What was found
IN FWD PIT, CARGO DOOR LOWER THRESHOLD SUBPANEL HAS SEVERAL AREAS OF CORROSION, MARKED IN RED. GROUNDED - YES. REMOVED CORROSION ON FWD CARGO DOOR LOWER SILL WEB. ORIGINAL THICKNESS IS .045", MATERIAL REMOVED IS .002", REMAINING THICKNESS IS .043", FOUND TO BE WITHIN LIMITS IAW B737-NG SRM 53-30-15-1A-1. APPLIED ALODINE AND PRIMER IAW B737-NG 51-20-01.