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Vance Brand (CAPCOM)
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Roger, You're coming in a little weak. Have a recommended roll rate for this PTC, if you could copy.
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Vance Brand (CAPCOM)
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Okay. Recommend that you put in R1 the following: 03750, and that should give you exactly a rate of 0.3 degrees per second. Over.
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Jack Swigert (CMP)
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Hey, Vance, would you monitor our rates and kind of give an idea of when you think they're stable enough to start PTC.
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Vance Brand (CAPCOM)
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Roger, Jack. We'll take a look and let you know as soon as they look stable enough.
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Jack Swigert (CMP)
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Have they come up with an idea of how much fuel I used on the docking and also the P23 session at 5 hours or 6 hours.
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Vance Brand (CAPCOM)
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Okay. It's looking good so far as RCS consumables are concerned, Jack. You're standing about 20 pounds above the curve right now. Looking at the TD&E, you expended 65 pounds or—Stand by—55 pounds, correction on that.
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Vance Brand (CAPCOM)
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And 14 pounds on P23s. You used a little more out of quad A than out of the others.
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Jack Swigert (CMP)
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Hey, could you say again the TD&E fuel? We've got a different—we all heard different things.
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Vance Brand (CAPCOM)
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Okay, Jim. Your rates look good. It's okay to start the roll again, if you'd like.
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Fred Haise (LMP)
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Okay. Ready for a little count here, Vance, and I'll shoot another picture. We found the Earth again.
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Vance Brand (CAPCOM)
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Jim, Houston here. Two items: first of all, your PTC is looking very good and it should carry you through the night; second point, have a procedure to give you, if you're ready to copy. We'd like to set three bits in the computer, and I'll explain why.
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Fred Haise (LMP)
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Go ahead, Vance, we're ready to copy.
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Vance Brand (CAPCOM)
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Okay. The procedure is as follows: VERB 25, NOUN 07, ENTER; 1331, ENTER; 7, ENTER; and ENTER. Explanation as follows. During the P23s, there was one time when VERB 37 was entered into the computer at about 16 seconds after the OPTICS ZERO switch was flicked to ZERO. This is a very uncommon anomaly in that, if you do this during—0.4-second interval at around 16 seconds after you zero the optics, some OPT-mode bits are reset; and this would mean that, if you had a OCDU fail, it wouldn't be indicated; so all this procedure is doing is setting these three bits back again where they should be.
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Vance Brand (CAPCOM)
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Yes. Actually slower or faster, either one, I guess. Well, yes, slower. It's a very unusual thing to have that happen.
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Fred Haise (LMP)
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Okay, Vance; we've completed that procedure, and let me know if everything was okay.
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Vance Brand (CAPCOM)
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Okay, thank you. We'll let you know if anything isn't okay. I'm sure it's good now.
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Vance Brand (CAPCOM)
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And, 13, Houston. If you would like, we can let you know about every 2 minutes before the Earth should be coming into your window. We think we've got it pegged down pretty well now, and you won't have to look for it so much. You want that?
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Vance Brand (CAPCOM)
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Okay.
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Vance Brand (CAPCOM)
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It's time for Fred to start looking for the Earth, should be coming by in about a couple of minutes.
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Fred Haise (LMP)
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Yes. I guess so. In a minute, you're going to hear my kitchen timer ding, and that also says the Earth is there.
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Jack Swigert (CMP)
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Okay, Vance, we did another EMS null bias test and the—it went from 100.0 to 101.8 in 100 seconds.
Spoken on April 12, 1970, 4:37 a.m. UTC (54 years, 6 months ago). Link to this transcript range is: Tweet
