As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FUEL CONTROL UNIT P/N 897801-2, S/N: 2122481 WAS RECEIVED FOR PRECAUTIONARY SPLINE INSPECTIONS DUE TO CUSTOMER REPORTED ACCELERATED STUB SHAFT SPLINE WEAR. DISASSEMBLY AND INSPECTION REVEALED STUB DRIVE SHAFT P/N 3499-096 WITH ACCELERATED WEAR ON INTERNAL SPLINES.