https://openairdocs.org/ntsb/ERA15LA332.md): Lancair IV · Fort Lauderdale, FL · Accident · Serious injuries · Limited investigation · Final report · Aug 30, 2015 · N864KM · Destroyed
  > The mechanic's improper installation of the turbocharger assembly, which resulted in oil starvation and a subsequent total loss of the engine power.
- [NTSB ERA15LA334](https://openairdocs.org/ntsb/ERA15LA334.md): Beech B19 · Dexter, ME · Accident · Serious injuries · Limited investigation · Final report · Aug 29, 2015 · N2013G · Substantial damage
  > The flight instructor’s inadequate preflight planning, which resulted in collision with trees and terrain during takeoff.
- [NTSB WPR15LA251](https://openairdocs.org/ntsb/WPR15LA251.md): Dova DV-1 · San Carlos, CA · Accident · No injuries · Limited investigation · Final report · Aug 28, 2015 · N919E · Substantial damage
  > A partial loss of engine power due to fuel vapor lock. Contributing to the accident was the absence of a fuel return line.
- [NTSB CEN15LA387](https://openairdocs.org/ntsb/CEN15LA387.md): Robinson R44 II · Cheyenne, WY · Accident · Serious injuries · Limited investigation · Final report · Aug 28, 2015 · N440SA · Substantial damage
  > The pilot's improper preflight performance planning, which resulted in a hard landing due to low rotor rpm while operating near maximum gross weight in high density altitude conditions.
- [NTSB CEN15LA389](https://openairdocs.org/ntsb/CEN15LA389.md): Air Tractor AT 502B · Monroe, NE · Accident · Minor injuries · Limited investigation · Final report · Aug 27, 2015 · N61267 · Substantial damage
  > Loss of propeller thrust for reasons that could not be determined, since examination of the airplane's engine, propeller, and associated accessories revealed no anomalies.
- [NTSB CEN15LA382](https://openairdocs.org/ntsb/CEN15LA382.md): Piper PA 22-160 · Tyler, MN · Accident · Serious injuries · Limited investigation · Final report · Aug 25, 2015 · N2805Z · Substantial damage
  > The student pilot's failure to adequately ensure the carburetor was clear of ice before takeoff, which resulted in a partial loss of engine power during takeoff due to carburetor icing.
- [NTSB CEN15LA383](https://openairdocs.org/ntsb/CEN15LA383.md): Piper PA 25-235 · Harvey, ND · Accident · No injuries · Limited investigation · Final report · Aug 21, 2015 · N4652Y · Substantial damage
  > The partial loss of engine power due to a failed magneto and two cylinders with low compression. Contributing to the accident was the pilot/owner’s decision to operate the airplane with an ongoing engine issue.
- [NTSB WPR15LA248](https://openairdocs.org/ntsb/WPR15LA248.md): Sikorsky S 61A · Ironside, OR · Accident · Minor injuries · Limited investigation · Final report · Aug 20, 2015 · N1043T · Substantial damage
  > A loss of power to the No. 2 engine due to the failure of the accessory gearbox drivetrain. Also causal was the pilot’s inability to release the external longline due to the use of a safety wire across the coupling of the quick-disconnect mechanism, which…
- [NTSB ERA15LA318](https://openairdocs.org/ntsb/ERA15LA318.md): Cessna 172K · Chiefland, FL · Accident · No injuries · Limited investigation · Final report · Aug 17, 2015 · N84308 · Substantial damage
  > The partial loss of engine power during cruise flight for reasons that could not be determined because a postaccident airframe and engine examination and engine test run revealed no evidence of mechanical malfunctions or failures.
