What was found
NUTPLATE STRAP CORRODED AT STA 1721 LEFT SIDE ABOVE PNEUMATIC DUCT. REMOVED AND REPLACED NUTPLATE STRAPS, IAW B757 SRM 51-40-02 B757 SRM 51-20-01, BOEING DWG: 146N5693 REV: B. ACCOMPLISHED EA: F-5321-T0357460-P1 FUSELAGE-CARGO COMP FLOORS -FLOOR SUPPORT, STA 1717 BLB 31 WL 208, CORROSION.