What was found
NUMBER 2 INBD CORE COWL NR 3 RIB FROM AFT CRACKED. REMOVED NR 3 RIB & LOWER DOUBLER. WELDED RIB IAW PSM 900-7-2-1 NR 1 REV 50. REINSTALLED IAW SRM 51-40-02. SDR INFO, CRACKED LENGTH 2.5 INCHES, PN 314T1210-17, SN NSN, PART NAME RIB. ACFT WAS GNDED.