What was found
AT C-CHECK, AFT FWD LOWER CARGO COMPT LATERAL FLOOR SUPPORT STRAP SHOWS CRACK AT STA 440.00 NEAR L3 RT. REMOVED FLOOR SUPPORT STRAP IAW SRM 51-1-8 PAGE 11, FABRICATED DOUBLER, TREATED AND PRIMED IAW SRM 53-2-0 PAGE 26 FIG 3, INSTALLED DOUBLER WITH SOLID RIVETS IAW SRM 51-1-21 PAGE 3.