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Originally Posted by M21Sniper
Military aircraft absolute altitude level flight:
Height (ft).........Date ........Plane type ...........Pilot ......................Place
85,068.997 July 28, 1976 SR71 Capt. Robert C. Helt (USAF) Beale AFB, Calif.
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And that's only the disclosed number. SR-71's absolute performance numbers are still top secret.