SDR CA120823009

Service difficulty report · Bearing · Piper PA31350

Difficulty date: August 23, 2012
Submitted: September 14, 2015
Operation: General aviation
Make and model: Piper PA31350
Engine: Lyc LTIO540J2BD
Propeller: Hartzl HCE3YR2A
System (JASC): 7414 · Magneto/Distributor
Part: Bearing
Condition: Worn
Location: Magneto
Stage of operation: IN
How discovered: 9
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

(CAN) DURING SCHEDULED MAINTENANCE, 100 HR INSPECTION, IN ADJUSTING POINTS, THE AME NOTICED BRASS SHAVINGS OR DEBRIS IN THE MAGNETO. CLOSER INSPECTION SHOWED THAT ONE GEAR AXLE HAD EXCESSIVE SIDE TO SIDE PLAY DUE TO A FAILED TOP BEARING. PLAY IS APPROXIMATELY .0625", MAGNETO R & R WITH O/H UNIT. TSO 234.2 HOURS. INSTALLED ON THE ACFT 18 SEPTEMBER 2009.

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