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This is Volume 1 of NASA's Apollo 11 Technical Crew Debriefing, dated July 31, 1969. The Mission Operations Branch of the Flight Crew Support Division at the Manned Spacecraft Center in Houston prepared it, and it was originally classified Confidential. In it Armstrong, Aldrin and Collins go phase by phase through suiting, launch, powered flight, Earth orbit and lunar surface activities. They comment on suit fit, vibration, checklists, lunar dust, footing and poor sleeping conditions in the lunar module. A section titled Visual Sightings appears in the table of contents.
“Neil”19 pages
## CONFIDENTIAL you very good indications as you are approaching that range. So we were a little misled and I thought we were still well out of range when we finally got the lockon. You call up the program before the command module gets to 400 miles. It sits and waits; and, when it gets less than 400, it locks on automatically, and you see the signal strength grow and it starts to track. But it's in mode 2 so you don't see the needles doing anything; the cross-pointers move, indicating it's got rate drive going as it's trying to keep up with it. Because we didn't want to run the tape meter into the stops, we left it in ALTITUDE/ ALTITUDE RATE. We really didn't have much of an indication that any good information was coming in, other than signal strength. I guess the ground got the data on the downlink. When it broke lock, I thought the command module was overhead and it had broken lock because of a maximum rate drive. The radar representative from RCA had indicated that the SPEC said it might break lock, but he didn't think it would as it went over the zenith. But, because of the AGS indications, I thought that was what had caused the break-lock. Evidently, it had gone out the front field of view. It broke lock just a short time after the time given us by ## CONFIDENTIAL
Document, cited by the archive. The PDF is mirrored here; the original link is under it. The text was read from the page images by an OCR model; expect the odd misread word. 251 pages are in the text index: search them above, or from the library's search.