X-15 Flight 91 Reaches Record Altitude, August 22, 1963

X-15 Flight 91 reaches the highest altitude of the X-15 program (107.96 km (67.08 mi) (354,200 feet)).

X-15 Flight 91 reaches the highest altitude of the X-15 program (107.96 km (67.08 mi) (354,200 feet)).

Date: August 22, 1963

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