What was found
MCN - DURING C20 CHECK DISCOVERED TOP OF BRACKET CRACKED AT BS 323, BL 57L AND WL 207, BETWEEN THE AIRSTAIR CUTOUT UPPER FRAME AND THE L-1 SILL. MAINTENANCE REMOVED AND INSTALLED NEW BRACKET AT BS 323, BL 57L AND WL 207, BETWEEN THE AIRSTAIR CUTOUT UPPER FRAME AND THE L-1 SILL IAW BOEING 737-300 SRM 51-40-02-0G FIGURES 8 AND 12.