What was found
AFT CARGO DOOR CUTOUT SUB SCUFF PLATE STRUCTURE HAS MULTIPLE SPOTS OF CORROSION. GROUNDED - YES. REMOVED CORROSION FROM THE AFT PIT DOOR CUT OUT LOWER WEB. ORIG MATERIAL WAS .045" IAW B737-800 SRM 53-60-15-01-1. REMOVED .019", REMAINING IS .26" AND IS FOUND TO BE OUT OF LIMITS IAW B737-800 SRM 53-60-15-1A-1. REPAIRED AFT PIT DOOR CUT OUT LOWER WEB USING PN: 146A8123-25 IAW B737-800 SRM 51-40-02 AND SRM 51-40-05.