What was found
DURING ACCOMPLISHMENT ON AD 85-24-02, RAM AIR PLENUM CORROSION INSPECTION. CORROSION WAS FOUND ALONG THE LEFT SIDE WING BOX CENTER SECTION AT STRINGER 5C. THE CORROSION WAS BLENDING OUT AND A DOUBLER WAS INSTALLED. THE AREA WAS REPAIRED IAW BOEING ENGINEERING LETTER AOC-OKC-98-051RR DATED 02-JUN-98 BY AAR OKC. STRUCTURAL SUBSTANTIATION OF REPAIR PLAN IS AN AMOC TO AD 85-24-02. THE AREA WAS RESTORED TO NORMAL AND THE AIRCRAFT WAS RETURNED TO SERVICE. (M)