Spacelog Apollo 13

Apollo 13, Houston.

Go ahead, Houston.

Okay, to answer your question, Jim, that increase in pressure is normal, because it was just tracking an increase in cabin pressure.

Okay. Okay.

We're not thinking today.

And, 13, from Houston, it's okay with us if you want to move the O₂ fuel cell purge and the water dump up to this time. Over.

Okay. We'll work it in shortly. Thank you.

Right.

Apollo 13, Houston.

Go ahead.

Jim, recommend you stay in the PTC until we stop it for the TV at 55 hours, in case you were thinking of —

Go ahead, Houston.

Roger. Recommend you continue PTC until 55 hours. Over.

You were calling, Houston?

That's affirmed, Jim. How do you read now?

Okay. We read you loud and clear.

Okay. The only comment that we just made was that, in case you were thinking of stopping PTC, there's no need to stop it until 55 GET when TV starts.

Right. We'll stop it when we're setting up our TV.

Okay, Houston, the waste water dump and O₂ fuel cell purge are complete.

Okay, Houston, the LM/CM DELTA-P is constant. We're going to go ahead with hatch removal.

Houston. Roger.

Is that you, Jack?

Okay, Houston; 13.

Houston, go ahead.

Go ahead, 13.

Houston, Apollo 13.

This is Houston. Go ahead, 13.

Okay, Houston; Apollo 13.

Roger. Go ahead, 13.

Okay. The LMP has entered the LM.

Roger.

Is that Big John?

It sure is. How're you doing?

Fine.

Yes, you're doing great, man.

Thank you. I had a good CDR.

You're doing it on your own now.

Yes, it feels like I'm back at home, again, John, down in here.

Okay. Jack, how do you read?

Fred, Houston is reading you loud and clear.

Okay. I've got up through step 7 now, and I'm not getting much of a light in the helium indicator here. Why don't I review for you how we've proceeded, and you look at the procedure you gave me, and see if we've missed anything.

Roger. Go ahead.

Okay. We transferred to LM power and that looked okay. I'm staring at a CAUTION AND WARNING POWER light, and all the red flags; and we got both X LUNAR BUS TIE breakers IN. The UTILITY LIGHTING breaker is IN; then AC BUS B HELIUM PQS DISPLAY; the AC BUS B NUMERIC LIGHTING, and AC BUS B INVERTER 1 is—BUS TIE is CLOSED. Then I closed the INVERTER 1 breaker, and I've selected, on panel 16, and the SIGNAL CONSENSOR [sic] breaker is in; I've selected INVERTER 1 and put the HELIUM MONITOR switch to SUPERCRIT and I have no lights.

Okay, Fred, let us take a look at it.

I was wondering, do we need an A—do we need, possibly, in the—one of the ANUN/DOCK/COMPONENT breakers in?

Stand by 1.

Okay, Jack. Hold the phone. I forgot the rheostat was cranked all the way down on the ANUN/NUM and it's showing 720, which looks like a pretty good—pretty good number.

Roger. We copy 720. Thank you, Fred —

Flashed to 7—Okay, and it just flickered down to 710. It's kind of flickering between 710 and 720.

Roger. 710 to 720.

Okay, Fred. Those are good numbers, and we're not going to have to crank up the TM. That's the number we were looking for.

Very good. Okay. Do you want me to back out of this in reverse at least as far as getting this part of it powered down?

Stand by 1.

Fred, this is Houston. Go ahead and back out of this little test and proceed.

Okay. We're back on CSM power. The time was 54 hours 58 minutes 50 seconds.

Roger, Jack. 54:58:50. Thank you.

Okay, Houston, we'll try to pick you up on the high gain.

Roger.

And, 13, we're ready on the TV when you are.

This is 13. Say again, Houston.

13, we're ready on the TV when you are. Any time.

Okay, sounds good. With you in a minute, we're just cranking up high gain now.

Okay, Houston. How do you read us in the high gain?

We're hearing you 5 square, Jim, how me?

Okay. You're coming through okay.

As you were on that, Jim. We don't have you on high gain yet. We're still looking at you.

13, Houston. In this attitude, we'd suggest pitch 5, yaw 237 on the high gain. Over.

Okay, Jack. Can you—can you read the high gain now?

Affirmative, Jack. We've got you on a high gain and it appears to us that we're in wide beam—wide beam width.

Yes. We can't get it to come down to narrow. We tried to switch to AUTO track or REACQ, and it—yaw drives around from 270 to 0. And pitch goes from about 6 degrees around to 90. I'm trying—we're fitting it manual now at the angles that you gave us, and I'll try and get you in medium and narrow beam widths picking it up manually here.

Roger, Jack. Meanwhile, we'll look at the situation you describe there.

Okay. And it does it on both sets of servo electronic power.

Jack, what it looks like is that, when we hit 239 degrees at this attitude, it hit some sort of scan limit or something and drops off.

Roger, Jack; thank you.

Okay, I'm trying you in wide or medium beam width now.

Can you pick up the TV in this condition here at all?

Negative, Jack. We'll have to have the narrow beam width.

Okay. Can you give us, maybe, a slight maneuver?

Jack, we'd like you to check two high gain circuit breakers down in panel 25. Check your high gain group 2 and your high gain in the flight bus. Over.

Okay. Okay, Jack, they're both IN.

Roger.

13, we've got an attitude suggestion for you. We suggest that you go to roll 285 and try pitch 90 and yaw 0. Over.

Okay, Houston; Apollo 13. I think we've got high gain locked up now. Do you confirm?

We confirm that, Jim, we've got you locked up on the high gain and narrow beam.