As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE IN AMS FOR C-CHECK, MAINTENANCE REPORTED RT WING L/E STRIP OF RABBET AREA IS BULGED AT WS 1520, CORROSION FOUND ON UPPER CHORD. REWORKED CORROSION ON UPPER CHORD AND REPAIRED UPPER CHORD ACC TO KLM DFX 96-034 APPROVEL PER UPS EFN 747-57-0307.