SDR 2003FA0001168

Service difficulty report · Connecting Rod · Mooney M20J

Difficulty date: November 1, 2003
Submitted: November 17, 2003
Operation: General aviation
Aircraft: N201SL
Make and model: Mooney M20J
Aircraft serial: 240191
Engine: Lyc IO360A3B6
System (JASC): 8520 · Reciprocating Engine Power Section
Part: Connecting Rod
Part number: 77450
Condition: Broken
Location: Engine
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

IT APPEARED NR 3 CONNECTING ROD FAILED DUE TO OIL STARVATION, CAUSING ROD TO BREAK AT CAP. THE ROD THEN HIT CRANKCASE CAUSING A HOLE IN CRANKCASE AND CAUSED THE CRANKSHAFT TO SEIZE. WHILE REMOVING ENGINE FROM AIRCRAFT, DRAINED 2 QTS OF OIL OUT OF OIL PAN.

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