Spacelog Apollo 13

Roger.

Yes. That jolt must have rocked the sensor on—see now—O₂ QUANTITY 2. It—was oscillating down around 20 to 60 percent. Now it's fullscale high again.

Roger.

And, Houston, we had a RESTART on our computer and we had a PGNCS light and the RESTART RESET.

Roger. RESTART and a PGNCS light. RESET on a PGNCS, RESET —

Okay. And we're looking at our S—SERVICE MODULE RCS HELIUM 1. We have—B is barber poled and D is barber poled, HELIUM 2, D is barber pole, and SECONDARY PROPELLANTS, I have A and C barber pole. BMAG temperatures?

Okay, AC 2 is showing zip. I'm going to try to reconfigure on that, Jack.

Roger.

Yes. We got a MAIN BUS A UNDERVOLT now, too, showing.

MAIN A UNDERVOLT.

It's reading about 25-1/2, MAIN B is reading zip right now.

And, Houston, Odyssey.

Stand by 1, Jim.

13, Houston. We'd like you to attempt to reconnect fuel cell 1 to MAIN A and fuel cell 3 to MAIN B. Verify that quad Delta is open.

Okay, Houston. I'm showing—I tried to reset and fuel cell 1 and 3 are both showing gray flags, but they are both showing zip on the flows.

Okay, Houston. Are you still reading 13?

That's affirmative. We're reading you. We're trying to come up with some good ideas here for you.

Okay. Let me give you some reading … in the interim to help MAIN A voltage, Jack. I've got BUS TIE AC on.

Say again, Fred.

In the interim, to help out MAIN A voltage, I've got MAIN BUS TIE BAT AC on. Or would you rather accept the 25 volts we are seeing on MAIN A?

Okay. BUS TIE AC on.

13, Houston. We need OMNI Charlie, please.

You got it.

13, Houston. We'd like you to verify couple of readings for us. We would like the nitrogen pressure on fuel cell 1. We need the oxygen pressure on fuel cell 2.

Okay. Nitrogen on 1 and oxygen on 2. Is that correct?

Negative. Oxygen on 3.

Okay.

Okay. The systems test 1-A says zip.

And 2 Baker, which is 3 oxygen, says 0.6.

2 Baker says 0.6, and say again the other one.

Fuel cell 1 nitrogen reads zero.

Roger. Zero.

13, Houston. We'd like you to open circuit fuel cell 1; leave 2 and 3 as is.

Okay. I'll get to work on that.

And, Jack, our O₂ quantity number 2 tank is reading zero. Did you get that?

O₂ QUANTITY number 2 is zero.

That's AC, okay. Yes, that's good AC and it looks to me, looking out the hatch, that we are venting something. We are venting something out into the—into space.

Roger. We copy your venting.

It's a gas of some sort.

Okay. Fuel cell 1, you just wanted it off the line now, Jack, is that right?