Complex sentence: On 9 March, he and Terence Farrell (one of Mairéad Farrell's brothers) traveled to Gibraltar to identify the corpses and eventually negotiated a charter aircraft to collect the bodies from Gibraltar and fly them to Dublin on 14 March.
Split into simpler sentences: On 9 March, he and Terence Farrell (one of Mairéad Farrell's brothers) travelled to Gibraltar to identify the bodies. Austin eventually negotiated a charter for an aircraft to collect the bodies from Gibraltar and fly them to Dublin on 14 March.