Model Types ModelDel'dFromTo AW AW1392016 Sikorsky S-76C619942017 List of Aircraft Model C/N Built ID AW139 31719 2016VH-EXA : ESSO Australia from Jun16, test serial I-PTFS : offshore AW139 31720 2016VH-EXH : ESSO Australia from Jul16 AW139 31742 2016VH-EXI : ESSO Australia from Oct16 : offshore AW139 31748 2016VH-EXJ : ESSO Australia from Dec16 : offshore S-76C 760422 1994VH-EXK : ESSO Australia May94-2017 AW139 31886 VH-EXK : ESSO Australia from Jan20, test serial I-PTFS S-76C 760423 1994VH-EXN : ESSO Australia May94-2017 S-76C 760432 1995VH-EXU : ESSO Australia Jul95-2017 S-76C 760434 1995VH-EXW : ESSO Australia Jul95-2017 S-76C 760435 1995VH-EXX : ESSO Australia Aug95-2017 S-76C 760446 1996VH-EXZ : ESSO Australia Apr96-2017