What was found
(CAN) FUEL CONTROL RECEIVED FROM CUSTOMER FOR INSPECTION FOLLOWING PREVIOUS RECORDS ABOUT PUMP FAILURE (WSDR 20040128006). FUEL CONTROL HAS TSO- 3195.3 AND WAS OPERATING ON EXTENSION TIME DUE TO A GOOD PERFORMANCES. IT WAS REMOVED FROM A/C FOR INSPECTION IAW SB. T5317A-1-107 (CECO SB.73-39). INSPECTION FOUND WORN EXCESSIVELY, WORN MAIN DRIVE INTERNAL SPLINES, SECONDARY LARGE SPLINE AND PRIMARY PUMP GEAR EXTERNAL SPLINE. THIS IS THIRD CASE OF PUMP-MAIN DRIVE SHAFT FAILURE INVESTIGATED. WE HAVE REPORTED THIS CASE TO MANUFACTURER AND WE ARE WAITING FOR FUTHER GUIDANCE.