What was found
LCQ - MAJOR REPAIR - DURING C-12 CHECK A .5625 INCH CRACK WAS FOUND ON R-1 DOOR THRESHOLD WEB AT BS 350, RBL 64, STR 17 RT. MAINTENANCE CUT OUT CRACKED AREA OF R-1 DOOR THRESHOLD WEB AT BS 350, RBL 64, STR 17 RT; PERFORMED A HFEC INSPECTION OF CUTOUT TO VERIFY NO CRACKS EXIST; FABRICATED A DOUBLER AND FILLER; INSTALLED REPAIR PARTS IAW B757 SRM 51-70-13, FIG 1.