What was found
MCN - MAJOR REPAIR - DURING C-17 CHECK CORROSION WAS FOUND ON UPPER AND LOWER SURFACE OF FLOORBEAM UPPER CHORD AT BS 986, BETWEEN LBL 45 AND RBL 45, WL 208. MAINTENANCE REMOVED DAMAGED SECTION OF FLOORBEAM UPPER CHORD AT BS 986, FROM LBL 45 TO RBL 45; FABRICATED A NEW REPLACEMENT SECTION OF UPPER CHORD, 2 EACH SUPPORT ANGLES AND STRAPS; INSTALLED REPAIR PARTS IAW E.R. 03-5310-05007-RC2.