Service difficulty report · Crankcase · Cessna 402C

Difficulty date
November 12, 2019
Submitted
November 12, 2019
Operation
Air carrier
Aircraft
N57PB
Make and model
Cessna 402C
Aircraft serial
C4020300
Aircraft time
27,283 hours, 51,351 cycles
Engine
Cont TSIO520VB
Engine time
213 hours, 248 cycles
Part
Crankcase
Condition
Failed
Location
Lt Engine
Part time
213 hours, 248 cycles
Stage of operation
CR
How discovered
O
Nature of condition
T, Y
Precautionary procedure
O

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

What was found

PILOT REPORTED STEADILY DECREASING OIL PRESSURE AT LT ENGINE. CREW INTENTIONALLY CAGED LT ENGINE WHEN ‘MECHANICAL’ NOISES WERE HEARD AND SAFELY LANDED. INITIAL INSPECTION FOUND MULTIPLE CRANKCASE BREACHES AND INDICATIONS OF POSSIBLE OIL STARVATION. ADDITIONAL DETAILS WILL BE AVAILABLE UPON ENGINE TEARDOWN INSPECTION.

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