SDR N3BA201608160001

Service difficulty report · Line · Cessna 402C

Difficulty date: July 12, 2016
Submitted: August 16, 2016
Operation: Air carrier
Aircraft: N510NE
Make and model: Cessna 402C
Aircraft serial: 402C1001
Engine: Cont TSIO520*
System (JASC): 8550 · Reciprocating Engine Oil System
Part: Line
Part number: 52001099
Condition: Cracked
Location: Lt Engine Oil
Stage of operation: NR
How discovered: 9
Nature of condition: O
Precautionary procedure: O

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

What was found

OIL LINE, FROM EXHAUST BYPASS VALVE TO VARIBLE ABSOLUTE PRESSURE CONTROLLER CRACKED AT ATTACHMENT FLARE. THIS CAUSED OIL LEAK THAT GOT WORSE DURING FLIGHT. DUE TO OIL LOSS, NR 4 PISTON CONNECTING ROD FAILED FROM OIL STARVATION DURNG TAXI.

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