What was found
DURING C-CHECK, BOTH SHOT BOLT HOLES FOR LT COCKPIT PARTION ARE ELONGATED. MAINTENANCE REMOVED CHAFED UPPER PIN GUIDE FABRICATED, LOCATED AND DRILLED UPPER PIN GUIDE DOUBLER IAW EC5320-017018. INSTALLED AND TOP COATED UPPER AND LOWER PIN GUIDES IAW EC5320-01708. THE ACFT WAS APPROVED FOR RETURN TO SERVICE.