As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SEAM SEALANT AND THE L/E OF THE UPPER BONDED T/E PANEL ARE BULGED UP WITH CORROSION UNDER THEM, ON THE LEFT WING T/E UPPER SPAR CAP, FROM 2 TO 6 FEET OUT FROM THE FUSELAGE, IN THE EMERGENCY ESCAPE PATHWAY AREA. REPAIRED L/H WING UPPER SKIN BTW WSTA 160 TO WSTA 199 AFT OF REAR SPAR CORROSION PER DELTA ER/A 628739-14AD. (1188044)