questionText: To ask the Secretary of State for Defence, pursuant to the answer of 9 June 2026 to question 6171 on F-35 Aircraft: Engines, what the timeline is for the upgrade of the remaining TR-3 refresh.
answerText: The timeline for the remaining upgrades of the United Kingdom’s F-35B aircraft to Technology Refresh 3 standard has yet to be finalised.
heading: F-35 Aircraft: Engines