SDR CA130131003

Service difficulty report · Gear

Difficulty date: January 25, 2013
Submitted: September 14, 2015
Operation: General aviation
Engine: Pwa PT6A67D
System (JASC): 7210 · Turbine Engine Reduction Gear
Part: Gear
Condition: Distressed
Location: Rgb
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) THE ENGINE WAS RECEIVED AT O/H FACILITY AND DISASSEMBLED IAW THE O/H MANUAL. DURING DISASSEMBLY OF THE REDUCTION GEAR BOX AND REMOVAL OF THE 1ST STAGE CARRIER, IT WAS NOT EVIDENT THAT THE 1ST STAGE CARRIER BOLTS WERE DISTRESSED. RELEASING THE TANGS OF THE TAB WASHERS AND REMOVAL OF THE CARRIER BOLTS REVEALED 1 OF THE 1ST STAGE CARRIER BOLTS HAD SHEARED.