Jim Lovell (CDR)

Roger. Okay. We've just about got roll.

Vance Brand (CAPCOM)

13, Houston. We see you now in the AUTO maneuver. How are your error needles looking now?

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Jim Lovell (CDR)

Okay. They look like they are working their way in, Vance.

Vance Brand (CAPCOM)

Okay. You think maybe they are working right now?

Jim Lovell (CDR)

Yes. Because we got a 270-degree roll, our pitch and yaw needles are reversed.

Fred Haise (LMP)

Say, how do you read, Vance? …

Vance Brand (CAPCOM)

Fred, you are starting to fade out. Request AFT OMNI, OMNI AFT.

Fred Haise (LMP)

Okay. You've got AFT OMNI.

Jim Lovell (CDR)

Okay, Houston; Aquarius. We appear to be there—at the burn attitude. And now do you want us to change the DAP?

Vance Brand (CAPCOM)

Roger, Jim. We have a procedure to give you for widening the deadband to 5 degrees for the PTC in the next 3 or 4 hours, if you're ready to copy.

Vance Brand (CAPCOM)

Okay. VERB 21, NOUN 01, ENTER; 3011, ENTER; 44, ENTER. Now, that's the procedure for widening the deadband to 5 degrees with the DAP. Later on, prior to the burn, you would return the deadband to 1.4 degrees, and if you're ready to copy, I'll read you that.

Vance Brand (CAPCOM)

Okay. To return the deadband later to 1.4 degrees: VERB 21, NOUN 01, ENTER; 3011, ENTER; 200, ENTER. Over.

Fred Haise (LMP)

Okay, Vance. To widen the deadband, we'll enter a VERB 21, NOUN 01, ENTER; 3011, ENTER; 44, ENTER. Before the burn to go back to narrow deadband, it's VERB 21, NOUN 01, ENTER; 3011, ENTER; 200, ENTER.

Vance Brand (CAPCOM)

Roger, Readback correct.

Jim Lovell (CDR)

And, Houston, I'll guess we'll do this PTC in yaw, and do you want them all powered down?

Vance Brand (CAPCOM)

Okay, that's affirm. You'll be doing the PTC in yaw, and we'll give you a call at each time you change yaw—yaw attitude. Aside from that, request low bit rate off; then DOWN VOICE BACKUP OFF; then POWER AMPL OFF; and then FDAI OFF.

Fred Haise (LMP)

Okay, Vance. On the power down, we go low bit rate; DOWN VOICE BACKUP, we'll pull the POWER AMPL breaker; and we'll power down the FDAI and the AC.

Vance Brand (CAPCOM)

That's affirm. And the AOT, too.

Jim Lovell (CDR)

Okay, are you all set for old a -

Fred Haise (LMP)

Okay, Houston; Aquarius. How do you read DOWN VOICE BACKUP?

Vance Brand (CAPCOM)

Reading you loud—loud and clear now, Fred.

Jim Lovell (CDR)

Oh, Vance, do you want to stay in this attitude for a certain length of time before we start maneuvering?

Vance Brand (CAPCOM)

Roger. Jim, we'll keep you there for about an hour, and then we'll have our first 90-degree rotation.

Jim Lovell (CDR)

Okay. How wide do I make the deadband?

Jim Lovell (CDR)

… the other OMNI's in.

Fred Haise (LMP)

Yes. My forward OMNI is in.

Vance Brand (CAPCOM)

Apollo 13, Houston. Forward OMNI should be best.

Jim Lovell (CDR)

I don't see why the hell he …

Fred Haise (LMP)

I know. I don't know. I don't know where that 5 degrees …

Jim Lovell (CDR)

Oh-h. … that thing against the …

Jim Lovell (CDR)

I'm just going to try and close my eyes for a little.

Vance Brand (CAPCOM)

Fred, one—one point on the PTC requests that, about an hour or less from now when you make your 90-degree change, that you do it in PGNS AUTO as opposed to ATT HOLD. Reason is that if you're in ATT HOLD, it establishes a new null point each time you stop the—the maneuver. Over.

