Service difficulty report · Piston · Cessna 421C

Difficulty date
February 20, 1999
Submitted
March 26, 2000
Operation
General aviation
Make and model
Cessna 421C
Engine
Cont GTSIO520L
Propeller
Mcauly 3FF32C501
Part
Piston
Condition
Failed
Location
Engine
Stage of operation
CL
Nature of condition
E, J
Precautionary procedure
E, B, A

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

(CAN) PILOT REPORTED VIBRATION FOLLOWED BY LOSS OF OIL PRESSURE. IN-FLIGHT SHUTDOWN CARRIED OUT. POST-FLIGHT INVESTIGATION INDICATED PISTON FAILURE DUE TO DETONATION. FURTHER REPORT TO FOLLOW.

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