SDR CA100726003

Service difficulty report · Shaft

Difficulty date: July 12, 2010
Submitted: January 4, 2011
Operation: Air carrier
Engine: Pwa PT6A67D
System (JASC): 7314 · Engine Fuel Pump
Part: Shaft
Condition: Damaged
Location: Fuel Pump
Stage of operation: CL
How discovered: O
Nature of condition: R, J
Precautionary procedure: A

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

What was found

ENGINE SUSTAINED AN IFSD DURING CLIMB. TROUBLESHOOTING REVEALED THAT THE HP FUEL PUMP INTERNAL SPLINE ON THE REAR END OF THE SHAFT WERE STRIPPED, THE SHAFT WAS TURNING FREELY INSIDE THE PUMP WHEN TURNED BY THE END OF THE SHAFT. THE FUEL PUMP HAS APPROX 10940 HRS AND THE OPERATOR TBO IS 12000 HRS. MFG WILL INVESTIGATE TO ESTABLISH ROOT CAUSE AND SUPPLEMENT THE REPORT ONCE THE INFORMATION IS AVAILABLE.