Service difficulty report · Bearing

Difficulty date
March 8, 1999
Submitted
March 26, 2000
Operation
General aviation
Engine
Pwa PW127
Part
Bearing
Part number
311193101
Condition
Pitted
Location
Gearbox
Part time
10,222 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

(CAN) THE ENGINE WAS SENT FOR INSPECTION AND REPAIR AFTER THE OPERATOR SUSTAINED A SEVERE LIGHTNING STRIKE. INSPECTION FOUND EXTENSIVE MAGNETIZATION OF THE STEEL COMPONENTS AND ELECTRICAL DISCHARGE PITTING DAMAGE TO THE NR 15 AND NR 18 BEARINGS THAT CLEARLY CONFIRMS THE WISDOM OF ENGINE REMOVAL AT THIS TIME. THERE WAS ALSO CONSIDERABLE FRETTING OF THE RGB BEARING BORES NECESSITATING A NUMBER OF REPAIRS TO RESTORE ALIGNMENT AND BEARING LOCATION DIAMETER ROUNDNESS.