Fred Haise (LMP)

Okay. You want us to make the maneuver with PGNS AUTO rather than the PGNS ATT HOLD. Is that right?

Vance Brand (CAPCOM)

And, Fred, advise that it—it is a manual maneuver.

Vance Brand (CAPCOM)

13, Houston. You'd be using X-axis override. It will be a manual maneuver, but with the PGNS AUTO mode.

Vance Brand (CAPCOM)

And if you're ready to copy, Charlie is going to be on in a minute with some recommended checklist changes for your upcoming burn. Over.

Jim Lovell (CDR)

I'm going to erase this.

Charlie Duke

Hello, Aquarius; Houston. Do you read? Over.

Fred Haise (LMP)

Okay. Which book are you going to give me some words in, Charlie?

Fred Haise (LMP)

Houston, Aquarius. Which book do you want us to have out? contingency …?

Charlie Duke

Houston. This is Houston, Aquarius. Say again. Over.

Fred Haise (LMP)

Houston, Aquarius. Which book do you want me to update here, Charlie, the contingency QR DPS?

Charlie Duke

Okay, Fred-o, we'd like you to get out the contingency checklist; turn to page 1, the 2-hour activation. Over.

Fred Haise (LMP)

Okay. I'm right there.

Charlie Duke

Okay. On page 1, the only thing we have to do is EPS Activation, step 2, CB(16) EPS: DISPLAY, CLOSE. Over.

Fred Haise (LMP)

Okay. On page 1, we need EPS DISPLAY, CLOSE, under EPS Activation, step 2.

Charlie Duke

Okay. Turning over to page 2, we'd like you to complete step 5 and step 6 with the following changes. POWER/TEMP MONITOR, AC BUS, INVERTER 2, then INVERTER 1. Fourth line CB(11), EPS: INVERTER 2, OPEN. Over.

Fred Haise (LMP)

Okay, on step number—or page 2, we should do step 5 and modify step 6 second line to read INVERTER 2, then INVERTER 1, to the last line of step 6 CB(11), EPS INVERTER 2, OPEN.

Charlie Duke

Okay. That will be on CB(16), Fred-o, but it's INVERTER 2 OPEN. Okay, on the Mission Timer Activation. Do step 1, correction, lines 1 and 2. Omit “set mission timer on CSM mark” and insert a VERB 16, NOUN 65, set mission timer. Over.

Fred Haise (LMP)

Okay. We'll do the Mission Timer Activation except we'll set it on VERB 16, NOUN 65.

Charlie Duke

Okay. Proceeding on to step, correction, page 3, CWEA checkout. Step 1, perform step 1. Warning lights will be ASCENT PRESS, CES AC, and CES DC. Under the caution lights, we may have a heater light. And that's all. Okay, perform—under the circuit breaker 16 —

Fred Haise (LMP)

I can't understand you. I'll switch OMNIs.

Fred Haise (LMP)

I'm going to switch to OMNIs here, Charlie, you're starting to fade out.

Charlie Duke

Understand. Switching OMNIs. Over.

Fred Haise (LMP)

Okay. How do you read? …, how do you read me now?

Charlie Duke

Okay, you're a little better. How me? Over.

Fred Haise (LMP)

Okay, Houston. Coming in loud and clear. I got your caution/warning checkout, step 1, do; the warning lights we'll have will be ASCENT PRESS, CES AC, CES DC. The only caution lights we may have will be a heater light and go ahead and proceed from there.

Charlie Duke

Okay, good. The component light, we won't have the H2O SEP. Okay, on CB(16) right under that, “HEATER DISPLAY, CLOSE,” you can scratch that out. Perform all of step 2 and perform step 4 with the following changes. On panel 11, under AC BUS B, are you ready to copy? Over.

