# NTSB investigations: Powerplant sys/comp malf/fail

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 4 of 17 · 821 cases

## Cases, newest first

- [NTSB CEN24LA036](https://openairdocs.org/ntsb/CEN24LA036.md): Textron 172S · Erie, CO · Accident · No injuries · Class 3 · Limited · Final report · Nov 9, 2023 · N1817E · Substantial damage
  > A partial loss of engine power while maneuvering at a low altitude due to a stuck exhaust valve.
- [NTSB ENG24WA008](https://openairdocs.org/ntsb/ENG24WA008.md): Airbus A321 · Islamabad, Pakistan · Incident · No injuries · Class 3 · Foreign · Oct 30, 2023 · AP-BOD · No damage
- [NTSB CEN24LA027](https://openairdocs.org/ntsb/CEN24LA027.md): Robinson Helicopter R44 · Rowlett, TX · Accident · Minor injuries · Class 3 · Limited · Final report · Oct 26, 2023 · N141CD · Substantial damage
  > A malfunction of the helicopter’s Engine Monitoring Unit (EMU)/Governor Controller for undetermined reasons. Contributing to the accident was the flight instructor’s failure to turn off the EMU/Governor Controller per the emergency checklist when the…
- [NTSB ERA24LA016](https://openairdocs.org/ntsb/ERA24LA016.md): Cessna 172L · Richmond, VA · Accident · No injuries · Class 3 · Limited · Final report · Oct 21, 2023 · N7716G · Substantial damage
  > The loss of engine power due to a restriction of fuel flow as a result of a fractured float bracket in the carburetor.
- [NTSB ENG24FA003](https://openairdocs.org/ntsb/ENG24FA003.md): Boeing 767-300F · Memphis, TN · Incident · No injuries · Class 3 · Field · Final report · Oct 18, 2023 · N287FE · Minor damage
  > A high-pressure fuel leak from a gap in the bolted flange interface between the main fuel pump’s fuel crossover supply tube and the hydromechanical unit idler adapter pad, which resulted in the crossover tube flange bolts partially pulling out and allowing…
- [NTSB CEN24LA012](https://openairdocs.org/ntsb/CEN24LA012.md): Tvap 4 · Franksville, WI · Accident · No injuries · Class 3 · Limited · Final report · Oct 15, 2023 · N42VZ · Substantial damage
  > The improper installation of the supplemental ignition system, which resulted in a total loss of engine power.
- [NTSB CEN24LA011](https://openairdocs.org/ntsb/CEN24LA011.md): Cirrus SR22 · Red Oak, IA · Accident · No injuries · Class 3 · Limited · Final report · Oct 15, 2023 · N6JA · Substantial damage
  > The fatigue failure of the exhaust valve due to excessive combustion deposits, which resulted in a partial loss of engine power. Contributing to the accident was the pilot’s failure to ensure that the required scheduled maintenance was completed.
- [NTSB WPR23LA352](https://openairdocs.org/ntsb/WPR23LA352.md): Wayne Toddun Sling 4 TSI · San Pedro, CA · Accident · Serious injuries · Class 3 · Limited · Final report · Sep 25, 2023 · N135WT · Substantial damage
  > A total loss of engine power due to a failure of the No. 4 cylinder exhaust valve from overheating and excessive wear.
- [NTSB ENG24WA002](https://openairdocs.org/ntsb/ENG24WA002.md): Boeing 737 · Rio de Janeiro, Brazil · Incident · Class 5 · Foreign · Sep 2, 2023 · PR-GUM · Minor damage
- [NTSB DCA23WA458](https://openairdocs.org/ntsb/DCA23WA458.md): Boeing 767-332 · Prague, Czechia · Incident · No injuries · Class 3 · Foreign · Sep 1, 2023 · N175DN · No damage
- [NTSB ENG23WA035](https://openairdocs.org/ntsb/ENG23WA035.md): Airbus A321 · Jeddah, Saudi Arabia · Occurrence · Class 5 · Foreign · Aug 22, 2023 · VT-IUD · No damage
- [NTSB CEN23LA370](https://openairdocs.org/ntsb/CEN23LA370.md): Piper PA31 · Durant, OK · Accident · No injuries · Class 3 · Limited · Final report · Aug 21, 2023 · N3589X · Substantial damage
  > The loosening of a connecting rod cap nut for reasons that could not be determined, which resulted in a mechanical failure of the engine and an in-flight fire.
