What was found
NUMBER 2 PYLON OTBD SIDE BEHIND PANEL OPENING 447 ERX IN HYD BAY A CHANNEL IS CRACKED AT APPROXIMATELY NAC STATION 310, CRACK IS 3 INCHES. R & R AFT FAIRING OTBD BEAM IAW DWG 313T 2380 & SRM 51-40-02. CRACKED LENGTH IS 3 INCHES, PN 313T1380-242, PART NAME AFT FAIRING OTBD BEAM, SN NA , EXACT FS & BS LOCATION NAC 305. ACFT WAS GNDED.