Charlie Duke

Okay, under AC BUS B: S-BAND ANTENNA, OPEN; ORDEAL, OPEN. Under AC BUS A: TAPE RECORDER, OPEN. Row 2 under RCS SYSTEM A: MAIN SOV. Starting with a QUAD TCA; all four CLOSED. Under FLIGHT DISPLAYS: CROSS—COMMANDER CROSS-POINTER, OPEN; COAS, OPEN; ORDEAL, OPEN. For row 3 under HEATERS: RENDEZVOUS RADAR STANDBY, OPEN; LANDING RADAR, OPEN. Under STAB/CONTROL: ATTITUDE DIRECT CONTROL, CLOSE. Under ED: LOGIC POWER A, OPEN; and under LIGHTING: UTILITY, OPEN. Are you with me? Over.

Fred Haise (LMP)

Yes. I'm still with you, Charlie; go ahead.

Charlie Duke

Okay, Fred-o, good show. On row 4, starting with ECS: SUIT FAN 1, CLOSE; GLYCOL PUMP AUTO TRANSFER, CLOSE. Under COMM: VHF B TRANSMITTER, OPEN; VHF A RECEIVER, OPEN. Under PGNS: SIGNAL STRENGTH DISPLAY, OPEN; IMU OPERATE, CLOSE. Under EPS, row 5: CROSS TIE BUS, OPEN; and INVERTER 1, CLOSE. Over.

Fred Haise (LMP)

Okay, stand by just 1.

Fred Haise (LMP)

Okay, panel 11 configuration, top row: AC BUS B, I want the S-BAND ANTENNA, OPEN, ORDEAL, OPEN; AC BUS A, TAPE RECORDER, OPEN. Second row, under RCS SYSTEM A, I want MAIN SOV through QUAD 1 TCA, all CLOSED. COMMANDER'S X-POINTER under FLIGHT DISPLAYS, OPEN; COAS, OPEN; ORDEAL, OPEN. Third row: RENDEZVOUS RADAR STANDBY HEATER, OPEN; LANDING RADAR HEATER, OPEN. Under STAB/CONTROL: ATTITUDE DIRECT breaker, CLOSED; ED: LOGIC POWER A, OPEN; LIGHTING: UTILITY, OPEN. Under ECS: SUIT FAN 1, CLOSED; AUTO TRANSFER, CLOSED. Under COMM: VHF B TRANSMITTER, OPEN; VHF A RECEIVER, OPEN. Under PGNS: SIGNAL STRENGTH DISPLAY, OPEN; IMU OPERATE, CLOSED. Bottom row, EPS: CROSS TIE BUS, OPEN; INVERTER 1, CLOSED.

Charlie Duke

Roger, Fred. Good readback. Starting with panel 16. Under FLIGHT DISPLAYS, row 1: SE CROSS-POINTERS, OPEN; RCS SYSTEM Bravo—QUAD 1 TCA's, CLOSE; QUAD 2, CLOSE; QUAD 3, CLOSE; QUAD 4, CLOSE. Second row, under LIGHTING: FLOOD is your choice. You can either use them or not. Under ED: LOGIC POWER Bravo, OPEN; ECS: SUIT FLOW CONTROL, OPEN. Third row, under COMM: DISPLAY, OPEN; VHF A TRANSMITTER, OPEN; VHF B RECEIVER, OPEN; S-BAND ANTENNA, OPEN. Fourth row, under HEATERS: DISPLAY, OPEN; under EPS: INVERTER 2, OPEN. And that's it. Readback. Over.

Fred Haise (LMP)

Okay, panel 16, top row, FLIGHT DISPLAYS: SYSTEM ENGINEER CROSS-POINTER, OPEN; RCS SYSTEM B: QUADs 1 through 4 TCAs, all CLOSED. Second row, LIGHTING: FLOODS we'll probably have open—our choice. ED: LOGIC POWER B, OPEN; ECS: SUIT FLOW CONTROL, OPEN. Under COMM: DISPLAY, OPEN; VHF A TRANSMITTER, OPEN; VHF B RECEIVER, OPEN; S-BAND ANTENNA, OPEN. Bottom row, HEATERS: DISPLAY, OPEN. Under EPS: INVERTER 2, OPEN.

Charlie Duke

Roger. Good readback. Okay, continuing on. Nothing on page 6; nothing on page 7. Nothing on page 8 or 9. Nothing on page 10 or 11. On page 12, we want the—to perform —

Fred Haise (LMP)

Hold it. Hold on just a minute, Charlie.

