1. First test flights of mission systems (including APG-81 radar) on an F-35 aircraft took place in June 2010rn2. June 2010 test flights used Block 0.5 radar software. Block 0.5 incorporates 60 percent of the production radar softwarern3. Lockheed Martin and Northrop Grumman continue to validate JSF avionics on testbedsrn4. JSF partners plan to purchase 3,180 aircraft.
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