Pilot Debrief

CESSNA 172F near Eagle Butte, SD — 2021-07-11

Final reportCEN21LA316
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Date
2021-07-11
Location
Eagle Butte, SD, USA
Airport
84D
Aircraft
CESSNA 172F
Registration
N5340R
Category
Airplane
Highest injury
None
Fatalities
0
Phase of flight
Descent

Probable cause

A total loss of engine power due to the fatigue failure of the No. 6 connecting rod.

NTSB narrative

The pilot reported that, while in cruise flight, the engine began running rough, and shortly after, lost all power. The pilot executed a forced landing into a wheat field, during which the airplane nosed over and came to rest inverted, resulting in substantial damage to the fuselage and left lift strut. Examination revealed a large hole in the top of the engine case adjacent to the No. 6 cylinder. Further examination revealed that the No. 6 connecting rod failed in fatigue, which resulted in the total loss of engine power.

Analysis

Primary failure mode
Engine power loss
First missed decision gate
Pilot could have landed earlier after noticing high oil temperature and noise.

NTSB coding

Evidence available

  • Photos
  • 4 docket documents
View NTSB final reportView NTSB docket

Docket documents4

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