As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON ANNUAL INSPECTION, LT WING AFT SPAR WING ATTACH FITTINGS, PN''S 5011023-1 AND 5-11024-1, INTERGRANULAR CORROSION FOUND IN AREAS READILY VISIBLE EACH AREA OF CORROSION APPROXIMATELY 1.50 SQUARE INCH AND APPROXIMATELY .1250 INCH DEEP. NO IDEA ON SPECIFIC CAUSE. NOT IN DIRECT AREA OF EXHAUST. SUBMITTER COMMENDED DETAILED VISUAL INSPECTION TO PREVENT RECURRANCE. FITTINGS CHANGED WITH NEW PARTS. (X)