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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.
Read from the scan by GLM-OCR; expect the odd misread word.
## CONFIDENTIAL It's a question of whether you want to do it. For example, on the secondary glycol radiator leak check, the secondary glycol loop has been bypassed, that is, no fluid has been allowed to go through the radiator. You put the valve from bypass to flow for 30 seconds, turn the pump on, and allow fluid to flow through the radiator. Then you confirm that there is no leak by checking the accumulator quantity and making sure that it does not decrease. So what happened? In this case, accumulator quantity decreased by about 4 percent. This had never come up before. The ground suspected that it was due to thermal characteristics in contractions or expansions in the system, and not a leak. It dropped and then stabilized. I preferred to leave that equipment alone rather than mess with it. I guess there was no leak. On the other hand, we could have gotten into a big argument over a suspected leak even to the point where you might have to delay TLI by a revolution. If you don't have concrete evidence that something has malfunctioned, and it's your backup system, leave it alone. Don't mess with it. # 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.