As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RT IB FLAP ACTUATOR WOULD NOT ACTUATE. UPON TEARDOWN INSPECTION DISCOVERED THE 90 DEGREE DRIVE ASSEMBLY, FLAP CABLE CONNECTOR COUPLING HAD SHEARED THE ROLL PIN THAT CONNECTS THE COUPLING TO A DRIVE GEAR. THIS 90 DEGREE DRIVE ASSEMBLY HAS NO FIELD MAINTENANCE REQUIREMENTS BEYOND LUBING AND CHECKING GEAR FREEPLAY. THIS PART IS NOT ALLOWED TO BE REPAIRED IN THE FIELD AND NO INSTRUCTIONS TO INSPECT THE SHEAR PINS. THE FLAP ACTUATOR WAS LAST EACH 10,000 CYCLE INSPECTED 9/04. (K)