Spacelog Apollo 13

Okay. I just got a MASTER ALARM and MAIN BUS A UNDERVOLT. And I'm starting to power down, now. —

We've lost—The only advantage to doing it early; if we can power back—the LM back down. The only advantage doing it early is you can do a big burn now and a midcourse and then power the LM down. Otherwise, we got to keep the LM powered up clear until we get around the Moon. Plus it would be inside on the burn. I just hope the G&N hangs up on—hangs in on this one—I'd sure hate to do that one manual.

Oh boy.

Odyssey, Houston. Couple circuit breakers for you. On panel 276, on our INSTRUMENTATION POWER CONTROL, open CB number 3 and number 4.

Okay, Houston. Panel 276, INSTRUMENTATION out and reset —

— a lot of light.

— CB-3 and CB-4 are open.

What?

That's affirmative, Odyssey. And also get your SCS electronics package and power off, and your FDAI POWER/GPI off, and your AUTO jet SELECT, all 16 off.

Okay. Well, wait a second. Let me—Let me get the CMC power down.

Roger, Jack.

I wonder how much that's going to bring this up, here.

Jack, while he's doing that, copy down what you just said again. I want to write it down.

Aquarius, we need to get your sublimator powered up, Activation page 20 and Activation page 21, step 3. Over.

Roger. Activation page 20 and Activation page 21, step 3, sublimator.

Roger.

That's Activation, page 20? Okay, Jack. Now I have to power down IMU. I have no control at all. I'm going to turn my 16 jets off, Say again the other things you wanted?

Okay, Jack. We'd like you to turn off your O₂ tank 2 heaters and fans. Correction—tank 1. Turn the fans and heaters off.

Okay. And, Jack, can we turn on the FDAI circuit breakers so we could have a ball to see if we go to gimbal lock or not?

Stand by.

Houston, he's going to give a 16 NOUN 20, Jack. And, okay, I've got O₂ heaters and fans off in tank 1.

And, Jack, let me know if you get close to gimbal lock, would you?

Jim, we don't want you to power down the ball in the LM. We wanted you to power down the ball in the CSM.

Jack, they haven't powered down —

Jack, we don't have the balls powered up in the LM.

I have the CMC and IMU in the command module is powered down. The heaters are out.

And the EVAP flow valve, that's open now, and I've undone my suit hoses here and opened up the suit flow valves; so, we got air flowing in the LM now.

Okay, Jack. Will you say again the SCS items you wanted me to power down?

Okay, Houston. Do you read Odyssey?

Hello, Houston. How do you read?

His gimbal lock and ours are different, Jim.

Apollo 13, Houston. Say again, please. You were cut out.

Okay, Jack. Do you want me to proceed by the SCS powerdown checklist? I did not copy the SCS items you wanted me to power down.

Okay, Odyssey. We want to go SCS ELECTRONICS POWER, OFF.

Okay. It's done.

FDAI POWER/GPI, OFF. AUTO jet SELECT, 16 —

That's done.

— OFF. And all your ROTATIONAL CONTROL POWER, OFF.

It's done. ROTATION CONTROL POWER, DIRECT, and AUTO …, OFF.

Okay, Jack. Tell me there. We need to know when we're getting close to gimbal lock in the LM. We have no balls right now.

Okay. We want you to power up your eight-ball. We want you to get your RCS heaters on. Pressurize the RCS and open up the MAIN SOVs. Over.

Okay, Jack. I got two commander FDAI breakers in, AC and DC, and the two GASTA breakers in AC and DC and next you'll want the RCS heaters all on with the—pressurize the RCS and then the MAIN SOVs open. And I think they're already open.