As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING ACCOMPLISHMENT OF THE LT WING UPPER STRINGER 13/14 TAB ONLY REPAIR AT WS 656.5 RIB, THE VENTB OX ACCESS HOLE WAS INADVERTENTLY CUT INBD OF THE RIB INSTEAD OF OTBD. THIS REPAIR WAS BEING ACCOMPLISHED PER B727 M/M 57-13-0 FIG. 804, REPAIR FOR TAB CRACKS ONLY. THIS ER/A AUTHORIZES MIRRORING THE REPAIR TO ACCOMMODATE THE ACCESS HOLE ON THE INBD SIDE OF WS 656.5 RIB. AD 88-17-06.