What was found
CORROSION EXTERNAL SKIN STRAP AT TOILET SERVICE CUT OUT AT LOWER FUSELAGE WL 152.5 AND BS 847 TO BS 867 BETWEEN S-24L AND 25L. BLENDED EXTERNAL SKIN STRAP AT TOILET SERVICE CUT OUT AT LOWER FUSELAGE WL 152.5 AND BS 847 TO BS 867 BETWEEN S-24L AND S-25L MEASUREMENTS ARE: L=3.418' W=1.968' MRT=0.080' AND EVALUATED REWORKED AREA AND STRAP MUST BE REPLACED DUE TO ALLOWABLE DAMAGE NOT FOUND ON SRM B737-700. REPLACED STRAP (PLATE-HINGE CLOSEOUT), IAW B737-700 SRM 51-10-02; SRM 51-40-02 AND DWG NR 146A7401 SHEET 13 REV A. REPAIR STRAP P/N:146A7401-7, IAW DWG NR 146A7401 SHEET 13 REV A.