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Lockheed Martin is developing IRST functionality into the AN/AAR-56 Missile Launch Detector (MLD).
The F-22 System Program Office is working with the 422d Test and Evaluation Squadron to integrate the Visionix Scorpion helmet-mounted cueing system (HMCS), capable of off-boresight missile launches, with the aircraft. In March 2010, the USAF accelerated software portions of 3.2 to be completed in FY 2013.Applying the 3.2 upgrade to 183 aircraft was estimated to cost $8 billion, which would be funded via the early retirement of legacy fighters. In February 2013, Lockheed Martin's upgrade contract was modified to include the 3.2B features, bringing the total upgrade cost to $6.9 billion; the upgrade process is expected to be completed by 2023. The subsequent Increment 3.3 may include the adoption of an open avionics platform and air traffic control updates.
In January 2011, the USAF opened the Raptor enhancement, development and integration (REDI) contract to bidders, with a $16 billion budget. In November 2011, Lockheed Martin's upgrade contract was increased by $1.4 billion to a maximum value of $7.4 billion. Of the $11.7 billion allocated for upgrades, almost $2 billion was for structural repairs and to increase the fleet's availability rate from 55.5% to 70.6% by 2015. Some F-35 technology, such as more durable stealth coatings, have been applied to the F-22. Elements such as MADL are delayed until the F-35 program is completed. By 2012, the update schedule had slipped seven years because of "requirements and funding instability". In 2014 the USAF moved to cut funding for the Raptor upgrades. In 2016, the F-22 fleet is planned to have 36 Block 20 training aircraft and 149 Block 30/35 combat aircraft.
