Fred Haise (LMP)

Key moment "Houston, we've had a problem.": Okay, Houston —

Jack Swigert (CMP)

I believe we've had a problem here.

Jack Lousma (CAPCOM)

This is Houston. Say again, please.

Jim Lovell (CDR)

Houston, we've had a problem. We've had a MAIN B BUS UNDERVOLT.

Jack Lousma (CAPCOM)

Roger. MAIN B UNDERVOLT.

Jack Lousma (CAPCOM)

Okay, stand by, 13. We're looking at it.

Fred Haise (LMP)

Okay. Right now, Houston, the voltage is—is looking good. And we had a pretty large bang associated with the CAUTION AND WARNING there. And as I recall, MAIN B was the one that had had an amp spike on it once before.

Fred Haise (LMP)

In the interim here, we're starting to go ahead and button up the tunnel again.

Fred Haise (LMP)

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.

Jim Lovell (CDR)

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

Jack Lousma (CAPCOM)

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

Jim Lovell (CDR)

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?

Fred Haise (LMP)

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

Fred Haise (LMP)

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

Fred Haise (LMP)

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

Jim Lovell (CDR)

And, Houston, Odyssey.

Jack Lousma (CAPCOM)

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.

Fred Haise (LMP)

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.

Fred Haise (LMP)

Okay, Houston. Are you still reading 13?

Jack Lousma (CAPCOM)

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

Fred Haise (LMP)

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

Fred Haise (LMP)

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?

Jack Lousma (CAPCOM)

13, Houston. We need OMNI Charlie, please.

Jack Lousma (CAPCOM)

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.

Fred Haise (LMP)

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

Fred Haise (LMP)

Okay. The systems test 1-A says zip.

Fred Haise (LMP)

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

Jack Lousma (CAPCOM)

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

Fred Haise (LMP)

Fuel cell 1 nitrogen reads zero.

Jack Lousma (CAPCOM)

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

Fred Haise (LMP)

Okay. I'll get to work on that.

Jim Lovell (CDR)

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

Jack Lousma (CAPCOM)

O2 QUANTITY number 2 is zero.

Jim Lovell (CDR)

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.

Jack Lousma (CAPCOM)

Roger. We copy your venting.

Jim Lovell (CDR)

It's a gas of some sort.

Fred Haise (LMP)

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

Jack Lousma (CAPCOM)

We just wanted you to open the circuit on fuel cell 1.

Fred Haise (LMP)

Okay. She's off the line.

Jack Lousma (CAPCOM)

13, Houston. We see you getting close to gimbal lock there. We'd like you to bring up all quad Cs on MAIN A, quad C-1, C-2, C-3, C-4 on MAIN A, and also bring B-3 and B-4 up on MAIN A.

Jack Lousma (CAPCOM)

13, Houston. Do you read?

Jack Lousma (CAPCOM)

Okay. Can you tell us anything about the venting, where it is coming from, what window you see it at.

Fred Haise (LMP)

It's coming out of window 1, right now, Jack, and could you give me the thrusters again?

Jack Lousma (CAPCOM)

We'd like—on MAIN A, we'd like Charlie 1, 2, 3, and 4. Also Bravo 3 and 4 on MAIN A.

Jack Lousma (CAPCOM)

Okay, 13; this is Houston. We'd like you to go to your G&C checklist, the pink pages, 1-5. Do powerdown until we get a Delta of 10 amps. Over.

Jim Lovell (CDR)

Okay, Jack, say again that—… for the powerdown; it's not in the pink pages, the 1-5.

Jack Lousma (CAPCOM)

Okay. We'd like you to go down that powerdown procedure until you get a Delta of 10 amps. Over.

Jack Lousma (CAPCOM)

13, Houston. Did you copy our powerdown request?

Jack Swigert (CMP)

Roger, Jack. We're—yes, we're doing it right now.

Jim Lovell (CDR)

Where did you say that was located, Jack?

Jack Lousma (CAPCOM)

That's in your systems checklist, page 1-5.

Jack Lousma (CAPCOM)

And, 13, you might also check for those pages in your launch checklist. They're emergency pages; pink pages, 1-5, and we'd like you to power down until you get —

Jack Swigert (CMP)

Okay. That was in the launch checklist, Jack.

Jack Lousma (CAPCOM)

Roger. Power down until you get an amperage of 10 amps less than what you got now. Over.

Fred Haise (LMP)

Okay. Jack. Are you happy with the amps we have now?

Jack Swigert (CMP)

Okay, Jack, and on this page 1-5, we proceeded right down the list, all the way down; we're right now at BMAG number 2 is in WARM UP.

Jack Lousma (CAPCOM)

Roger. We copy BMAG 2 in WARM UP. We'll follow you through.

