The purchase of new AN/APG-73 radars was announced on 17 August 1998. The Commonwealth Government accepted a United States Foreign Military Sales case in October 1999, and then the prototype modification commenced on 21 August 2001. The first production modified aircraft was completed in August 2002 and the last aircraft was completed on 27 August 2003. Phase 2.2, the Multi-purpose Display Group Upgrade (MDGU) and the remaining equipment will be installed in the 2006/2007 time frame. Phase 2.3, various systems, from BAE Systems, SAAB, and Elta has not been announced. Phase 2.4, commercial contract with Northrop Grumman for the Litening AT targeting pod, will receive the targeting pods during 2007/2008.