Fred Haise (LMP)

Okay. Go ahead, page 12. I'm there.

Charlie Duke

Okay Fred-o. On page 12, we want the MSFN updates. We've got some vectors for you and a P30 pad. And we'll—when you get to that state, we'll let you know when we want to uplink. Okay. Under “AGS Activation and Self Test,” perform the entire procedure. On page 13, under “AGS Aline,” do step 1; under “DAP Set, Gimbal/Throttle Test,” do step 1 with the following change. Under “THROTTLE CONTROL,” we want it “AUTO.” Over.

Fred Haise (LMP)

Okay. I'll catch up here. On page 12, you'll give us MSFN updates, some vectors, and a P30; and we're to do the entire “AGS Activation and Self Test.” On page 13, we'll do the “AGS Align” and under “DAP Set, Gimbal/Throttle Test,” step 1, I've changed “THROTTLE CONTROL MANUAL” to “THROTTLE CONTROL AUTO.”

Charlie Duke

Good readback. Turning over to page 14, step 2, we want you to change the DAP NOUN 46 to 31021. Then after the NOUN 47, insert “VERB 34, ENTER.” Over.

Fred Haise (LMP)

Okay. On page 14, a VERB 48, DAP load, NOUN 46 changed to 31021. I assume you will give us any updated weights if we need any, and after the NOUN 47, a “VERB 34, ENTER.” So, I—you're saying our gimbals look all right.

Charlie Duke

That's affirmative on the gimbals, Fred. Nothing else on page 14. Proceed to page 15, and under “RCS CHECKOUT,” we'd like to scratch that wording and just say “Verify the following switches: GUIDANCE CONTROL, PGNS;” step 3—correction—it's line 3, change “ATTITUDE CONTROL (3)” to “MODE CONTROL;” “MODE CONTROL (BOTH)” to “AUTO.” Verify ACA PROP, LMP ENABLE; ACA/4 JET, LMP ENABLE; TTCA/TRANSLATION, LMP, ENABLE. That is all on page 15. Over.

Fred Haise (LMP)

Okay. On page 15, we'll change the heading “RCS CHECKOUT” to “Verify following switches,” and those switches are “GUIDANCE CONTROL, PGNS;” third line, “ATTITUDE CONTROL (3)” to “MODE CONTROL” now; and then “MODE CONTROL (BOTH)” to “AUTO” and ACA PROP, LMP ENABLE; ACA/4 JET, LMP ENABLE; and TTCA/TRANSLATION, LMP ENABLE.

Charlie Duke

Roger. Now stand by 1.

Jim Lovell (CDR)

Okay. Hand me the eyepiece. I got Scorpio.

Fred Haise (LMP)

Where's the other one? I'll put it back in here.

Charlie Duke

Hello, Aquarius. Houston. On activation page 16, if you are ready. Over.

Fred Haise (LMP)

Okay. Stand by just 1, Charlie. Jim's going to fish around and see if he's got—he thinks he's got Scorpio. I'm the AOT now. Okay, Charlie, go ahead. I'm on 16 now.

Charlie Duke

Okay. Fred. On page 16, perform the “Docked DPS BURN (PGNS),” that entire sequence down—down through the end of the page, except cross out that “CSM Maneuver to Burn Attitude, then CMC—FREE.” Over.

Fred Haise (LMP)

Yes. I kind of deduced that one, Charlie. Page 16, “Docked DPS BURN (PGNS),” except we'll forget the CSM maneuver.

Charlie Duke

Okay. And you can forget the “APS Follow-up,” too. Okay, on page 17, perform all of the AGS entries and at 4 minutes, we got a change. First line, CB(16) INVERTER 3, CLOSE; line 2, scratch out “Select INVERTER 1.” At—proceeding on down the page, after “ATTITUDE MONITOR,” we'd like you to place the RATE SCALE to “25 degrees a second.” Okay, proceeding on down four more lines to “BALANCE COUPLE,” we'd like to turn “BALANCE COUPLE-OFF.” That's to keep the upfiring jets off of the CSM, in case we have to damp any rates in AGS, though we don't think we will. Then perform the rest of that page as written. Over.

