What was found
DURING NRC CA1559/473 CORRECTIVE ACTION REMOVE WING TIP SKIN FOUND CORROSION AT RH WING CLOSURE RIB ASSY LOWER HORIZONTAL FLANGE WBL560. REPAIRE CORROSION IAW EO 737-57-0045
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DURING NRC CA1559/473 CORRECTIVE ACTION REMOVE WING TIP SKIN FOUND CORROSION AT RH WING CLOSURE RIB ASSY LOWER HORIZONTAL FLANGE WBL560. REPAIRE CORROSION IAW EO 737-57-0045