Jack Swigert (CMP)

Okay, and something is giving us a reach, Jack, both in pitch and roll, so I'm suspecting that maybe it's whatever it is that's venting back there. I've had to use DIRECT in order to stabilize this, and as soon as I do, we're starting to pick up rates again. Can you pick up any jets firing?

Jack Lousma (CAPCOM)

Stand by. What direction are your rates in, Jack?

Jack Swigert (CMP)

It's negative pitch and negative roll.

Jack Lousma (CAPCOM)

13, Houston. We need to get some more instrumentation up. We'd like you to put INVERTER 1 on both AC BUSES. Over.

Fred Haise (LMP)

Okay. Okay, you got INVERTER 1 on both AC BUSES now. And Jack, one of the items that we turned off was the—all the fuel cell pumps. Okay, and you might let us know when fuel cell 2 needs its pump back; we ought to take care of that guy.

Jack Lousma (CAPCOM)

Roger. Okay, Fred, we want FUEL CELL 2 PUMPS to AC1, please.

Jim Lovell (CDR)

FUEL CELL 2 to AC1. Roger.

Jack Lousma (CAPCOM)

OMNI Charlie, please, 13.

Jack Lousma (CAPCOM)

Okay, 13. We've got lots and lots of people working on this; we'll give you some dope as soon as we have it, and you'll be the first one to know.

Fred Haise (LMP)

Okay, Jack, and the weird configuration we're sitting in now is we have the hatch installed, we still have the probe and drogue inside the command module, and we're going to stay in this situation until you—kind of give us an okay to reinstall the probe and drogue.

Jack Lousma (CAPCOM)

Roger. We'll give you an answer.

Fred Haise (LMP)

Or, if necessary, to use the LM consumables.

Jack Lousma (CAPCOM)

13, we'd like to have you put thruster Alfa 3 on MAIN A, please.

Fred Haise (LMP)

Okay, Jack, are you monitoring the quad temps in quad A—package temps?

Jack Lousma (CAPCOM)

13, this is Houston. We'd like to power down just a little bit more, so let's get BMAG 2 OFF; and make sure your lights are down. Over.

Jim Lovell (CDR)

Okay. The lights are down, and BMAG 2's going from STANDBY to OFF.

Jack Swigert (CMP)

Okay, Jack, now I've got a rate -

Jack Lousma (CAPCOM)

— we'd like you to open circuit fuel cell 3.

Jack Swigert (CMP)

Open circuit fuel cell 3.

Jack Swigert (CMP)

Okay, fuel cell 3 is off the line now.

Jack Lousma (CAPCOM)

And 13, Houston. We'd like you to turn all your Bravo thrusters OFF; and put all your Delta thrusters on MAIN A, please.

Jim Lovell (CDR)

All Delta thrusters on MAIN A and all Bravo thrusters OFF. Roger.

Jack Lousma (CAPCOM)

13, Houston. Turn BATTERY A OFF —

Unidentified crew member

Jack Swigert (CMP)

That's right; we were pulling current all the time.

Jim Lovell (CDR)

BATTERY A OFF. Roger.

Jim Lovell (CDR)

I'm transmitting. I don't have any current now.

Jack Swigert (CMP)

Hey, it's off—it's off. They—they killed the bus completely now.

Jack Lousma (CAPCOM)

13, Houston. We'd like you to isolate your O2 surge tank. Over.

Jack Swigert (CMP)

Surge tank off now, Jack? Okay, Jack, are you copying—O2 tank 1 cryo pressure?

Jack Lousma (CAPCOM)

That's affirmative. And we're trying to get power to that tank. Stand by; we're working on it.

Jack Swigert (CMP)

Okay. We had a—SERVICE MODULE RCS B light, jack, due to package temperature.

Jack Lousma (CAPCOM)

SERVICE MODULE RCS B. We copy. No problem.

Jack Swigert (CMP)

Let's read you the lights we got on now; CRYO PRESS, FUEL CELL 1, FUEL CELL 3, MAIN BUS B UNDERVOLT, SUIT COMPRESSOR.

Jack Lousma (CAPCOM)

Roger, we copy them and we'd like to build up the pressure in O2 tank 1, so turn the heaters on manually; we'll watch the pressure for you.

Jack Swigert (CMP)

Okay, do you want to see —

Jack Swigert (CMP)

— We're going to get a MAIN BUS A UNDERVOLT, probably.

Jack Lousma (CAPCOM)

Roger. We realize that; we feel we can stand 5 more amps on it.

Jim Lovell (CDR)

Okay, heater on tank 1's ON.

Jack Lousma (CAPCOM)

13, Houston. We'd like you to additionally bring on the fans in O2 tank 1, and we can stand the additional amperage on that.

Jim Lovell (CDR)

Okay—bring up the fans on O2 tank 1.

