As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MCN - MAJOR REPAIR - DURING C-17 CHECK GALVANIC CORROSION WAS FOUND ON RT VERTICAL STABILIZER FORWARD SPAR TO BODY BOLT BS 1016, STR 2 RT. MAINTENANCE REMOVED AND REPLACED RT VERTICAL STABILIZER FORWARD SPAR TO BODY BOLT IAW T/C I6B5502.