What was found
AFT LOWER CARGO FRAME UPPER FLANGE CORRODED UNDER NUTPLATE AT FS 1153 LBL 21. R & R AFT LOWER CARGO FLOOR SUPPORT UPPER FRAME CHORD IAW SRM 53- 00-51. SDR INFO CORRODED LEVEL 2, PN 146T1213-11, SN NSN, EXACT FS & BS, LOCATION ON ACFT FROM 1153 TO 1153. ACFT WAS GNDED.