Bruce McCandless (CAPCOM)

Tranquility Base, this is Houston. In the flight plan configuration, we show that the stability control circuit breaker ATCA on panel 16 should be open at this time. Over.

Buzz Aldrin (LMP)

Houston, Tranquility. Say again which one should be closed?

Bruce McCandless (CAPCOM)

Roger. Panel 16, row 2, STAB control ATCA, that is A T C A, and it should be open at this time. Over.

Buzz Aldrin (LMP)

Housquin—Houston, Tranquility. Do you have a way of showing the configuration of the engine arm circuit breaker? Over. The reason I'm asking is because the end of it appears to be broken off. I think we can push it back in again. I'm not sure we could pull it out if we pushed it in, though. Over.

Bruce McCandless (CAPCOM)

Roger. We copy. Stand by please.

Bruce McCandless (CAPCOM)

Tranquility Base, this is Houston. Our telemetry shows the engine arm circuit breaker in the OPEN position at the present time. We want you to leave it open until it is nominally scheduled to be pushed in, which is later on. Over.

Neil Armstrong (CDR)

Houston, Tranquility Base. The CDR's PRD reads 11014.

Buzz Aldrin (LMP)

Roger. LMP reads 09018. Over.

Michael Collins (CMP)

Houston, Columbia. Over.

Bruce McCandless (CAPCOM)

Columbia, this is Houston. Go ahead.

Michael Collins (CMP)

Roger, Bruce. When you get a few minutes could you give me some words on tomorrow's activities—when they're going to start?

Bruce McCandless (CAPCOM)

Columbia, Columbia, this is Houston. Over.

Bruce McCandless (CAPCOM)

Columbia, this is Houston. Over.

Bruce McCandless (CAPCOM)

Roger, Mike. Couple of quick flight plan update here. First off, we'd like to get an O2 fuel cell purge at time 113 30. You—Are you copying? Over.

Bruce McCandless (CAPCOM)

Secondly, we will return to the nominal timeline with your scheduled wakeup of 121 hours and 12 minutes. We sort of slipped by lithium hydroxide canister change number 9 during the EVA and EVA PREP. We'd like you to accomplish that now. The COMM for sleep will be the normal lunar COMM configuration, the RCS configuration. We're requesting you use quads Alfa and Bravo. A DAP data load for R2 should be 01111. Readback. Over.

Michael Collins (CMP)

Roger. Oxygen fuel cell purge at 113 30. Return to the nominal timeline at 121 hours wakeup. Lithium hydroxide change number 9 right now. Normal lunar COMM sleep configuration, I'm in that now. On the RCS, I understood before you wanted to load the DAP register 2 011000 which made sense, and then later to pitch only on quad A, enable all on quad B, and C and D off. But you don't want to do that any more, huh?

Bruce McCandless (CAPCOM)

Columbia. This is Houston. On your DAP load in R2, we're requesting a 0 an four 1's, that is, 01111. Over

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Michael Collins (CMP)

Load's going in right now.

Bruce McCandless (CAPCOM)

Roger. And you'll be enabling quads Alfa and Bravo on the AUTO RCS select switches. Disable Charlie and Delta.

Bruce McCandless (CAPCOM)

And we have a little less than 2 minutes to LOS. If you're still up, AOS next time around will be 114 04. Over.

Bruce McCandless (CAPCOM)

And, Columbia, if it's agreeable with you, we'd like you to stay awake until we have one successful reacquisition on the high gain antenna. And I guess you can plan on turning in shortly after AOS this next pass. Over.

Bruce McCandless (CAPCOM)

Tranquility Base, Tranquility Base, this is Houston. Radio check. Over.

Bruce McCandless (CAPCOM)

Roger. Reading you loud and clear. Just wanted to make sure we still had COMM.

Neil Armstrong (CDR)

Roger. We just finished up—we're just finishing up our eat period. Be ready to go back into PREP for DEPRESS.

Bruce McCandless (CAPCOM)

Roger.

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Spoken on July 21, 1969, 6:47 a.m. UTC (50 years ago). Link to this transcript range is: Tweet

Bruce McCandless (CAPCOM)

Tranquility Base, this is Houston. Over.

Neil Armstrong (CDR)

Roger. Go ahead, Houston.

Bruce McCandless (CAPCOM)

Roger. On your next depressurization, it's acceptable to use the overhead hatch dump valve in addition to or instead of the forward hatch dump valve to speed up the depressurization of the cabin. I have a T13 update for you, and if you could, sometime here, give us P00 and DATA; we'll uplink you a new CSM state vector. Over.

Bruce McCandless (CAPCOM)

Roger. Your T13 time is 124 22 02. Over.

Buzz Aldrin (LMP)

Roger. It's T13, 124 22—is that 02? Over.

Bruce McCandless (CAPCOM)

That's affirmative. That is 02. And do you have a time estimate for us until you're ready to start cabin DEPRESS? Over.