As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE IN HEAVY MAINTENANCE IT WAS NOTED THAT THE LT RAM AIR PLENUM LOWER WING SKIN CORRODED AT PREVIOUS REPAIR. REMOVED FASTENERS, CLEANED CORROSION, PERFORMED NDT INSPECTIONS AND REWORKED FASTENER HOLES. FABRICATED DOUBLER, TRIPLER, QUADRUPLER AND FILLER. INSTALLED REPAIR IAW COTNEY AEROSPACE EA EAAG90-1. NO OTHER DEFECTS WERE NOTED. AIRCRAFT WAS RETURNED TO SERVICE.