The U.S. Department of Defense is grappling with serious challenges in the F-35 Lightning II program as its latest Technology Refresh-3 (TR-3) upgrade package faces significant production setbacks. According to F-35 Program Executive Officer Lt. Gen. Michael Schmidt, Lockheed Martin and its subcontractors have been unable to produce the necessary components for TR-3 hardware on schedule. This shortage has led to major delays in aircraft deliveries and is driving costs up by nearly $1 billion, affecting both U.S. taxpayers and allied nations purchasing the aircraft.

Lockheed Martin had committed to delivering 52 upgraded F-35 jets this year, but only 21 aircraft have been handed over so far. Lawmakers stated that these delays will financially burden Lockheed, as the company is obligated under cost-plus development contracts to absorb much of the overrun.

In addition to hardware shortages, software integration issues have emerged as a critical challenge. Simulation labs have struggled to accurately replicate flight environments, and test flights have experienced repeated setbacks. Lockheed has announced that the TR-3 package will not be ready until mid-next year, signaling over a year of delays in the program. As a result, the Pentagon has suspended acceptance of new F-35 deliveries until the issues are resolved.

Lt. Gen. Schmidt indicated that there is cautious optimism the problems could be addressed by spring 2024, but stressed that this timeline is far from guaranteed. Meanwhile, Lockheed has begun testing new software versions and is working to accelerate the delivery of TR-3 hardware.

In a further blow to the program, the Pentagon has halted negotiations with Lockheed over a planned five-year sustainment agreement for the F-35 fleet. Officials explained that industry proposals failed to deliver adequate cost savings or performance improvements, prompting a pause in talks.