As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING C-7 CHECK, INSPECTION REPORTED LT. WING INSPECTION LIGHT HOUSING CORRODED AROUND OUTER PERIMETER OF MATING SURFACE TO FUSELAGE SKIN AT STA. 500B INSIDE AIRCRAFT. MAINTENANCE REMOVED LIGHT HOUSING AND CLEANED, TREATED AND PRIMED AREA. INSTALLED NEW LIGHT HOUSING ASSY. AND TREATED, PRIMED AND PAINTED EXTERIOR PER SRM 51-10-6, 53-10-1 51-30-2 AND SOPM 20-41-02.