What was found
WHILE ACFT WAS IN FOR HEAVY CHECK, FOUND RT INBD TRACK FLANGE CORRODED BETWEEN FRAME 51, FRAME 56. MAINTENANCE FOUND BEAM TO BE OUT OF LIMITS, SPLICED BEAM PN PE1156-F2C AT FRAME 51 AND FRAME 54 IAW SRM 53-00-10. REPAIR 51P, AND SRM 51-23-00 REF DATS WP 483, JC 1042 FOR WORK PERFORMED.