What was found
WHILE PERFORMING ROUTINE MAINTENANCE, THE TECHNICIAN DISCOVERED AN UNUSUAL SOUND COMING FROM THE LH FLAP DRIVE SYSTEM. IT WAS DETERMINED THAT THE SOUND WAS COMING FROM THE OUTBOARD FLAP FLEX SHAFT WHICH WAS ALSO VISIBLY CHATTERING. REPLACING THE CABLE ELIMINATED THE PROBLEM. THE RH OUTBOARD FLAP FLEX SHAFT WAS ALSO REPLACED SINCE IT HAD THE SAME P/N AND TOTAL TIME. IT IS IMPORTANT TO NOTE THAT THESE CABLES ONLY HAD 2047 HOURS TOTAL TIME AND 2572 TOTAL CYCLES. THEY HAVE A PUBLISHED LIFE LIMIT OF 10,000 HOURS OR 13,500 CYCLES.