Uploaded April 2023 | Updated September 2026, 41 minutes ago

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The F-35 has been upgraded several times, but its engine never has. To enable the capabilities planned for the next upgrade, known as Block 4, Pratt & Whitney is proposing the F135 Engine Core Upgrade – a “drop-in” improvement that will save billions for taxpayers and give warfighters what they need in a timely way.

Chapter 1: Trust: youtu.be/oLSLaOf58_Q