Jack Lousma (CAPCOM)

13, Houston. We'd like you to check some circuit breakers on panel 226. CRYO O2 HEATER number 1 MAIN A, and check the three CRYO FAN MOTORS, TANK 1, three phases.

Fred Haise (LMP)

Okay, Jack. 226 is configured just like it should be. I got three REACS breakers and three RAD breakers open. All the rest are closed.

Jack Swigert (CMP)

Jack, looking outside, the number of particles has diminished greatly, almost ceased now, which indicates maybe what was venting has almost stopped.

Jack Lousma (CAPCOM)

Roger, Jack. Thank you. We copy.

Jack Swigert (CMP)

I'm still getting some rates in negative pitch, though.

Jack Lousma (CAPCOM)

And, 13, we'd like to verify that both BMAGs are off, please.

Jack Swigert (CMP)

Negative. We just have one BMAG. BMAG number 1 is still on.

Jack Lousma (CAPCOM)

Okay, Jack. Let's take BMAG 1 off.

Jack Swigert (CMP)

Okay. BMAG number 1 off now.

Jack Lousma (CAPCOM)

13, this is Houston. We'd like you to give us a survey of your displays on MDCs 1 and 2. Give us gage readings and talkbacks. Over.

Jim Lovell (CDR)

Okay. We'll start with display number 1.

Jack Swigert (CMP)

Okay, Jack. On MDC 1, there's nothing abnormal. All the rate indicators are zero. Ball number 2 is frozen, of course; we lost MAIN B. I've got—Ball number 1 appears to be working normally. Right now I'm sitting at roll 0, pitch 180, and yaw about 13 degrees. I'm going to try and hold 0, 180, and 0.

Jim Lovell (CDR)

Okay, Houston. The center panel—I'm looking at the RCS indicator A. We have a package temperature of about 180. Our helium pressure is 3900. I'm looking at fuel pressure of about 180 and percentage of about, I'd say 85 percent. B is about the same, except that that package pressure is 190. On quad C, we're looking about the same, except that the package temperature is 100. On quad D, we're looking at package temperature of 160. All other indications are about the same. CM pressure—RCS pressure is looking nominal. Helium pressure's up around 4000. And package temperature is about—a little less than 80 on ring 1 and about the same on ring 2.

Jim Lovell (CDR)

And the—talkbacks on the SM RCS, I've got HELIUM 1 now are all gray. HELIUM 2 are all gray. PRIMARY PROPELLANT all gray. SECONDARY PROPELLANT, I've got two barber pole, and A is barber pole, B gray, C barber pole, and D gray. Okay. On the ECS RADIATORS, barber pole is gray. On the—On the ECS, PRIMARY INDICATOR.

Fred Haise (LMP)

Okay, Jack. Starting at the top. Okay. The CRYO TANKS; H2 1 is reading 230 and the same for 2. Our O2 CRYO TANK 1 is—looks like it's barely holding its own at 300. And, CRYO TANK 2 is reading zip. Our quantities: H2 1 is reading 73, 2, 74. On the O2 side, we're reading O2 1 at quantity, 76; O2 pegged to full scale high. RAD TEMPs PRIMARY INLET, we're reading about 55; RAD OUT is reading about 30, and the SECONDARY OUTLET is reading—reading 52 degrees. And the EVAP OUT TEMP is 45, STEAM PRESSURE 0.17, and GLYCOL DISCHARGE 48. SUIT COMPRESSOR is reading zip. The ACCUM is reading 30; H2O WASTE is reading about 34; POTABLE's reading about 98; SECONDARY RAD INLET is reading about 71; and the RAD OUT is about 30; GLYCOL EVAP TEMP is reading 65, STEAM PRESSURE pegged full scale high; DISCHARGE PRESSURE 9 psi.

Jack Lousma (CAPCOM)

Excuse me, Fred; I'd like to butt in here a minute. We'd like to have THRUSTER C-1 off.

Jack Lousma (CAPCOM)

— my last copy is SECONDARY RAD IN.

Fred Haise (LMP)

Okay. Your SECONDARY RAD IN, I gave to you 70—about 72 degrees; the RAD OUT is about 30; the GLYCOL EVAP TEMP is reading about 65; STEAM PRESSURE full scale high, GLYCOL DISCHARGE PRESSURE about 9 psi. The ACCUM—SECONDARY ACCUMULATOR is about 30—34 percent. Our temperatures: SUITS showing about 52 degrees; CABIN about 58 degrees; pressures, SUIT reading 4.1, CABIN at 5. PARTIAL PRESSURE CO2 is up to little over 1, about 1.1. On the SPS side of the house, the temperature is 72 degrees, helium's reading 3500; N2 A is reading 2300; N2 B about 2450. And our ullage pressures: FUEL is reading about 165; OXIDIZER 170. Fuel cells: FUEL CELL 1, both CLOSED, they're zip; SKIN TEMP 405 degrees; CONDENSE EXHAUST is lower scale. FUEL CELL 2—right now we've got an O2 or an H2 FLOW reading of 0.13 to 0.14, and the O2 FLOW is right now pegged full scale high although it has been varying depending on thruster activity which has also given us MAIN BUS A under volts from a steady reading of about 1.1 up to full scale high. The TSKIN is about 445 and the CONDENSOR EXHAUST 17, correction, 180. Let's see if you want it on the DC indicator: FUEL CELL 1 is 0 amps; 2 is reading somewhere between 44 and about—oscillating 44 to 48 again depending on thruster activity.

