For 48 seconds, flying at 20,000 feet, we purposely turned off the engine of T-7A test aircraft to test its ability to restart mid-flight.
T-7A test aircraft reached 560 mph/901 kph at just 150 feet/45.7 meters off the ground during high speed low altitude testing

The Boeing/Saab T-7 Red Hawk, originally known as the Boeing T-X, is an American/Swedish advanced jet trainer developed by Boeing Defense, Space & Security in partnership with Saab Group. It was selected on 27 September 2018 by the United States Air Force (USAF) as the winner of the T-X program to replace the Northrop T-38 Talon.
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