- [NTSB CEN23LA327](https://openairdocs.org/ntsb/CEN23LA327.md): Vans RV10 · Chouteau, OK · Accident · Minor injuries · Class 3 · Limited · Final report · Jul 21, 2023 · N730WL · Substantial damage
  > The total loss of engine power as a result of a failed positive crankcase ventilation (PCV) valve and a subsequent impact with terrain.
- [NTSB ERA23LA293](https://openairdocs.org/ntsb/ERA23LA293.md): Hughes 369D · Waldorf, MD · Accident · Minor injuries · Class 3 · Limited · Final report · Jul 9, 2023 · N5027P · Substantial damage
  > Fatigue failure of the overrunning clutch outer race and a subsequent inflight loss of power due to abnormal bending loads as a result of improper reassembly of the clutch subassembly following maintenance and the presence of microcracks on the clutch’s outer…
- [NTSB ERA23LA286](https://openairdocs.org/ntsb/ERA23LA286.md): Grumman American Avn. AA5A · Redstone Arsenal, AL · Accident · No injuries · Class 3 · Limited · Final report · Jul 4, 2023 · N26387 · Substantial damage
  > The separation of the clamp assembly securing the throttle control cable outer housing, which resulted in the pilot’s inability to control the throttle.
- [NTSB GAA23WA214](https://openairdocs.org/ntsb/GAA23WA214.md): Bell 206B · Thetford Mines, Canada · Accident · No injuries · Class 5 · Foreign · Jun 23, 2023 · N717LM · Substantial damage
- [NTSB CEN23LA250](https://openairdocs.org/ntsb/CEN23LA250.md): Champion 7EC · Waunakee, WI · Accident · Minor injuries · Class 3 · Limited · Final report · Jun 21, 2023 · N80461 · Substantial damage
  > A total loss of engine power during the initial takeoff climb due to a worn manual fuel primer pump locking mechanism, which resulted in an unlocked primer and an overly rich fuel mixture.
- [NTSB CEN23LA246](https://openairdocs.org/ntsb/CEN23LA246.md): Piper PA46 · College Station, TX · Accident · No injuries · Class 3 · Limited · Final report · Jun 18, 2023 · N463HP · Substantial damage
  > The mechanic’s failure to properly secure the oil suction screen plug during recent maintenance, which resulted in an oil leak and subsequent loss of engine power due to oil starvation.
- [NTSB ENG23LA030](https://openairdocs.org/ntsb/ENG23LA030.md): Gulfstream Aerospace G-IV · Sioux City, IA · Incident · No injuries · Class 3 · Limited · Final report · Jun 17, 2023 · N926TT · Minor damage
  > A No. 2 (right) engine failure due to a spinner fairing separation and subsequent impact with the fan blades that resulted in a midspan fracture of one fan blade. The spinner fairing separated as a result of a fatigue crack that originated from the heat…
- [NTSB WPR23LA218](https://openairdocs.org/ntsb/WPR23LA218.md): Cessna A188B · Chillicothe, MO · Accident · Minor injuries · Class 3 · Limited · Final report · Jun 7, 2023 · N731UF · Destroyed
  > A partial loss of engine power due to a tear in the fuel manifold diaphragm, which prevented sufficient fuel flow to the engine.
- [NTSB GAA23WA164](https://openairdocs.org/ntsb/GAA23WA164.md): Piper PA-24-250 · Guadalajara, Mexico · Accident · Class 5 · Foreign · Jun 6, 2023 · XB-GOO
- [NTSB CEN23LA231](https://openairdocs.org/ntsb/CEN23LA231.md): Cessna 207 · Harlingen, TX · Accident · No injuries · Class 3 · Limited · Final report · Jun 6, 2023 · N91157 · Substantial damage
  > The improper installation of the throttle control arm to the throttle control cable attachment end, which resulted in a failure of the control arm and a loss of engine power in flight.
- [NTSB WPR23LA215](https://openairdocs.org/ntsb/WPR23LA215.md): Piper J3C-65 · Belfair, WA · Accident · Serious injuries · Class 3 · Limited · Final report · Jun 4, 2023 · N77583 · Substantial damage
  > The total loss of engine power due to the fatigue failure of the crankshaft accessory drive gear.
