15 minutes to launch
 

Walker:	Helium shutoff switch now open. -65 and -55 on hydraulic temps. Data on. #1 APU coming on. #2 APU on. OK reset.
NASA 2:	003, start your turn right at 7 minutes.
Walker:	Data off and turn off electrical power switches. Engine oscillograph on, vibration recorders on.
NASA 2:	Joe, start your engine reset.
Walker:	Reset in just a second. Engine controls .......... going back up. Platform on internal. Fire extinguisher to automatic.
B-52:	Read cutout memory attitude when started to turn, like to have you get a reading on .......... looks good vertical velocity ..........
Walker:	SAS check OK, back to 8-8-8.
NASA 2:	Give us a ball temp.
B-52:	Holding 175. 5 minutes to launch.
NASA 2:	Joe, are you on X-15 oxygen?
Walker:	Affirmative.
B-52:	4 minutes.
NASA 2:	Joe, we had a temporary radio cutout, like to confirm cine camera pulses and check ventral armed.
B-52:	Pulses good, Joe, a11 3.
Walker:	Roger, pressurize. OK, earphone is off, we're on lower antenna, we are on X-15 radio.
B-52:	3 minutes, on heading.
Walker:	3 minutes, how do you read, NASA 2?
NASA 2:	Read you 5 square, how me?
Walker:	5 square.
B-52:	Doppler in specs. Platform in specs. Prime is good. 2 minutes to launch.
Walker:	2 minutes. 25,800' a second. O vertical velocity, good, attitude .......... push to test ball nose.
NASA 2:	Verify that 11 items have been checked through 48, over.
Walker:	B-52 .......... and APU's running is 9O and 70. Data and calibrate.
NASA 2:	Joe could you give us a Lox tank pressure?
Walker:	Lox tank pressure 50 ..............
B-52:	1 minute, arm switch on, light check, verify, Joe.
Walker:	Igniter ready light.
B-52:	50 seconds.
Walker:	Precool. Lox bearing -31 1/2. -41 on NH3. Pump idle.
B-52:	20 seconds. 10 seconds.
Walker:	Igniter idle.
B-52:	Igniter idle good. 5, 4, 3, 2, 1, release.
Walker:	.......... SAS malfunction.
NASA 2:	Everything looks good, Joe. Very good, Joe, 35 seconds, 50,000.
B-52:	6 miles, Joe.
NASA 2:	4000 feet a second, Joe .......... 70 seconds, 71, 72, shutdown, Joe. You're just to right of course, looking good. Coming up on 100, 000.
Walker:	Setting up Mach, stabilizer trim. Pulse, BCS pulse.
NASA 2:	We have you at 110,000, 4500' a second. Turn 10° left. Coming back down 90,000. .......... BCS switches off, Joe.
Walker:	OK, and my suit's inflated.
NASA 2:	OK, we show an increase in cabin pressure down here. NASA 1, we have lost the radar.
B-52:	Joe, if you can look out, these .......... clouds just about 20 miles north of base.
NASA 1:	NASA 2, we have radar, we will take control.
NASA 2:	Roger.
NASA 1:	Joe, BCS switches off, you are at 2400' per second.
Walker:	.......... and I have the field in sight if you're worried about that ...........
NASA 1:	You're looking real good, Joe.
Walker:	I'm getting a heading of 200 feet ..........
NASA 1:	Right, Joe, your present heading is real good, in between Rosamond and Edwards. What's your altitude, Joe?
Walker:	I'm switching over to center stick. I'm showing 59,000.
NASA 1:	Joe we have you at 62,000, do not use speed brakes. You can go to jettison any time now.
Walker:	OK on jettison, peroxide jettison switch off.
NASA 1:	Turn another 5° left.
Chase:	Are you jettisoning now, Joe?
Walker:	Affirmative on jettisoning. Showing 45,000.
NASA 1:	Joe, we have you approximately 25 miles NW.
Chase:	Haven't seen a jettison failure .........
Walker:	.......... tank pressure going down.
NASA 1:	Chase 4, he is about 5 miles SW of Saltdale.
Walker:	And I'm flying 8° angle of attack here.
NASA 1:	Your present heading looking real good. Do you still have the field in sight?
Walker:	I have the south end of the lake bed in sight.
NASA 1:	Your present heading looks like it will take you to the north edge of the lake.
Walker:	Going to have to go a little faster, maximum L/D to keep from getting in a stall buffet.
NASA 1:	42,000 feet, Joe, approximately 15 miles NW.
Walker:	Affirmative.
Chase:	Want another reading?
NASA 1:	Affirmative, he is south SW of Saltdale, 10 miles.
Walker:	Flying about 140 at the moment.
Chase:	OK Joe. This cloud coverage here is scattered ......... 20 and 30,000.
Walker:	Coming up on 33,000 flying over top of .... tending to thicken out over there.
NASA 1:	Chase 4, he is about 3 miles north of Hiway 66, almost true north of NASA.
Chase 4:	OK, I've got him right now. I don't know if I'll have him in another minute or not. .
NASA 1:	We have you about 4 miles out, Joe.
Walker:	Yep.
Chase 4:	I've lost you right now.
Walker:	OK, going in to right turn for a pattern. 300 knots.
NASA 1:	Joe, what's your pressurize tank handle position?
Walker:	OK, pressurize. OK, turn on base. Ready to jettison ventral.
Chase:	Hold about 2 seconds, go ahead.
Walker:	Drop.
Chase:	..........
Walker:	Gear.
Chase:	Nose gear down ...... Beauty, Joe!
Walker:	Wahoooo!
NASA 1:	Complete post flight check off list and cycling of reaction control handle also.
Walker:	Oxygen 1200 lbs.  #1 system 3200, Hyd. #2 3400.  2 sources, #1 is 0 and #2 23, 2250.  Bearing Temp 80.  Hyd Temp, #1 +60, #2 +55.  Peroxide Tank Press 600.  Engine Helium source Press l00#. #l l900, #2 l900.  Cabin Source Press 1400.  Heading is 200 .......  Inertial height climbing to 23,000 feet.  Got a pretty good .......... on altitude, shutdown at peak on the flight - come out about what the radar said.  Inertial Climb is 400' a sec. up.  Total velocity is showing 600' a sec.  Stable Platform off, going off with APU switches.