As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CENTER WING REAR SPAR WEB CORROSION. THIS REPAIR IS ACCOMPLISHED BY BLENDING OUT CORROSION AREAS. SECTION OF THE SLOPING PRESSURE DECK ANGLE WHICH WAS REMOVED TO GAIN ACCESS TO CORRODED AREAS IS ALSO REPLACED. THIS IS ACCOMPLISHED USING TWO SPLICE ANGLES. THIS ECRA PROVIDES INSTRUCTIONS TO REINSTALL 3 OF THE REAR SPAR WEB STIFFENERS USING ALTERNATE FASTENERS PER ECRA 482-57-142-2.