Important draft of a Manned Spacecraft Center internal note entitled "Apollo Mission Techniques: Techniques Description, Lunar Landing Mission, Descent Phase, Volume I," 8.5 x 11, 34 pages, dated June 17, 1968. The report presents the "guidance and control sequence of events, the data flow, and the real time decision logic for the Descent Phase of the Lunar Landing Mission." It discusses docked activities, separation activities, DOI ignition/monitoring verification, pre-ascent ignition activities, ignition to 35,000 feet altitude, 35,000 feet altitude to high gate, and high gate to touchdown. The discussion of the techniques is followed by detailed logic charts outlining the descent phase of the mission. Several handwritten corrections and revisions have been made throughout the document. Stapled to the front is a distribution list, naming several of the Apollo astronauts—including Neil Armstrong, Buzz Aldrin, Michael Collins, Alan Shepard, and others—among the recipients.
