What was found
DURING M-CHECK FOUND CABIN FLOOR PANEL NR78 IS CRACKED AT AFT END SCREW HOLE APR 1.5 IN CUT OUT CRACK (ZAE) FLOOR PANEL NR78 1.5"X 4.7" IAW SRM 53-05. MATERIAL IS 7075-T6 .025 PO122211 FILLER, DOUBLER 7075-T6.032, PO1022537. FABRICATED DOUBLER & FILLER IAW SRM 53-03 ALODINED IAW 51-10-3 AND PRIMED. NDT VERIFIED NO CRACK. CONTAINMENT IAW NDT SPM 06-10-01.001, TOOL W-39915 WITH TOOL H-9427 ID REPAIR WITH TAG IAW PROC STANDARD 900-5-11, NR 04, INSTALLED PARTS IAW 53-05.