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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.
“Low Earth orbit”2 pages
Read from the scan by GLM-OCR; expect the odd misread word.
# CONFIDENTIAL
## 7.0 LOI THROUGH LUNAR MODULE ACTIVATION
ARMSTRONG With respect to preparation for LOI, our flight plan was written in such a way that it depended on doing midcourse 4 and option 1 P52 to get the landing site REFSMMAT into the computer and then an option 3 REFSMMAT P52.
ALDRIN Was that before midcourse 4 was performed?
COLLINS Yes, midcourse 4 was with the landing site REFSMMAT.
ARMSTRONG Then we did our simulation of LOI where we checked the gimbal motors and a $360^{\circ}$ pitch maneuver to look at the Moon, followed by preparation for LOI. The midcourse 4 was cancelled. We did not do the option 1 P52 that established our new REFSMMAT. ... set up the computer for the LOI. When we got around to the P52 in the flight plan, which occurred at 73 hours, we did option 3. We recognized that we had never done a new P52 to an option 1. We are not sure that we could at that point in time.
COLLINS Did they have an uplink?
ARMSTRONG I'm not sure they had uplinked the necessary data into the computer. In any case, we recognized that we were not operating the way the flight plan had intended, due to this cancellation of midcourse 4; therefore, we got that information from the ground. We did a P52 option 1, then
## 7.1 PREPARATION FOR LOI
## CONFIDENTIAL Document, cited by the archive. The PDF is mirrored here; the original link is above. The text was read from the page images by GLM-OCR; expect the odd misread word. 251 pages are in the text index: search them above, or from the library's search.