On 30 April, the Greek Ministry of Defence signed and forwarded to the United States the letter of offer and acceptance formally initiating the upgrade of 85 Hellenic Air Force (HAF) F-16 aircraft to the Viper configuration (Block 70/72).
This follows Greek government approval of the upgrade on 28 April under a Foreign Military Sales programme originally announced by the US State Department on 17 October 2017.
The programme, with a total cost of about EUR1.1 billion (USD1.33 billion), will extend the operational lives of 55 F-16 C/D Block 52+ (Peace Xenia III programme) and 30 F-16 C/D Block 52+ Advanced (Peace Xenia IV programme) aircraft to 2048, implemented by Lockheed Martin in the United States and Hellenic Aircraft Industry (HAI) at its Tanagra facilities.
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