 In addition to the new fighters, the contract included upgrading existing 12 F-16 C/D in the RAFO inventory.On 14 December 2011 it was announced that Oman had agreed to buy an additional 12 F-16C/D Block 50s to join the 12 F-16s C/Ds already in service.Oman was considering the purchase of either Eurofighter Typhoon or JAS 39 Gripen aircraft, but on 21 December 2012 a £2.5 billion deal was signed in Muscat to supply RAFO with 12 Eurofighter Typhoon fighter jets and eight BAE Hawk Advanced Jet Trainer aircraft, the delivery was complete in 2018.