What was found
WHILE AIRCRAFT WAS OUT OF SERVICE FOR HEAVY CHECK. CFIII LOWER STRUCTURE, FR 76 AT STR 28-29R SHEAR CLIP CORRODED, REPLACED PER SRM 51-41-01 & 02 PSE 53-23-003 FCS 53-23-00-002. AIRCRAFT REMAINS OUT OF SERVICE FOR COMPLETION OF HEAVY CHECK.