SDR 2008F00023

Service difficulty report · Pushrod · Cessna 402B

Difficulty date
October 7, 2004
Submitted
October 27, 2008
Operation
General aviation
Aircraft
N5421M
Make and model
Cessna 402B
Aircraft serial
402B0021
Engine
Cont IO520*
Part
Pushrod
Condition
Failed
Location
Engine
Stage of operation
NR
How discovered
O
Nature of condition
R, J
Precautionary procedure
A

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

What was found

ENGINE HAD MANIFOLD AND FUEL PRESSURE VARIATION IN FLT, THE ACFT BEGAN TO VIBRATE AND THE PILOT SHUTDOWN ENGINE. THE NR 1 AND NR 2 ROD`S FAILED AND SEPARATED FROM THE CRANKSHAFT AND CREATED (2) LARGE HOLES IN THE CASE AND KNOCKING BOTH MAGNETOS LOOSE. THERE ARE SIGNS OF OIL STARVATION ON THE CRANK AND OVERHEATING ASIGNS ON THE CRANKSHAFT. REMOVAL OF OTHER CYLINDERS INDICATED OIL STARVATION ON THE NR (6) AND (5) ROD`S ALSO. OVERHEATING OF THE CRANK AT THOSE LOCATIONS IS EVIDENT. PILOT VERIFIED LOSING OIL PRESSURE BEFORE SHUTTING THE ENGINE. (K)

More about the Cessna 402B