12 minutes to launch
 

B-52:	11 minutes to launch.
McKay:	11 minutes. Precool switch off.
NASA 1:	008, correct right 1°.
B-52:	Roger, right l°. 1O minutes.
McKay:	APU cooling switch normal.
Russel:	LN2 switch off.
McKay:	Both blowers and BLN2. Pressure cooling coming on. Reading 445 on altitude, 860 on velocity, and zero on Hdot. Looking good. Attitudes looking good and source is 3250. Do you want data off on APU's, Bob?
NASA 1:	Negative on data and, 008, this is 9 minutes.
B-52:	9 minutes now.
NASA 1:	Cleared to turn at 8.
McKay:	Understand you want data?
NASA 1:	Negative on data.
McKay:	Data coming on. Helium shutoff valve open.
NASA 1:	Negative on the data, Jack, you can turn it off.
McKay:	Roger. Starting #2.
Chase:	Looks good.
McKay:	Roger.
B-52:	We looking good for 20°, right?
NASA 1:	Affirmative.
McKay:	Is that APU running?. Close hydraulics. #l coming on.
Chase:	Rog.
McKay:	#2 hydraulic took quite a bit of time coming up there.
B-52:	8 minutes, starting turn.
McKay:	8 minutes, reset. Everything looks good. Hydraulics are 3500 on #l and #2. Flaps coming down.
NASA 1:	Engine reset, Jack?
Chase:	Flaps coming down.
McKay:	Engine on reset.
Chase:	Rog, coming up. Flaps are up.
McKay:	Data is off. Mixing chambers, #1 is -40, #2 is -50. Slight oscillation. Left .......... is showing 2° left yaw, and 2° on alpha.
B-52:	7 minutes.
McKay:	7 minutes. Aux cabin pressure switch on. Turn on IFDS.
Russel:	Lube oil temp 105°.
McKay:	Fire ext auto. Alt SAS armed.
B-52:	6 minutes.
McKay:	6 minutes. Got a good SAS check. Alt SAS is armed. Blood pressure coming on.
NASA 1:	Roger.
McKay:	Hi lo hi gain. And a roll BCS check, Pete.
Chase:	Rog, good.
McKay:	Roger. Horizontal stabilizer.
B-52:	5 minutes.
McKay:	5 minutes. X-15 oxygen.
Russel:	Lox topoff is complete.
McKay:	Roger. Cabin altitude is 36. Had a .......... light blink but it's out now.
NASA 1:	Rog. Fitz, we'll give a call at 4 minutes.
B-52:	Roger, want me to roll out on 214°?
NASA 1:	Rollout on 216°.
B-52:	Roger.
NASA 1:	What was your oxygen supply, Jack?
McKay:	2600.
NASA 1:	Roger. 4 minutes now.
McKay:	4 minutes. You say we got topoff?
Russel:	Topoff is complete.
McKay:	Data on. Calibrate. Going to pressurize. Liquid oxygen coming up, reading 44 on ammonia, 48 on LOX.
NASA 1:	Roger.
McKay:	Holding steady. 3 jettison switches to jettison. Data off. Intercom switch off.
B-52:	3 minutes.
McKay:	3 minutes, how do you read on X-15 radio, Bob?
NASA 1:	Read you loud and clear. 2° right, 008.
B-52:	2° right, 218°.
McKay:	Inertial velocity is 730, what are you reading, Jack?
Russell:	752.
McKay:	Roger. 445 on altitude, zero on H dot. Attitudes are looking good. APU bearing temp, #1 is +7O and #2 is +20.
NASA 1:	Very good, Jack, how do you read me?
Russel:	Do you read NASA 1, Jack?
McKay:	Say again!
Russel:	NASA 1 is calling you.
McKay:	Go ahead, NASA 1.
NASA 1:	Roger, did you read me now?
McKay:	Read you five square.
NASA 1:	Roger.
McKay:	Have we passed the 2 minute point?
B-52:	2 minutes now, Jack.
McKay:	2 minutes. Data on.
NASA 1:	008, 3° right.
B-52:	221, you want me to come back to launch heading just before we go?
NASA 1:	Affirm.
McKay:	Push to test ball nose. Calibrate. Alpha is 1° and reading 2° right on beta. Cine camera pulse.
NASA 1:	IFDS altitude, Jack?
