Preliminary Gemini 4 Crew Debriefing, Part II, 1965

This is a preliminary transcript of Part II of the Gemini 4 (GT-4) flight crew debriefing, prepared by NASA's Spacecraft Operations Branch, Flight Crew Support Division, and dated June 18, 1965. The debriefing began aboard the recovery ship USS Wasp and ended at the Manned Spacecraft Center. In it, astronauts McDivitt and White discuss how the spacecraft systems performed, including the platform, OAMS, RCS and control modes. They also cover operational checks, visual sightings, experiments, mission planning and training, and give recommendations for future crews.

From the source:Release of 2026-06-12 Incident: 6/9/65, North Atlantic Ocean. This document is a preliminary transcript (Part II) derived from voice recordings of the Gemini 4 flight crew debriefing taken aboard the recovery ship, USS Wasp, on June 9, 1965. Part II of this document contains the “Visual Sightings” section of the debriefing (pages 196-224), where astronauts James McDivitt and Edward White describe their observations while aboard the spacecraft.

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White
McDivitt
White
GO~ ifli itl..l,tct 0
that reason I think that we ought to make an
effort to get the ECS o tank vent and the
2
ECS o tank pressure gage compatible and at
2
a l ot higher pressure than they are. This '
suiting up and unsuiting every four hours is
for the birds.
I thoroughly agree with you, Jim. There are
two things I want to know. I want to know if
they deliberately lowered the venting pressure
for the o2 system down to 967 to solve the
problem on GT-3. I would also like to know
if they deliberately lowered the cabin venting
down to 5.4 . I'd like to know the answer to
those two questions. I think the combination
of those two situations make what I feel is an
unsatisfactory situation in our flight. It
occupied far more time--
That's right, we were screwing around with
that ECS o . That's something we never had
2
touched. It was a eage that we should have
monitored, instead of a thing that we manipu
lated all the time.
Right, Okay, the cabin pressure regulator.