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Spoken on April 14, 1970, 3:17 a.m. UTC (51 years, 7 months ago). Link to this transcript range is: Tweet

Fred Haise (LMP)

— is 0 amps. Say again, Jack.

Fred Haise (LMP)

Hello, Houston; Apollo 13. How do you read?

Jack Lousma (CAPCOM)

Okay, 13. This is Houston. It appears to us that we're losing O2 flow through fuel cell 3. So, we want you to close the REAC valve on fuel cell 3. It looks like fuel cell 1 and 2 are trying to hold up okay. You copy?

Fred Haise (LMP)

Are you saying fuel cell 1 and 2—1 and 2 are trying to hold up but we're leaking O2 out of fuel cell 3? And you want me to shut the REAC valve on fuel cell 3? Did I hear you right?

Jack Lousma (CAPCOM)

That's affirmative. Close the REAC valve on fuel cell 3.

Fred Haise (LMP)

Okay. I'll go to the SSR page. Do you want me to go through that whole smash for fuel cell shutdown? Is that correct?

Jack Lousma (CAPCOM)

Okay, 13. We want you to turn the inline heaters off on fuel cell 1. Then we want you to go through the fuel cell shutdown procedure on fuel cell 3. Read back.

Jack Swigert (CMP)

Okay. Shut down the inline heater on fuel cell 1. We're proceeding with the shutdown, special subroutine, for fuel cell 3.

Jack Lousma (CAPCOM)

Okay. You got OMNI Bravo and we'd like to have you verify that the tape recorder is off please.

Jack Swigert (CMP)

That's verified. Okay, Jack. I'm sitting here with an 0618 showing and I can't get rid of it. Oh, stand by just a —

Jim Lovell (CDR)

Okay. Fuel cell 3 REACs off, Houston.

Jack Swigert (CMP)

Okay, Jack. Step 2, special subroutine 1 for the fuel cell procedure, has been completed.

Jack Swigert (CMP)

Okay. Jack. I'd like to bring on jet A-4. I've got null on negative pitch control, and—negative pitch control, and right now neither DIRECT or AUTO coils.

Jack Lousma (CAPCOM)

Okay. You say no pitch in either DIRECT or AUTO? You want to bring on A-4?

Jack Swigert (CMP)

Yes. I've got a positive pitch rate and I can't stop it.

Jack Lousma (CAPCOM)

Okay, Jack. Bring A-4 on; stop the pitch rate.

Jack Lousma (CAPCOM)

And, 13, we need OMNI Charlie, please.

Jack Lousma (CAPCOM)

And, Fred, we would like to have you verify fuel cell reactants talkback is barber pole.

Fred Haise (LMP)

That's affirm. I watched it and it went barber pole as I threw the switch.

Jack Swigert (CMP)

Okay. Jack. Let me give you a thruster configuration right now. Able 1, Charlie 1, Able 2 are off. Charlie 2, MAIN A, all the thrusters that I call that are on are on MAIN A. Baker 1 off. Dog 1 on, Baker 2 off, Dog 2 on. Able 3, Charlie 3, Able 4, Charlie 4 on. Baker 3 off, Dog 3 on, Baker 4 off, Dog 4 on.

Jack Lousma (CAPCOM)

Okay, Jack. That thruster configuration looks okay.

Jack Swigert (CMP)

All right. Okay. Do you want some readings from the systems test meter regarding fuel cells?

Jack Lousma (CAPCOM)

Stand by 1 on that, Jack. Let me ask the EECOM.

Jack Swigert (CMP)

We've got some incompatibilities here.

Jack Lousma (CAPCOM)

Okay, 13. We'd like to have you give us those systems test readings on fuel cell 1 and 3, please.

Jim Lovell (CDR)

Okay. 1 and 3 coming up.

Fred Haise (LMP)

Okay. Jack, 1-A is reading, lower scale, 0; 1-B is reading. 3.45. Okay. You only want fuel cells 1 and 3. Okay. Ignore that 1-B reading. 1-C is reading 3.4. Now, 1-D is reading 2.4. 2-D is reading 0.25.

Jack Lousma (CAPCOM)

Roger, Is that 2 Bravo, Fred?