Monday, June 23, 2025

Cessna 170A, N1249D, accident occurred on September 11, 2024, near Marshall, Indiana



  • Location: Marshall, Indiana
  • Accident Number: CEN24LA354 
  • Date & Time: September 11, 2024, 12:12 Local 
  • Registration: N1249D 
  • Aircraft: Cessna 170A 
  • Aircraft Damage: Substantial 
  • Defining Event: Powerplant sys/comp malf/fail 
  • Injuries: 1 Minor 
  • Flight Conducted Under: Part 91: General aviation - Personal

https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/195111/pdf

https://data.ntsb.gov/Docket?ProjectID=195111

On September 11, 2024, at 1212 eastern daylight time, a Cessna 170A, N1249D, was involved in an accident near Marshall, Indiana. The airplane sustained substantial damage. The airline transport pilot received minor injuries. The airplane was operated under Title 14 Code of Federal Regulations Part 91 as a personal flight.

The pilot stated that during cruise flight there was a loss of engine power that was preceded by a loud banging sound. The engine oil temperature increased, and oil sprayed onto the windshield. The pilot planned to land the airplane on a short open area but overshot the area because he could not dissipate enough of the airplane’s energy. He then landed the airplane on a corn field where it contacted the corn, nosed over, and impacted the ground.

Postaccident examination of the engine revealed a hole in the crankcase above the No. 6 cylinder assembly. The No. 6 connecting rod was fractured near its base. Metallurgical examination of the connecting rod revealed the fracture features were consistent with fatigue cracking that initiated at multiple locations on the outer surface opposite the inner bearing surfaces that mated to the crankshaft.

- Probable Cause: The fatigue fracture of the No. 6 piston connecting rod, which resulted in a loss of engine power.

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