What was found
MCN - C20 - MAJOR REPAIR - CHANNEL ASSEMBLY CRACKED AT BS 520, WL 204, BL 0 (LEFT) & BS 520, WL 208.1 BL 0 (RIGHT). REPLACED CHANNEL ASSEMBLY AT BS 520, WL 204, BL 0 (LEFT) & BS 520, WL 208.1 BL 0 (RIGHT) IAW B737 SRM 51-40-02 & 51-40-04.