Jim Lovell (CDR)

Jack's dosimeter—Jack's dosimeter is reading 02026.

CapCom

Okay. We got it.

Jim Lovell (CDR)

It might be interesting that just after we went to sleep last night we had a MASTER ALARM and it really scared us. And we were all over the cockpit like a wet noodle.

CapCom

(Laughter) Sorry it wasn't something more significant. I've also got a procedure for you on that H2 tank; simple thing after you get done stirring up the cryos.

Unidentified crew member

(Music—With Their Eyes on the Stars)

CapCom

That was beautiful. What was it?

Jim Lovell (CDR)

A little of “With Their Eyes on the Stars” to wake up to.

CapCom

Sounds like all the comforts of home. Have you guys got a flower on your breakfast table?

Joe Kerwin (CAPCOM)

13, this is Houston. Go.

Jim Lovell (CDR)

Roger, Joe. We're standing by for that P37 block data if you have it for us.

Joe Kerwin (CAPCOM)

Okay. Got it right here, Jim, and it follows. This is the P37 pad for lift-off plus 60. The reason for the update is for weather avoidance in the MPL at 119 hours. It's the same one we passed you yesterday, and it's the same weather, but we still don't expect a problem at the end of the mission. GETI is 060:00, DELTA-VT 6079, longitude minus 153, GET 400K 118:04. Over.

Jim Lovell (CDR)

GETI of 060:00, 6079, minus 153, 118:04.

Joe Kerwin (CAPCOM)

Roger. That's correct. I've got a consumables update for you, Jim, if you're ready for that.

Joe Kerwin (CAPCOM)

Okay. As of 47 hours, RCS total 1096, quad Alfa 270, Bravo 278, Charlie 270, Delta 278, and the H2 — They gave me the H2s in percent, 76 percent; and on the O2 we have 81 percent. However, we show the O2 tank 2 reading off-scale high now. We're quite sure it's a sensor failure. We'd like you to verify it with your onboard reading.

Jim Lovell (CDR)

Joe, we confirm. Our gage reading is—on the number 2 O2 tank is reading off-scale high now, but Jack just tells me that it was okay when we first looked at it this morning.

Joe Kerwin (CAPCOM)

We verify that. At 46:45 we had 82 percent and apparently when he stirred the, the cryos, the sensor broke.

Joe Kerwin (CAPCOM)

So it's no problem. You're above nominal on all your consumables. On the H2 tank problem, we have a procedure that we'd like you to carry out which is simply turning the H2 tank 2 heaters to OFF at this time, and we want to see whether that won't solve the problem of the tank pressure setting off caution and warning. We want to look at it that way for a few hours.

Jim Lovell (CDR)

Okay. You want both H2 tank 2 heaters to OFF. Is that correct?

Joe Kerwin (CAPCOM)

That's negative; just tank 2. We want tank 1 to stay in AUTO.

Jim Lovell (CDR)

Okay. Tank 2 heaters off at this time.

Joe Kerwin (CAPCOM)

Okay. Good deal. That's been the high tank and apparently while waiting for that pressure switch to close, to start the heater cycle, the tank 1 pressure has been dropping even a little bit lower and just setting off caution and warning, so we feel if we turn off the tank 2 heater and let tank 1 activate the heater cycle, we won't get into the caution and warning range.

Joe Kerwin (CAPCOM)

Okay, Jim. At your convenience we'd like P00 and ACCEPT. We're ready for—to uplink your state vector now since we will not do midcourse 3. Over.

Jim Lovell (CDR)

Roger. You're in P00 and ACCEPT, no midcourse 3, and we're all set for a state vector update and I'm giving you the LM/CM DELTA-P here shortly.

Joe Kerwin (CAPCOM)

Okay. Good deal. And I have flight plan updates for you later, at your convenience.

Jim Lovell (CDR)

Houston, Apollo 13. The LM/CM DELTA-P is 1.0 psi.

Joe Kerwin (CAPCOM)

Copy, 1.0, Jim.

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Spoken on April 13, 1970, 6:51 p.m. UTC (51 years, 7 months ago). Link to this transcript range is: Tweet

Jim Lovell (CDR)

Houston, Apollo 13. I'm about ready for any flight plan updates that you have.

Joe Kerwin (CAPCOM)

Okay, 13. To start off with, got a minor procedural change for Jack on his next P52, if he's ready to listen to that.

Jim Lovell (CDR)

Okay. Jack's still off COMM. We'll hold off on that a little bit and then we'll pick it up when he gets on COMM.

Joe Kerwin (CAPCOM)

Okay; fine. I've got two updates for you, Jim. One is a procedure for looking for Comet Bennett at about 49:45, and I'll wait till Jack gets up before passing you the details on that. The other update is concerned with going into the LM 3 hours early, and I think Vance mentioned to you last night that this was a possibility, that we'd like to look at the SHe tank pressure early. And since we're not going to do midcourse 3, we'd like LM entry at 55 hours. Is that okay with you?

Jim Lovell (CDR)

Okay. Right, that's fine with us. We'll move up LM entry to 55 hours.

Joe Kerwin (CAPCOM)

Okay. I've got some details on the flight plan for you as follows. Of course, since there's no MCC-3 you'll be deleting all the midcourse 3 stuff including the—the P52, which is called out at about 54-1/2, and we'll be slipping that until later, which I'll—which I'll tell—which I'll tell—which I'll tell you in a minute. Okay. Then you—we want to move the battery charge up 3 hours to about 52:30. And we want to move the—moving the LM tunnel vent valve to LM/CM DELTA-P up 3 hours to 52:45, and at that point you can simply go to the 57-hour point in the flight plan and change your number from 57 hours to 54 hours and start through that. In the remarks section at about 57:50 it says, “O2 fuel cell purge and waste water dump,” here. If not performed earlier, we want you to do that at 54 hours and 50 minutes. The TV pass then, will be at 55 hours to 55:30. You'll go right through the LM Activation checklist stuff. I'm losing you; let's wait a minute.

Joe Kerwin (CAPCOM)

13, Houston. How do you read me?

Joe Kerwin (CAPCOM)

13, Houston. You back with us?

Joe Kerwin (CAPCOM)

Apollo 13, Houston. Are you back with us?

Joe Kerwin (CAPCOM)

Okay. I've gone through the battery charge, the LM vent valve, the fuel cell purge, and then stop PTC at 55 hours, and your roll attitude there will be 285 degrees, which is per the flight plan. The high gain antenna angles are slightly different, pitch 23 and yaw 267 degrees. The TV pass till 55:30, the standard LM activation except for some special steps we'll give you to take a look at SHe tank pressure, which I don't have yet. Restart PTC at about 56:30 or whenever you're through with the LM activities, and after that, at your convenience, we'd like you to—to do the P52 option 3 that we cancelled at 54-1/2 hours. Over.

Jim Lovell (CDR)

Okay. That last comment was that we'll do the P52 after we start PTC at about 56:30.

Joe Kerwin (CAPCOM)

That's right. Any time after that; it's not time critical.

Jim Lovell (CDR)

Okay. Let's see if I have some of this, Joe. Around 52:30 we're to do the battery charge on BAT—battery B.

Jim Lovell (CDR)

And then about 52:40 we're going to do the LM tunnel vent valve, and the LM/CM DELTA-P which has been written up at 55:40.