Galuminum alloy, ams4218-t6; 2.900 inch high; 3.100 inch wide; two 0.196 inch diameter , 0.204 inch diameter holes in line; two 0.126 inch diameter holes in line; two 0.199 inch diameter holes in line; metal removal per fps-3017; in process weld per fps-1082 pemissible; mark x-ray serial number per fps-3008 class 1a other inspectionmarkings per class 2b; class iia inspection in accordance with fps-1001 required; penetrant inspect per ndts 1101 zone 6