What was found
MCN - MAJOR REPAIR - DURING C-16 CHECK CORROSION WAS FOUND ON UPPER SURFACE OF L-1 ENTRY WAY CHANNEL (LOWER SCUFF PLATE ATTACHMENT INBOARD SIDE) BS 312 - 344, LBL 61. MAINTENANCE REMOVED CORROSION AND FOUND MATERIAL LOSS OUT OF LIMITS PER B737-300 SRM 53-10-15, PG. 101 & 106. REMOVED DAMAGED CHANNEL BS 312 - 344, LBL 61, FABRICATED A NEW CHANNEL, AND INSTALLED REPAIR IAW B737-300 SRM 53-40-02, PG. 3-4, 10-11, 26, 29, 32, 36, 38, 45, & 63, FIG. 3-4, 6-8, 12, & 14, AND DWG 65-31787-6.