What was found
DURING 'C' CHECK, MAINTENANCE FOUND WING CENTER SECTION LOWER SKIN AT FRONT SPAR BETWEEN LBL 42 AND RBL 13 CORRODED. INSTALLED REPAIR IAW EO B727-5710-6575A AND DHC 915-561 REV B.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DURING 'C' CHECK, MAINTENANCE FOUND WING CENTER SECTION LOWER SKIN AT FRONT SPAR BETWEEN LBL 42 AND RBL 13 CORRODED. INSTALLED REPAIR IAW EO B727-5710-6575A AND DHC 915-561 REV B.