Hawker Furies. However, only six Furies were sent to Damascus, and they never encountered any Israeli aircraft. Moreover, due to the limited amount of cannon ammunition supplied by the British, and the absence of bombs, they were only used for armed reconnaissance. In the end, the four surviving aircraft were handed over to Egypt in October 1948. Despite these early problems, in 1951 the RIrAF purchased 20 more Fury F.Mk.1s, for a total of 50 F.Mk.1s single-seaters and 2 two-seaters, which equipped No. 1, No. 4 and No. 7 Squadrons. In the early 1950s, thanks to increased income from oil and agricultural exports, the RIrAF was thoroughly re-equipped. In 1951, 15 each of de Havilland Canada DHC-1 Chipmunks, Percival Provosts and North American T-6s were bought to replace obsolete de Havilland Tiger Moth trainers. With these new aircraft, the RIrAF Flying School was expanded into the Air Force College. The training curriculum was improved, and the number of students graduating each year was increased. This allowed to form a solid basis for the RIrAF's long-term growth. Also in 1951, the RIrAF bought its first helicopters: three Westland Dragonflies. The RIrAF's first jet fighter was the de Havilland Vampire: 12 FB.Mk.52 fighters and 10 T.Mk.55 trainers were delivered from 1953 to 1955. These were quickly supplemented by 20 de Havilland Venoms, delivered between 1954 and 1956. Following the formation of the Baghdad Pact, the United States donated at least six Stinson L-5 Sentinels and seven Cessna O-1 Bird Dogs to the RIrAF. The RAF also vacated Shaibah Air Base, and the RIrAF took over it as Wahda Air Base. In 1957, six Hawker Hunter F.Mk.6s were delivered. The next year, the United States agreed to provide 36 F-86F Sabres free of charge. However, this plan was never realised. Following the 14 July Revolution of 1958, which resulted in the end of monarchy in Iraq, the influence of the Iraqi Communist Party grew significantly. The first commander of the Iraqi Air Force (the "Royal" prefix was dropped after the revolution), Jalal Jaffar al-Awqati, was an outspoken communist, and encouraged prime minister Abd al-Karim Qasim to improve relations between Iraq and the USSR. The Soviets reacted quickly, and in the autumn of 1958 a series of arms contracts was passed between Iraq and the Soviet Union and Czechoslovakia. These stipulated the delivery of MiG-15UTI trainers, MiG-17F fighters, Ilyushin Il-28 bombers, and Antonov An-2