As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE IN FOR C-CHECK, MAINTENANCE FOUND THE TENSION TIE RIB AFT SHEAR FITTING VERTICAL BOLT HOLES HAVE CORROSION IN BORES. MAINTENANCE REMOVED THE CORROSION, REPLACED THE BUSHING DUE TO MISALIGNMENT. ALL WORK WAS PERFORMED BY BOEING PER CONTRACT 6-1171-TA-377 AND SB 727-55-56.