What was found
AFT PIT, DOOR SURROUND FWD SHIELD IS CORRODED. GROUNDED - YES. REMOVED DAMAGE FROM AFT PIT DOOR SURROUND FWD SHIELD IAW B737-800 SRM 53-60-15-1A-1, ORIGIN'L MATERIAL WAS .050 IAW B737-800 SRM 53-60-15-01-1 100% MATERIAL LOSS. FOUND TO BE OUT OF LIMITS IAW B737-800 SRM 53-60-15-1A-1, LOCATED AND DRILLED NEW SHIELD P/N 146A8127-12, PO#1092155.1 IAW B737-800 SRM 51-40-05, REMOVED AND REPLACED SHIELD ON AFT PIT DOOR SURROUND IAW B737-800 SRM 51-40-02 AND BOEING DWG #146A0081 REV:A.