SDR 96ZZZX6140

Service difficulty report · Gear Tooth · Piper PA31P

Difficulty date: December 5, 1996
Submitted: March 26, 2000
Operation: General aviation
Aircraft: N18MC
Make and model: Piper PA31P
Aircraft serial: 31P7300143
Engine: Lyc TIGO541E1A
System (JASC): 8510 · Reciprocating Engine Front Section
Part: Gear Tooth
Part number: 75562
Condition: Broken
Location: Prop Shaft
Part time: 4,117 hours
Stage of operation: IN
Nature of condition: O
Precautionary procedure: K

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

What was found

ENGINE SOUNDED ROUGH ON SHUT DOWN. FOUND EXCESSIVE PLAY IN PROPELLER. DRAINED OIL, PULLED SUCTION SCREEN, FOUND PIECE OF TOOTH IN SCREEN. ENGINE TORN DOWN, FOUND BROKEN TEETH ON PROP SHAFT DRIVE GEAR, ALSO, DRIVE GEAR DAMAGED. SUBMITTER SUSPECTS PREVIOUS CRACK CAUSED TOOTH TO BREAK OFF.

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