Airlines Golden Isles Airlines Gulf Coast Airways Illini Airlines Midwest Air Charter National Test Pilot School Statewide Airlines Superior Airlines TAG Airlines Jugoslovenski Aero-Transport (JAT). Military operators Argentine Air Force Argentine Coast Guard Argentine Federal Police Force Publique Biafran Air Force – One Riley-converted Riley 400 was abandoned at Port Harcourt by Bristow Helicopters at the outbreak of civil war in 1967 and seized by Biafran mercenaries. Royal Ceylon Air Force – Six series 5 delivered between 1955 and 1958. Egyptian Air Force – Six series 1 delivered between 1947 and 1948. Imperial Ethiopian Air Force – 3, two former Ethiopian government series 1 transferred to air force in 1952 and one new series 7 in 1965. Indian Air Force – 20 Indian Naval Air Arm Royal Iraqi Air Force – 7 – One Series 1 for the Royal Flight delivered in 1947 followed by six Series 1 in 1948. Royal Flight No. 3 Transport Squadron Irish Air Corps – 4, one series 1B in 1953, one series 5 in 1959, one series 7 in 1962, and series 8 modified for radio and radar calibration in 1970. Royal Jordanian Air Force – 6 – Two Series 1 transferred from Jordan National Airlines, two aircraft intended for Jordan National Airlines converted to Series 5 and transferred to air force, two new Series 7s delivered in 1965 Royal Flight Force Aérienne Katangaise – 6 Kuwait Air Force – Two series 5 transferred to the air force in 1962. Kingdom of Laos Royal Lao Air Force Lebanese Air Force – One series 1 delivered in 1951, a further aircraft on order was not delivered. Royal Malaysian Air Force- 5 – Three series 8 delivered in 1061 followed by two former RNZAF Devon C.1s delivered in 1968 Royal New Zealand Air Force – 30 No. 42 Squadron RNZAF Pakistan Air Force – Two, one former Government of Sind series 1 used until 1962, a new VIP series 2 delivered in 1949. No. 12 Squadron Paraguayan Air Force- One former Argentine Air Force series 1 delivered in 1963. South African Air Force – Nine series 1 delivered in 1949. No. 28 Squadron Swedish Air Force – One Series 1 delivered in 1947 and sold in 1967. Aeroplane and Armament Experimental Establishment Empire Test Pilots' School Royal Aircraft Establishment Royal Air Force- 30 series 4 aircraft as the Devon C.1 from 1948. No. 21 Squadron RAF