As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEVEL 1 CORROSION, NR 4 PYLON INBD AND OUTBD MID SPAR CHORDS HAVE LIGHT SURFACE CORROSION AT NAC ST 267-257 NAC WL 180. REMOVED CORROSION AND CHORDS REPROTECTED PER BOEING SRM 51-10-01, 54-10-01 AND SB 747-54-2159 R2, NON ROUTINE CARD S/N 6003.