What was found
DURING HEAVY MAINTENANCE: AFTER LATCH FITTINGS REMOVAL IN REF WITH NRC 071,CORROSION ON LOWER BEAM IN CUTOUT AT FWD CARGO DOOR; REF TOMX WO # 2404 NR # 00144 CORROSION ON LOWER BEAM IN FWD CARGO DOOR CUTOUT WAS REMOVED PER EMB-190 SRM 51-12-01 AND SRM 51-10-03 AND EVALUATE WITH THE FOLLOWING MEASURES: OT= .236 IN, RT= .170 IN THEREFORE IS OUT LIMITS PER EMB 190 SRM 53-21-11/AD53 AND NDT MANUAL PART 4 51-04-00-270-804-A - LOWER BEAM WAS REPLACED PER EMB 190 SRM 51-43-04 , SRM 51-43-03 AND SRM 51-41-01.