The references to "NASA" indicate explanatory references NASA provided to the
Time Crew Crew
(Min:Sec) Member Comment
T-2:05 MS2 Would you give that back to me?
T-2:03 MS2 Security blanket.
T-2:02 MS2 Hmm.
T-1:58 CDR Two minutes downstairs; you gotta watch running down there?
(NASA: Two minutes until launch.)
T-1:47 PLT OK there goes the lox arm.
(NASA: Liquid oxygen supply arm to ET.)
T-1:46 CDR Goes the beanie cap.
(NASA: Liquid oxygen vent cap.)
T-1:44 MS1 Doesn't it go the other way?
T-1:39 MS1 Now I see it; I see it.
T-1:39 PLT God I hope not Ellison.
T-1:38 MS1 I couldn't see it moving; it was behind the center screen.
(NASA: Obstructed view of liquid oxygen supply arm.)
T-1:33 MS2 Got your harnesses locked?
(NASA: Seat restraints.)
T-1:29 PLT What for?
T-1:28 CDR I won't lock mine; I might have to reach something.
T-1:24 PLT Ooh kaaaay.
T-1:04 MS1 Dick's thinking of somebody there.
T-1:03 CDR Unhuh.
T-59 CDR One minute downstairs.
(NASA: One minute until launch.)
T-52 MS2 Cabin Pressure is probably going to give us an alarm.
(NASA: Caution and warning alarm. Routine occurrence during prelaunch.)
T-50 CDR OK.
T-47 CDR OK there.
T-43 PLT Alarm looks good.
(NASA: Cabin pressure is acceptable.)
T-42 CDR OK.
T-40 PLT Ullage pressures are up.
(NASA: External tank ullage pressure.)
T-34 PLT Right engine helium tank is just a little bit low.
(NASA: SSME supply helium pressure.)
T-32 CDR It was yesterday, too.
T-31 PLT OK.
T-30 CDR Thirty seconds down there.
(NASA: 30 seconds until launch.)
T-25 PLT Remember the red button when you make a roll call.
(NASA: Precautionary reminder for communications configuration.)
T-23 CDR I won't do that; thanks a lot.
T-15 CDR Fifteen.
(NASA: 15 seconds until launch.)
T-6 CDR There they go guys.
(NASA: SSME Ignition.)
MS2 All right.
CDR Three at a hundred.
(NASA: SSME thrust level at 100% for all 3 engines.)
T+O MS2 Aaall riiight.
T+1 PLT Here we go.
(NASA: Vehicle motion.)
T+7 CDR Houston, Challenger roll program.
(NASA: Initiation of vehicle roll program.)
T+11 PLT Go you Mother.
T+14 MS1 LVLH.
(NASA: Reminder for cockpit switch configuration change.
Local vertical/local horizontal.)
T+15 MS2 (Expletive) hot.
T+16 CDR Ooohh-kaaay.
T+19 PLT Looks like we've got a lotta wind here today.
T+20 CDR Yeah.
T+22 CDR It's a little hard to see out my window here.
T+28 PLT There's ten thousand feet and Mach point five.
(NASA: Altitude and velocity report.)
T+35 CDR Point nine.
(NASA: Velocity report, 0.9 Mach.)
T+40 PLT There's Mach one.
(NASA: Velocity report, 1.0 Mach.)
T+41 CDR Going through nineteen thousand.
(NASA: Altitude report, 19,000 ft.)
T+43 CDR OK we're throttling down.
(NASA: Normal SSME thrust reduction during maximum dynamic pressure region.)
T+57 CDR Throttling up.
(NASA: Throttle up to 104% after maximum dynamic pressure.)
T+58 PLT Throttle up.
T+59 CDR Roger.
T+60 PLT Feel that mother go.
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.