What was found
MAIN CARGO DOOR FITTING THAT HOLDS LOCK PINS, NR 6 POSITION MISSING HEAD, REMOVED 2 EA UPPER BOLTS AT NR 1 POSITION, 1 EA AT NR 6 POSITION FOUND HEAVY CORROSION TO HARDWARE. ACFT GROUNDED. ACCOMPLISHED RE-TORQUE ON BASE LATCH ASSEMBLIES IAW AMM 52-35-05, REQUIRED NEW HARDWARE ON BS 460-165, BS 400-24, BS 396-22. INSTALLED NEW HARDWARE ON LATCH BASES AT FUSELAGE BS 369, 2 AT 460, AND 400. REF AMM 52-35-05. ACFT RELEASED FOR THE FERRY FLIGHT, IAW FERRY PERMIT DATED 5-20-2016 TO ACCOMPLISH REPAIR TO MAIN CARGO DOOR. COMPLETED 400-52FCD-17144-1 MAIN CARGO DOOR LATCH BOLT INSPECTION.