Service difficulty report · Cylinder · Cessna 421C

Difficulty date
March 29, 2013
Submitted
April 12, 2013
Operation
Air carrier
Aircraft
N421DS
Make and model
Cessna 421C
Aircraft serial
421C0169
Engine
Cont GTSIO520*
Propeller
Mcauly 3FF32C501
Part
Cylinder
Part serial
234232R
Condition
Separated
Location
Engine
Part time
4,668 hours
Stage of operation
CR
How discovered
O
Nature of condition
E
Precautionary procedure
E

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

What was found

DURING FLIGHT, ENGINE HAD A SMALL VIBRATION, FOLLOWED BY A LOUD NOISE, PILOT SHUT ENGINE DOWN AND SAFETY LANDED. INITIAL INSPECTION SHOWED RT ENGINE NR 5 CYLINDER SEPARATION FROM CASE BY SHEARING ALL FLANGE BOLTS, CYLINDER DAMAGED RT SIDE ENGINE ACCESSORIES FUEL INJECTION LINES, EXHAUST ASSY AND RT SIDE COWLING AND TOP COWLING. A DETAILED INSPECTION WILL BE CONDUCTED.

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