Fred Haise (LMP)

Okay, on page 17. Do the AGS load at minus 4 minutes; it's CB(11), INVERTER 2, CLOSE, and scratch “Select INVERTER 1.” RATE SCALE changed to “25 degrees a second.” “BALANCE COUPLE,” we'll turn “OFF;” and, incidentally, on the AGS dampen rates point, it brings up the discussion we'd had before, Charlie, on takeovers. You might discuss what it's going to cost us DELTA-V-wise, if we get a control problem, to just shut her off and it take 30 minutes to regroup for a good manual burn.

Charlie Duke

Fred, we already got that story for you, pretty well in hand. We're reviewing it right now. And I'd like to defer that question until later on. Basically, we're just going to shut down and take what we got, and we got a midcourse of about—the maximum of 5 foot per second, anywhere in the burn to get back to free return. That—that's basically the story. We'll give you the mission rules for this burn momentarily. I'd like to proceed on to page 18, at minus 1 minute, scratch “MASTER ARM—ON.” Stand by.

Fred Haise (LMP)

Okay, on page 18, and I've already done that at 1 minute; “MASTER ARM—ON,” I'll scratch —

Jim Lovell (CDR)

— Slipped that … and I won't have anything to do —

Fred Haise (LMP)

— I've already scratched “CB(16) ABORT STAGE—CLOSE” for the previous burn.

Charlie Duke

Okay. We want you to close the CB(16) ABORT STAGE. Over.

Fred Haise (LMP)

Okay. You got some special reason for that?

Charlie Duke

Yes, sir. We like—In case we don't get a manual ON—I mean, an AUTO ON, we're going to back up using the abort stage in the descent-engine command override at ignition plus 1 second. Backing up to page 17, at minus 4 minutes, you read “CB(11) INVERTER 2,” it should be “CB(16) INVERTER 2.” Over.

Fred Haise (LMP)

Okay, I got you, Charlie. 17, “CB(16) INVERTER 2, CLOSE.”

Charlie Duke

Okay, back to page 18. We'll continue on as is at 30 seconds, 10 seconds, 7 seconds, minus 5 seconds. At “ignition,” no ignition and we'll add here, “no ignition, START pushbutton—push; still no ignition, DESCENT ENGINE COMMAND OVERRIDE, ON.” Over.

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Spoken on April 14, 1970, 9:39 p.m. UTC (51 years, 7 months ago). Link to this transcript range is: Tweet

Jim Lovell (CDR)

I got it out there, but I can't get to see it closer.

Fred Haise (LMP)

Okay, on channel—on page 18, right on down the line, everything holds until after “ignition”; “if no ignition, START pushbutton—push; still no ignition, DESCENT ENGINE COMMAND OVERRIDE switch ON.”

Charlie Duke

Okay, good readback, Fred-o. At plus 15 seconds, scratch “MASTER ARM—OFF;” and at—proceeding on down to “At Engine Cutoff,” it's—after the “MODE CONTROL: PGNS to ATT HOLD,” we'd like a “VERB 76,” and the “Damp Excessive Rates Via the LM Y, Z Translation.” Over.

Fred Haise (LMP)

Okay, scratch “MASTER ARM—OFF” at plus 15, and “At Engine Cutoff” after “MODE CONTROL: PGNS—ATT HOLD,” we want a “VERB 76 ENTER,” and “Damp Excessive rates Via LM Y, Z translation.” And a question on the—propellant quantity, we expect it to get down below 37 percent on this burn. Does that compare with that burn time when you get down to it.

Charlie Duke

That's negative. At this—this burn, we're looking at—not reaching 37 percent, so I don't think we'll have to perform that step. We will verify that for you. Okay. One other statement: “At Engine Cutoff, if manual start, then at 30 feet per second to go, throttle to 40 percent. At DELTA-V equals zero, stop pushbutton, push.” Over.

Fred Haise (LMP)

Okay, Charlie. If a manual start, that was throttle to 40 percent at—Was that 30 foot per second to go?