- [NTSB DCA23WA306](https://openairdocs.org/ntsb/DCA23WA306.md): Boeing 737 · Merida, Mexico · Incident · No injuries · Class 5 · Foreign · Jun 1, 2023 · XA-PPP · No damage
- [NTSB GAA23WA154](https://openairdocs.org/ntsb/GAA23WA154.md): Cirrus Design SR22 · Norman's Cay, Bahamas · Accident · No injuries · Class 5 · Foreign · May 26, 2023 · N522AR · Substantial damage
- [NTSB WPR23LA199](https://openairdocs.org/ntsb/WPR23LA199.md): Cessna 172S · Casa Grande, AZ · Accident · No injuries · Class 3 · Limited · Final report · May 24, 2023 · N60372 · Substantial damage
  > An in-flight separation of the throttle linkage, which resulted in a loss of throttle control. Contributing to the accident was maintenance personnel’s failure to follow the maintenance manual inspection procedure for the throttle cable assembly.
- [NTSB ERA23FA238](https://openairdocs.org/ntsb/ERA23FA238.md): Beech V35 · Rougemont, NC · Accident · 1 fatal · Class 3 · Field · Final report · May 21, 2023 · N272S · Destroyed
  > A total loss of engine power due to oil starvation. The source of the oil starvation could not be determined.
- [NTSB WPR23LA197](https://openairdocs.org/ntsb/WPR23LA197.md): Cessna 210 · Redding, CA · Accident · Minor injuries · Class 3 · Limited · Final report · May 20, 2023 · N9433T · Substantial damage
  > A fuel leak caused by an age-degraded fuel pressure sender hose, which resulted in fuel starvation and a loss of engine power. Contributing to the accident was inadequate maintenance.
- [NTSB GAA23WA162](https://openairdocs.org/ntsb/GAA23WA162.md): Piper PA18 · Oldenburg, Germany · Accident · Class 5 · Foreign · May 18, 2023 · D-EJIM · Destroyed
- [NTSB CEN23LA188](https://openairdocs.org/ntsb/CEN23LA188.md): Cessna 172 · Flower Mound, TX · Accident · No injuries · Class 3 · Limited · Final report · May 17, 2023 · N5550J · Substantial damage
  > The fatigue failure of the rocker arm which resulted in a partial loss of engine power. Contributing was the airplane operator’s failure to inspect the rocker arm in accordance with the engine manufacturer’s service bulletin.
- [NTSB ERA23LA231](https://openairdocs.org/ntsb/ERA23LA231.md): Charles D Walker Walker Curtiss JN4D · Greenville, KY · Accident · No injuries · Class 3 · Limited · Final report · May 15, 2023 · N8262 · Substantial damage
  > The separation of an electrical wire that powered the ignition module, rendering the ignition system inoperative, and resulting in the total loss of engine power.
- [NTSB CEN23LA218](https://openairdocs.org/ntsb/CEN23LA218.md): Piper J3C · Romeoville, IL · Incident · No injuries · Class 3 · Limited · Final report · Apr 27, 2023 · N6384H · Minor damage
  > The inflight failure of the propeller blade due to fatigue cracking from corrosion pits, initiating at the midpoint of the cambered face.
- [NTSB CEN23LA165](https://openairdocs.org/ntsb/CEN23LA165.md): Pipistrel Lsa Sinus · Kingsford, MI · Accident · No injuries · Class 3 · Limited · Final report · Apr 13, 2023 · N413EK · Substantial damage
  > The failure of maintenance personnel to properly secure the left carburetor bowl cover, which resulted in an engine fire before takeoff.
- [NTSB GAA23WA106](https://openairdocs.org/ntsb/GAA23WA106.md): Cessna 172 · Madrid, Spain · Incident · No injuries · Class 5 · Foreign · Mar 22, 2023 · EC-GVD · Minor damage
- [NTSB ENG23WA024](https://openairdocs.org/ntsb/ENG23WA024.md): Airbus A320 · Kota Kinabalu, Malaysia · Incident · No injuries · Class 5 · Foreign · Mar 22, 2023 · RP-C4106 · No damage
- [NTSB GAA23WA115](https://openairdocs.org/ntsb/GAA23WA115.md): Cirrus SR22 · Salto, Uruguay · Occurrence · No injuries · Class 5 · Foreign · Mar 4, 2023 · LV-GZQ · No damage
- [NTSB ERA23LA144](https://openairdocs.org/ntsb/ERA23LA144.md): Piper PA-28R-200 · Slaughters, KY · Accident · No injuries · Class 3 · Limited · Final report · Mar 2, 2023 · N9420N · Substantial damage
  > Maintenance personnel’s failure to secure the fuel strainer bowl with safety wire, which resulted in the fuel strainer bowl leaking and starving the engine of fuel. Also causal was the obstruction of two fuel injector nozzles.
