12 minutes to launch
 

Walker:	Flaps, reset the engine.
Chase:	Flaps coming down all right.
Walker:	And the alternator ....... Helium shutoff valve switch is open. Cabin source is 3400. Altitude is 36,000. We're 3300 on #2 and 3450 on #1, or -40 and -5. I did that without the data, I guess.
B-52:	11 minutes.
NASA 1:	Go to platform internal, Joe.
Walker:	MH-96 certainly brings .......... the platform to internal and the MH data is on, go ahead, Jack.
Russel:	Starting ...........
B-52:	10 minutes.
Russel:	Doppler on memory.
NASA 1:	Precool off, Joe.
Russel:	NASA 1, will there be a memory switch change before the turn?
NASA 1:	Roger, go to forced memory before the turn.
B-52:	Heading 009.
Walker:	I got 007. Everything looks good on the attitude and we're about 45,500 and 950 fps with zero vertical.
NASA 1:	003, start your turn right at 7 minutes.
B-52:	Roger, will turn in one minute.
Russel:	End of test on, one .......... on number 8.
Walker:	MH is off. Engine oscillograph on. End up 3° nose down after the .........check.
B-52:	6 minutes.
Walker:	Aux cabin pressure switch is on. Extinguisher automatic. MH-96 is engaged, BCS is auto. Zero on the trim and we're about +1/2 and -1/2 on the stabilizer. Both BCS are on.
NASA 1:	Give us one - your mixing chambers.
B-52:	5 minutes.
Walker:	-40. X-15 oxygen at 2600 pounds.
Russel:	Topoff is complete.
Walker:	Cabin altitude 36,000. Ventral is armed.
NASA 1:	Your turn is looking good, Fitz.
B-52:	4 minutes.
Walker:	Data on and calibrate. Tank to pressurize.
B-52:	Stabilizers look good.
Walker:	Locked out on 50 for LOX and 45 fuel and 630 peroxide tank. 2 jettison switches jettison.
Chase:	Looks good. Jettison stopped.
Walker:	Jettison off. On X-15 radio.
B-52:	3 minutes.
NASA 1:	We're reading you loud and clear, Joe.
Chase:	Stabilizer looks good to me.
Walker:	Read me, Fitz?
B-52:	Read you. 2-1/2 minutes.
NASA 1:	We read his last transmission.
Walker:	45,000 and 950. Attitudes are good. APU bearing temperatures are both +140.
B-52:	2 minutes.
Walker:	Data on.
NASA 1:	Give us an angle of attack reading, Joe.
Walker:	It's about +1/2 and the sideslip is 2° left. Push to test. .......... The gages are still +1/2 .......... Cine camera is pulse. Head bumper down.
	(This part of flight was not recorded on tape)
NASA 1:	Profile is very good and your course is very good.
Walker:	Burnout at 5700 and 138.
NASA 1:	You're right on the profile and coming just a little low now.
Walker:	30° bank angle.
NASA 1:	Holding course very well. Coming just a little low below profile.
Walker:	Attitude hold.
NASA 1:	Just a little below, coming up on 200,000.
Walker:	I show 190.
NASA 1:	Right on course.
Walker:	Little more altitude.
NASA 1:	Coming level now over the top.
Walker:	This MH system is steaming away.
NASA 1:	Pitch hold and brakes, Joe.
Walker:	Speed brakes are open now.
NASA 1:	190,000, on course. Coming slightly to the left of course. 170,000. Check angle of attack and stabilizer. We have you at 140,000, on course.
Walker:	I'm in fixed gain, RC off. Pulse. I thought you said the simulator said this wouldn't happen!
NASA 1:	Roger, we have you about 4800 fps. Bending a little to the right, Joe. Approaching Cuddeback. Coming up on 70,000 and 3700 fps.
Walker:	BCS off and I'm going to do a one system correction, low light.
NASA 1:	Rog, 3000 fps.
Walker:	OK, where are we?
NASA 1:	Watch your bounce, Joe, you're heading up hill.
Walker:	I'll bring her back down again.
NASA 1:	2000 fps.
Walker:	OK, I see the field now.
NASA 1:	We have you about 10 miles. You can bring it around to the right a little. You can modulate your speed brakes at will.
Walker:	.......... peroxide transfer. Ouch! What happened to me, the same old thing, the roll damper popped out from me and I was so busy flying I couldn't get to it.
NASA 1:	You can go to jettison anytime.
Walker:	..........
NASA 1:	Very nice position, Joe, for an overhead. Pull your brakes in if you like.
Walker:	They're in.
Chase:	Go ahead and jettison, Joe, where are you?
Walker:	I'm practically here, right up over north base. Going to the west of it. In a left turn, coming subsonic. Jettison now passing through 35,000. 300 knots. About 5 miles west of the north base there. Push to CSS. Push to test ball nose.
NASA 1:	Check your ventral armed.
Walker:	It's armed.
Chase:	What's your, altitude Joe?
Walker:	Coming down to 22 now, passing 22, up to 350, slowing down again. Turning downwind.
Chase:	OK, I see you.
Walker:	17,000, going to pressurize.
NASA 1:	I'll bet you a beer on that 2 mile marker, Joe!
Walker:	You gave me enough trouble. OK, Chase?
Chase:	You're clear of the highway.
Walker:	OK, punching off.
Chase:	It's off, looks good.
Walker:	Flaps and gear.
Chase:	Just about there. Beaut!
NASA 1:	You can turn your MH system off.
Walker:	We're reading 28,000 and about 550 fps. Data off. Got 3275 on #2 hydraulics and #1 is 3375. When I turned out the peroxide transfer the #1 system low light immediately came on. We're holding 560 on tank pressure on the APU system. Bearing temps are now both +80. Mixing chambers are both holding -45. Engine helium source is flat. #1 and #2 is 1500 pounds. #1 APU source is 1500, #2 is 2700. Cabin source is 2200, I believe it was 1800 pounds when I shut it off, the breathing oxygen. 3 axis ball heading is 198. Vertical velocity is now up to +100 fps. Stable platform going off.