Challenger – 20 Years Ago – STS-51-L

patch

Mission crew

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explosion

T+1:02…………PLT….. Thirty-five thousand going through one point five

(NASA: Altitude and velocity report, 35,000 ft., 1.5 Mach).

T+1:05…………CDR….. Reading four eighty six on mine.

(NASA: Routine airspeed indicator check.)

T+1:07…………PLT….. Yep, that’s what I’ve got, too.

T+1:10…………CDR….. Roger, go at throttle up.

(NASA: SSME at 104 percent.)

T+1:13…………PLT….. Uhoh.

T+1:13…………………..LOSS OF ALL DATA.

trails upward

photo’s and transcript from NASA