Built to contract 11804 for the Ministry of Supply, dated February 1955. Registered G-APPF. Later painted in Royal Air Force Transport Command colours and serialled XN398, she was named 'Altair'. Officially handed over on 19 March 1959 to No. 99 Squadron RAF. Used within the Britannia pool at RAF Lyneham from 17 May 1961. Withdrawn from RAF service and ferried to RAF St Athan on 25 April 1975 for storage and eventual re-sale. Purchased by Euroworld and flown to Stansted Airport on 11 September 1975 for overhaul by Aviation Traders Engineering limited. Purchased in February 1977 by Zaire Aero Service, and registered 9Q-CPX she was operated by Domaine de Katale in November 1977 before being returned to Zaire Aero Service.

Again to Domaine de Katale and finally back to Katale Aero Transport before being withdrawn from service and stored. Whilst owned by Katale Aero Transport, the VIP area was retained at the rear of the aircraft and used by Katale's owner Herbert Van Orerburg. At the end of March 1981, 9Q-CPX had flown 14 211.31 hours and made 10 482 landings. Now No longer in service, January 1991, and later scrapped, in Goma, Zaire.