As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE AC WAS IN FOR HVY CK FOUND RH WING INBD FLAP ANGLE GEARBOX AND TORQUE TUBE CORRODED. REPLACED GEARBOX AND TORQUE TUBE IAW AMM TASK 27-51-02-400-801-A, 27-51-03-400-801-A/400. SEE AAR NRC 4500907-6000-0013 FOR DETAILS OF WORK PERFORMED. AC REMAINS IN YQG FOR COMPLETION.