- [NTSB ERA15LA311](https://openairdocs.org/ntsb/ERA15LA311.md): Thomas A Siminski Zenith CH 750 · Allentown, PA · Accident · Serious injuries · Limited investigation · Final report · Aug 14, 2015 · N1750Z · Substantial damage
  > A partial loss of engine power due to the No. 1 spark plug being liberated from the cylinder head due to the stripped threads in the cylinder head. Contributing to the accident was the pilot’s decision to attempt to return to the airport while at a low…
- [NTSB ERA15FA308](https://openairdocs.org/ntsb/ERA15FA308.md): Beech N35 · Weirsdale, FL · Accident · 2 fatal · Field investigation · Final report · Aug 12, 2015 · N390Z · Destroyed
  > A partial loss of engine power during takeoff. The reason for the partial loss of power could not be determined due to the extensive fire and impact damage to the engine.
- [NTSB CEN15LA377](https://openairdocs.org/ntsb/CEN15LA377.md): Grumman G 164B · Sac City, IA · Accident · No injuries · Limited investigation · Final report · Aug 12, 2015 · N311AL · Substantial damage
  > The loss of engine power for reasons that could not be determined based on the available information.
- [NTSB ERA15LA306](https://openairdocs.org/ntsb/ERA15LA306.md): Wright Daniel J Volksplane VP-1 · Brooksville, FL · Accident · Serious injuries · Limited investigation · Final report · Aug 10, 2015 · N9288 · Destroyed
  > The pilot's failure to abort the takeoff after determining that the engine was not producing adequate power. Contributing to the accident was the engine's inability to produce adequate power for reasons that could not be determined due to extensive postimpact…
- [NTSB ERA15LA300](https://openairdocs.org/ntsb/ERA15LA300.md): Cessna 182 · Hot Springs, VA · Accident · Minor injuries · Limited investigation · Final report · Aug 8, 2015 · N7506S · Substantial damage
  > A partial loss of engine power during initial climb due to the failure of a magneto. Contributing to the accident was the pilot's decision to operate the airplane without a current annual inspection.
- [NTSB WPR15LA235](https://openairdocs.org/ntsb/WPR15LA235.md): Cleveland Allan B Nieuport 11# · Bellingham, WA · Accident · Minor injuries · Limited investigation · Final report · Aug 7, 2015 · N917AB · Substantial damage
  > A partial loss of engine power for reasons that could not be determined because postaccident examination revealed no mechanical malfunctions or anomalies that would have precluded normal operation.
- [NTSB WPR15FA236](https://openairdocs.org/ntsb/WPR15FA236.md): Cessna 182F · Montecito, CA · Accident · 2 fatal · Field investigation · Final report · Aug 7, 2015 · N5738F · Substantial damage
  > Oil starvation that led to the failure of the No. 5 connecting rod and a subsequent loss of engine power.
- [NTSB WPR15LA230](https://openairdocs.org/ntsb/WPR15LA230.md): Grumman G164 - B · Princeton, CA · Accident · No injuries · Limited investigation · Final report · Aug 4, 2015 · N48452 · Substantial damage
  > The loss of engine power during an agricultural application flight due to a cylinder failure.
- [NTSB ERA15LA293](https://openairdocs.org/ntsb/ERA15LA293.md): Beech C90B · Georgetown, KY · Accident · Serious injuries · Limited investigation · Final report · Aug 2, 2015 · N257CQ · Substantial damage
  > Undetermined based on the available evidence.
- [NTSB ERA15CA295](https://openairdocs.org/ntsb/ERA15CA295.md): Stol JA30 Superstol · West Union, SC · Accident · No injuries · Data collection · Final report · Aug 2, 2015 · N556TW · Substantial damage
  > A loss of engine power while maneuvering due to water contamination in the fuel.
- [NTSB ERA15LA291](https://openairdocs.org/ntsb/ERA15LA291.md): Sontonastaso Mosquito · Winchendon, MA · Accident · No injuries · Limited investigation · Final report · Jul 29, 2015 · N285XE · Substantial damage
  > A partial loss of engine power due to a faulty electrical wiring crimp in the engine’s ignition system.