McKay:	ON. Fitz, did you call 1 minute?
B-52:	Not yet.
NASA 1:	1 minute now.
McKay:	1 minute. Altitude switch is on. Going to prime. Igniter ready light. Precool. Igniter idle. 10 seconds. Pump idle. Manifolds 255, 300. Looking good.
NASA 1:	OK, Jack.
McKay:	Ready launch light. Altitude looking good. 3, 2, 1 launch!
NASA 1:	Got a good light. Should be on theta now.
McKay:	Going to use little speed brakes. My theta is not working.
NASA 1:	Roger, your climb angle looks good right now. Little bit low on altitude. Little low on theta at 60. You can go little bit higher, Jack, at 70.
McKay:	OK, the beta is not working.
NASA 1:	Roger. There's 80,000 feet, you can bring theta up a little bit, 90, 100.
McKay:	Shutdown.
NASA 1:	Roger, understand shutdown. 130, RAS on, auto on.
McKay:	Little..........
NASA 1:	Roger, 140. We're going to be considerably low, Jack. About peaking now, about 150. Had about 5000 on velocity, peak now and speed brakes to 20.
McKay:	How's my altitude and velocity?
NASA 1:	Roger, we had 5000 at peak, 51 max. 140, should be coming up on 20° alpha. Hold as much alpha as you can, Jack, on this reentry. 120. RAS off. Your energy is looking real good now, Jack. There's 100.
McKay:	115.
NASA 1:	OK, you can bring your speed brakes back out, just a little bit left of course, Jack.
McKay:	Topoff.
NASA 1:	Rog, your energy is good, speed brakes out, you can start down.
McKay:	Altitude?
NASA 1:	Altitude is 85 right now and over Three Sisters. 600 fps and Hdot down. Little bit high, Jack. Start down. You can push your nose down and look for the base.
McKay:	Got it.
NASA 1:	Joe, he's about 10 miles southeast of Cuddeback. Going over your head now.
Chase:	Roger.
NASA 1:	80,000, 75,000 now. Start a right turn at 270, Jack.
McKay:	Got brakes coming out.
NASA 1:	OK. 2.5 Mach number at 65,000 feet.
McKay:	Say again.
NASA 1:	You're about Mach 2 now.
McKay:	OK, brakes coming in.
NASA 1:	Roger. 55 and he's right over outer marker, Joe.
Chase:	OK.
NASA 1:	60,000, Jack, you can go left now. Watch your angle of attack at 1.5, 45 000.
McKay:	Slight buffet.
NASA 1:	Roger. Watch your angle of attack. 40,000. Go to jettison. Should be coming subsonic now at about 33,000.
McKay:	Roger.
Chase 4:	Tally ho.
NASA 1:	Roger.
McKay:	Jettisoning peroxide.
NASA 1:	Roger, go ahead and jettison. Turn engine master off. Show you about 25,000, how does that check, Jack?
McKay:	Showing 80 on inertial.
Chase:	OK, Jack, closing in here, looks like 20,000 now.
McKay:	Rog.
Chase:	Flaps, squat circuit breakers.
McKay:	Got them.
NASA 1:	Jettison engine peroxide, Jack.
McKay:	Say jettison engine peroxide?
NASA 1:	Affirm.
McKay:	OK, coming off ...................
NASA 1:	Stop jettison on peroxide. Stop jettison on peroxide, Jack.
McKay:	Say again?
NASA 1:	Stop jettison in peroxide.
McKay:	Going pressurize. Altitude?
Chase:	10,000, Jack.
McKay:	Speed brakes coming out.
Chase:	4,000 now. Flaps.
McKay:	Flaps.
Chase:	Don't see them coming - They're coming down. Gear. 3 good ones. 5 feet, 3, 2, 1 beautiful, real nice, Jack.
McKay:	3 axis ball heading 188. Inertial height 120,000. Inertial climb 300 fps +. Velocity 300 fps. X-15 oxygen 1600. Hydraulic pressures, #1 .is 3300, #2 is 3400. H202 tank pressure 498. APU bearing temps, #l is +80 and #2 is +70. Mixing chambers, #1 is -40 and #2 is -40. Engine helium source is zero. Helium source pressure, #1 is 1250 and #2 is 1250. APU source pressure, #1 is 1700 and #2 is 2400. Cabin source is 1500.