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In a training flight an instructor can sit in the front or back seat; both have lightweight Martin-Baker ejection seats that are activated by a handle on the seat.

Defense Department officials said that all F-35 ejection seats were inspected after the Air Force in July 22 temporarily grounded its F-35 fleet over ejection seat concerns.

But it’s also different in that it’s the only one of the three variants that has an auto-eject function on its ejection seat, according to seat manufacturer Martin-Baker.

I deal with the ejection seats and the environmental control systems of the F/A-18 Super Hornet, which directly support the pilot’s life, like oxygen and cabin pressurization.

F-35s have Martin-Baker ejection seats, the Air Force said, and the service will "execute a stand-down on July 29 to expedite the inspection process" of those systems.