Model Types ModelDel'dFromTo Westland Sioux List of Aircraft Model C/N Built ID Sioux wa593 w/o 1983 1967G-BENG : 09sep80 crashed Barmby Moor whilst spraying pesticides on crops. ... : GSM Helicopters Ltd at Ripon, Yorkshire; w/o 24jun83 Sioux wa603 1967G-BFJT : GSM Helicopters at Ripon, Yorkshire until 24jun82 to Cyprus 5B-CE ... Sioux wa712/was234 w/o 1982 1969G-BGFS : Reg to GSM Helicopters at Ripon, Yorkshire, w/o 30jun82 : Stored with Alpha Aerotech at Chilbolton by Mar 1990. Sioux wa707/wat229 1969G-BGKK : GSM Helicopters at Ripon, Yorkshire, 16jun82 to 5B-CEW Sioux wa457 1967G-BGTZ : GSM Helicopters at Ripon, Yorkshire, 05Aug83 to Cyprus as 5B-CFJ