- [NTSB CEN15LA326](https://openairdocs.org/ntsb/CEN15LA326.md): Eagle Eagle DW 1 · Hector, MN · Accident · No injuries · Limited investigation · Final report · Jul 29, 2015 · N8806B · Substantial damage
  > The intermittent partial loss of engine power, which resulted in a lower-than-expected approach glidepath and impact with terrain short of the runway. The reason for the intermittent partial loss of engine power could not be determined because postaccident…
- [NTSB WPR15LA223](https://openairdocs.org/ntsb/WPR15LA223.md): Stinson 108 - 3 · North Las Vegas, NV · Accident · No injuries · Limited investigation · Final report · Jul 25, 2015 · N6152M · Substantial damage
  > The partial loss of engine power due to a degraded cylinder exhaust valve seal, which resulted in low cylinder compression.
- [NTSB ERA15LA286](https://openairdocs.org/ntsb/ERA15LA286.md): Beech A36 · Poughkeepsie, NY · Accident · Minor injuries · Limited investigation · Final report · Jul 25, 2015 · N6677D · Substantial damage
  > A leaking fuel discharge fitting, which resulted in a partial loss of engine power and an off-airport, gear-up landing.
- [NTSB CEN15LA318](https://openairdocs.org/ntsb/CEN15LA318.md): Piper PA38 - 112 · Millbury, OH · Accident · 1 fatal · Limited investigation · Final report · Jul 25, 2015 · C-GTAO · Substantial damage
  > A loss of engine power due to three of the engine valve adjustment mechanisms backing out, which resulted from improper maintenance.
- [NTSB WPR15LA217](https://openairdocs.org/ntsb/WPR15LA217.md): Piper PA 28-181 · Las Vegas, NV · Accident · Serious injuries · Limited investigation · Final report · Jul 19, 2015 · N8740E · Destroyed
  > The engine's inability to produce full-rated power due to wear on internal engine components, which resulted in a loss of altitude and subsequent landing on uneven terrain. Contributing to the accident was the airplane owner's failure to maintain the engine…
- [NTSB ERA15LA276](https://openairdocs.org/ntsb/ERA15LA276.md): Grumman American Avn. AA1B · Lititz, PA · Accident · No injuries · Limited investigation · Final report · Jul 19, 2015 · N8969L · Substantial damage
  > A partial loss of engine power for reasons that could not be determined because postaccident examination of the engine found no mechanical malfunctions or failures that would have precluded normal operation.
- [NTSB GAA15CA143](https://openairdocs.org/ntsb/GAA15CA143.md): Aventura II · Fenton, MI · Accident · No injuries · Data collection · Final report · Jul 17, 2015 · N1204A · Substantial damage
  > The failure of the student pilot to ensure that the experimental seaplane was airworthy prior to take off.
- [NTSB CEN15LA298](https://openairdocs.org/ntsb/CEN15LA298.md): Cirrus Design SR22 · Houston, TX · Accident · Minor injuries · Limited investigation · Final report · Jul 7, 2015 · N422PB · Substantial damage
  > Maintenance personnel's improper installation of the propeller governor, which resulted in damage to the governor drive gear and its subsequent failure and a subsequent loss of engine power.
- [NTSB ANC15LA044](https://openairdocs.org/ntsb/ANC15LA044.md): Piper PA-18 · Wasilla, AK · Accident · No injuries · Limited investigation · Final report · Jul 3, 2015 · N9189D · Substantial damage
  > The partial loss of engine power after takeoff for reasons that could not be determined because postaccident examination of the airframe and engine did not reveal any anomalies that would have precluded normal operation.
- [NTSB CEN15LA294](https://openairdocs.org/ntsb/CEN15LA294.md): Boeing A75N1 (PT17) · Louisburg, KS · Accident · No injuries · Limited investigation · Final report · Jul 2, 2015 · N44SN · Substantial damage
  > A partial loss of engine power for reasons that could not be determined during postaccident examinations.

Next page: https://openairdocs.org/ntsb-events/342/sequence.md?page=22

## 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 s.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' s WHERE s."tier2Number" = '342' AND s.case_mkey IN (SELECT case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_events.parquet' WHERE "isDefiningEvent"))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb-events/342/sequence?page=21

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