SDR CA130731005

Service difficulty report · Sun Gear

Difficulty date: July 31, 2013
Submitted: September 14, 2015
Operation: General aviation
Engine: Pwa PT6A114A
System (JASC): 7210 · Turbine Engine Reduction Gear
Part: Sun Gear
Condition: Spalled
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

(CAN) EIR PT6A 2013-065, THIS ENGINE WAS SENT FOR INVESTIGATION AFTER THE OPERATOR REPORTED METAL IN OIL. THERE WAS SPALLING ON THE 1ST STAGE SUN GEAR AND THE MATING PLANETARY GEARS FOUND. IT IS LIKELY THAT THE METAL IN OIL WAS THE RESULT OF THE MISSING MATERIAL CAUSED BY THE SPALLING OF THE 1ST STAGE SUN GEAR AND PLANETARY GEAR.