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CAPCOM
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Friendship Seven, Cap Com. Would you give us the difficulty you've been having in yaw in ASCS? Over.
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John Glenn
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Roger. This is Friendship Seven. I'm going on fly-by-wire so I can control more accurately. It just started as I got to Guaymas, and appears to be it drifts off in yaw, to the right at about 1° per second. It will go over to an attitude of about 20°, and hold at that and when it hits about a 20° point it then goes into orientation mode and comes back to zero, and it was cycling back and forth in that mode. I am on fly-by-wire now and controlling manually. Over.
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John Glenn
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Ah, this is Friendship Seven. Understand 1 Bravo is 01 plus 50 plus 00; 2 Charlie, correction 2 Bravo is 01 50 00, 2 Charlie is 02 plus 05 plus 59. Is that affirm?
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John Glenn
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This is Friendship Seven. What appears to have happened is, I believe, I have no one pound thrust in left yaw. So it drifts over out of limits and then hits it with the high thrust. Over.
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CAPCOM
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Roger, Seven, we concur here. Recommending you remain fly-by-wire.
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CAPCOM
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Seven, this is Cape. The President will be talking to you and while he is talking I'll be sending Z and R cal.
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John Glenn
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Roger. This is Friendship Seven, controlling manually on fly-by-wire, having no trouble controlling. Very smooth and easy; controls very nicely. Fuses are still the same on the left panel. Squib is, Squib is armed. Auto Retrojettison is off. ASCS is fly-by-wire, auto, gyro normal. All fuel, all “T” handles are in, Retro Delay is normal. I have beautiful view out the window of the coast at present time. Just departing. Can see the, way down across Florida. Cannot quite see the Cape yet.
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CAPCOM
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Roger.
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John Glenn
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Continuing with the report. No sequence panel lights showing. Only abnormal position. Landing bag is off. The EPI is indicating okay. Control fuel is 80 [percent] auto, 100 [percent] manual. Retrograde time set in is 04 plus 32 plus 28. Over.
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CAPCOM
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Say again, Seven.
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John Glenn
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Roger. I'll be out of communication fairly soon. I thought if the other call was in, I would stop the check. Over.
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John Glenn
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Roger. Continuing report. Cabin pressure 5.5 and holding nicely. Cabin air is 95 [degrees]; relative humidity, 20 [percent]; coolant quantity is 67 [percent]; temperature is 67 [degrees] on the suit; 5.8 on the pressure; steam temperature is 50 [degrees] and coming down slowly. Oxygen is 70-100 [percent]; amps, 22. Only really unusual thing so far beside ASCS trouble were the little particles, luminous particles around the capsule, just thousands of them right at sunrise over the Pacific. Over.
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CAPCOM
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Roger, Seven, we have all that. Looks like you're in good shape. Remain on fly-by-wire for the moment.
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John Glenn
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Roger. This is Friendship Seven. I am controlling fly-by-wire, present time. I have no left yaw low thrust. Over.
Spoken on Feb. 20, 1962, 4:23 p.m. UTC (62 years, 9 months ago). Link to this transcript range is: Tweet