- [NTSB GAA23WA075](https://openairdocs.org/ntsb/GAA23WA075.md): Piper PA46 · Dessau, Germany · Accident · No injuries · Class 5 · Foreign · Feb 22, 2023 · D-ETTG · Substantial damage
- [NTSB ENG23WA019](https://openairdocs.org/ntsb/ENG23WA019.md): Airbus A320 · Amritsar, India · Incident · Class 5 · Foreign · Feb 5, 2023 · VT-ISE · Substantial damage
- [NTSB GAA23WA066](https://openairdocs.org/ntsb/GAA23WA066.md): Cessna 206 · Stann Creek, Belize · Incident · No injuries · Class 5 · Foreign · Feb 3, 2023 · V3-HES
- [NTSB ERA23LA120](https://openairdocs.org/ntsb/ERA23LA120.md): Mooney M20C · Calhoun, GA · Accident · Serious injuries · Class 3 · Limited · Final report · Jan 28, 2023 · N5587Q · Destroyed
  > A partial loss of engine power during the initial climb due to an improperly installed spark plug.
- [NTSB ENG23WA012](https://openairdocs.org/ntsb/ENG23WA012.md): Boeing 737 · Sydney, Australia · Incident · No injuries · Class 5 · Foreign · Jan 18, 2023 · VH-XZB · No damage
- [NTSB ENG23WA014](https://openairdocs.org/ntsb/ENG23WA014.md): Learjet 35 · Hohn, Germany · Incident · Class 5 · Foreign · Jan 16, 2023 · D-CGFC · Minor damage
- [NTSB CEN23FA079](https://openairdocs.org/ntsb/CEN23FA079.md): Piper PA-32-301T · Kingfisher, OK · Accident · 2 fatal · Class 3 · Field · Final report · Jan 16, 2023 · N8266D · Destroyed
  > An oil leak of undetermined origin that resulted in an in-flight engine compartment fire and subsequent loss of airplane control.
- [NTSB ENG23WA009](https://openairdocs.org/ntsb/ENG23WA009.md): Boeing 767 · Incheon, South Korea · Incident · Class 5 · Foreign · Jan 3, 2023 · N496MM · Minor damage
- [NTSB ENG23WA007](https://openairdocs.org/ntsb/ENG23WA007.md): Boeing 737 · Mogadishu, Somalia · Incident · No injuries · Class 4 · Foreign · Dec 26, 2022 · C5-MAB · Minor damage
- [NTSB CEN23LA067](https://openairdocs.org/ntsb/CEN23LA067.md): Cessna 172F · Auburn Hills, MI · Accident · Minor injuries · Class 3 · Limited · Final report · Dec 21, 2022 · N8768U · Substantial damage
  > The catastrophic engine failure due to lack of oil lubrication, which resulted from the pilot’s failure to follow the airplane and engine manufacturers’ guidance for cold weather operation.
- [NTSB ERA23LA073](https://openairdocs.org/ntsb/ERA23LA073.md): Childs Michael A Rotorway Exec 162-F · Titusville, FL · Accident · No injuries · Class 3 · Limited · Final report · Nov 27, 2022 · N8006A · Substantial damage
  > A failure of the No. 4 exhaust valve spring retainer, which resulted in a partial loss of engine power.
- [NTSB DCA23WA076](https://openairdocs.org/ntsb/DCA23WA076.md): Boeing 737 · Maiquetía, Venezuela · Incident · No injuries · Class 5 · Foreign · Nov 24, 2022 · YV-621T · No damage
- [NTSB CEN23LA040](https://openairdocs.org/ntsb/CEN23LA040.md): Cessna 150L · Cypress, TX · Accident · Minor injuries · Class 3 · Limited · Final report · Nov 20, 2022 · N10612 · Substantial damage
  > Failure of the engine exhaust valve during cruise flight, which resulted in a loss of engine power and a forced landing.

Next page: https://openairdocs.org/ntsb-events/340/sequence.md?page=5

## 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" = '340' 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/340/sequence?page=4

---
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.