What was found
IN THE AFT GLY AT BS 1050 LBL 60 WL 176, THERE IS A CRACK IN THE LOWER FLANGE OF STR 21 UNDER THE FAIL-SAFE CHORD. REPAIRED CRACKED STR AT BS 1050 LBL 60 WL 176 ON LOWER FLANGE OF STR 21L PER FEDEX SRM 53-10-3 FIG 1. THE FAIL-SAFE CHORD PER FEDEX SRM 51-40-4 FIG 2, WHICH WAS REMOVED TO GAIN ACCESS TO DAMAGED AREA ON STR 21L.