Lockheed Martin has delivered all 72 F-35 fighter jets that were previously grounded at its Fort Worth facility due to delays in the rollout of Technology Refresh 3 (TR-3) upgrades. These enhancements boost the aircraft’s combat readiness with faster processors, improved displays, and next-generation mission systems designed for both high-intensity training and operations in contested environments.
To ensure timely progress, the Pentagon withheld up to $5 million per jet until TR-3 functionality was confirmed. After progress was observed in early 2025, the withheld amount was reduced by $1.2 million per unit. However, most of the funds remain blocked and will be gradually released through 2026. The same condition now applies to newly produced aircraft.
According to Jon Ludwigson from the Government Accountability Office (GAO), these delays have disrupted program timelines and slowed critical upgrades. Full return to the planned delivery schedule is expected to take several more months.
About the F-35A Lightning II
The F-35A is a fifth-generation stealth fighter developed for the US Air Force. Designed for multi-role missions, it combines stealth, advanced sensors, and electronic warfare capabilities. The aircraft features the AN/APG-81 AESA radar, EOTS targeting system, and Distributed Aperture System for 360-degree threat detection. The helmet-mounted display system (HMDS) projects key data directly onto the pilot’s visor.
Its armament includes an internal 20mm Vulcan cannon and a range of stealth-compatible munitions such as AIM-120, AIM-9X, GBU-31 JDAM, and AGM-88 HARM. Powered by the F135 engine, it reaches Mach 1.6, an altitude of 50,000 feet, and a combat radius of roughly 1,380 miles.
Financial and Operational Pressures
Despite its capabilities, the F-35 program continues to face logistical and budgetary issues. Poor inventory tracking of spare parts and rising maintenance costs prompted the Department of Defense to reduce the 2026 F-35 order from 75 to 47 aircraft across all branches. Lockheed Martin, which earns nearly 30% of its revenue from the F-35, declined to comment on the recent deliveries.
While the TR-3 integration marks a milestone, the program must overcome structural challenges to meet operational goals and restore production stability. As the TR-3 jets enter service, both the Pentagon and Lockheed Martin will remain under pressure to maintain timelines, control costs, and satisfy international partners.