Charlie Duke

That's affirmative. At 30 foot per second to go.

Fred Haise (LMP)

Okay. Then it's stop pushbutton at VGO equals zero?

Charlie Duke

That's affirmative. What we want to do, if we got a manual start, we're going to have to shut down manually, and, to get a better guided cut-off at 30 foot per second to go, we want you to throttle at 40 and acceleration is within reason there, and we feel like we can get a good manual cut-off. Over.

Charlie Duke

Okay. Now, Fred, that was good in the checklist. That's all. We'll have the powerdown checklist for you momentarily, and we'd like to ask you if you plan to use the DPS burn card. If you do, we have some changes to that. Over.

Fred Haise (LMP)

Okay. Let me get ahold of this … right now.

Charlie Duke

Let me know when you are ready to copy. Over.

Charlie Duke

Okay. The first two lines are okay. CB—third line, CB(11) and (16): STAB/CONTROL, all CLOSED except CB(11) AEA, OPEN; ABORT STAGE, OPEN; AELD, OPEN. CB(16) AELD, OPEN. Over.

Fred Haise (LMP)

Okay, on the DPS burn card, third line should read CB(11) and (16): STAB/CONTROL CBs all CLOSED, except CB(11) AEA, OPEN; ABORT STAGE, OPEN; AELD, OPEN; CB (16) AELD, OPEN.

Charlie Duke

Okay. Good readback. Proceeding on down the page. “BALANCE COUPLE” switch, “BALANCE COUPLE OFF.” Okay, down to the TTCA—it's the last line before minus 2 minutes—“TTCA COMMANDER THROTTLE, MINIMUM; LMP TTCA to JETS.” At minus 2 minutes, scratch “400 plus 1.” At minus 1 minute, scratch “MASTER ARM, ON.” At minus 10 seconds, add “MANUAL ULLAGE.” At plus 5 seconds, scratch “DESCENT ENGINE COMMAND OVERRIDE, ON;” add “TTCA, 40 percent.” Okay, the same comments apply about the manual start: “At the ignition time, if no start, manual START pushbutton, push; if still no start, DESCENT ENGINE COMMAND OVERRIDE, ON.” And the same comments apply to shutting down at manual start. Over.

Fred Haise (LMP)

Okay. The same comments. I'll start at the top again here. Okay. “BALANCE COUPLE” should be changed to “OFF.” Under TTCA, it should be “LMP TTCA” to “JET.” Scratch “400 plus 1” at minus 2; scratch “MASTER ARM, ON” at minus 1. Add at minus 10 seconds “MANUAL ULLAGE”; add ignition—can add the comment about “If no start, START pushbutton, push; still no start, DESCENT ENGINE COMMAND OVERRIDE, ON.” At the plus 5-second point, scratch “DESCENT ENGINE COMMAND OVERRIDE, ON,” and add “TTCA to 40 percent,” and the same comment applies at engine stop to perform.

Jim Lovell (CDR)

We really don't use this card at that time.

Charlie Duke

Roger, Fred-o. Now we aren't—also at minus 30 seconds, we aren't looking at an AGS burn so you can scratch “ABORT pushbutton, push,” and at DELTA-V equal to zero, scratch “ABORT pushbutton, reset.” Over.

Fred Haise (LMP)

Okay. Minus 30 for AGS burn, “ABORT pushbutton, push” is scratched, and at DELTA-V equals zero, “ABORT pushbutton, reset” is scratched.

Charlie Duke

Okay, you got it, babe. We'll have some mission rules for you momentarily, and the powerdown checklist and also a PTC setup. Over.

Charlie Duke

Go ahead, Jim. Over.

Jim Lovell (CDR)

Roger. Be advised I'm now seeing Antares and Nunki in the AOT, and I just wanted to know whether you want me to try to do a P52.

Charlie Duke

Roger. Stand by. We copy the stars you are seeing. Stand by on a P52.

Fred Haise (LMP)

Not very far apart. Put the card back up, Jim —

Jim Lovell (CDR)

It's better than Antares and Shaula.

Fred Haise (LMP)

Yes. Sure is. That's right.