NAVAIR expands F-35 Block 4 development effort
An F-35A Lightning II assigned to the 355th Fighter Squadron taxis on the runway on Eielson Air Force Base, Alaska, on 19 October 2021. (Photo: USAF/Airman 1st Class Jose Miguel Tamondong)
NAVAIR awards Lockheed Martin a contract to support flight tests and capabilities for the most advanced version of the F-35.
Lockheed Martin is to provide non-recurring engineering, detailed aircraft modification execution planning and technical data packages in support of modifications to the US F-35 Lightning II developmental test fleet.
A maximum $206.83 million contract modification from Naval Air Systems Command (NAVAIR), announced by the DoD on 20 October, adds scope to support flight tests for the F-35 developmental test fleet and for capabilities delivered in the F-35 Block 4 effort in support of the Joint Strike Fighter programme for the USAF, USMC, USN and non-DOD participants.
Lockheed Martin will fulfil the contract by December 2025. Work will be carried out at three US locations: Fort Worth, Texas (60%), Patuxent River, Maryland (20%) and Edwards Air Force Base, California (20%).
Related Programmes in Defence Insight
More from Air Warfare
-
![Protecting the horizon]()
Protecting the horizon
Make it an unfair fight, with the EA-37B. Deny, degrade, and disrupt the enemy.
-
![Singapore P-8A buy integral to future maritime domain awareness network]()
Singapore P-8A buy integral to future maritime domain awareness network
Singapore’s acquisition of the Boeing P-8A Poseidon will be part of a maritime domain awareness network that could include unmanned aerial systems.
-
![Peru cleared for possible $3.42 billion F-16 Block 70 buy]()
Peru cleared for possible $3.42 billion F-16 Block 70 buy
The potential foreign military sale covers 12 F-16 aircraft as well as related training and equipment support, the DSCA notice said.
-
![DSEI 2025: The fighter market shift to Manned-Unmanned Teaming (MUM-T)]()
DSEI 2025: The fighter market shift to Manned-Unmanned Teaming (MUM-T)
Manned-Unmanned Teaming (MUM-T) capabilities is set to become a market differentiator for fighter aircraft, allowing 4.5-5th generation platforms to remain relevant to the battlefield.
-
![Project Kuiper’s LEO network pioneers Space-as-a-Service]()
Project Kuiper’s LEO network pioneers Space-as-a-Service
The Kuiper Network enables organizations to buy, rather than build, applications that serve mission needs at mission speed.
