Gene Cernan’s lunar flown Abort Guidance System signal flow schematic carried aboard the lunar module Challenger during the Apollo 17 mission, measures 37.75 x 10.5, signed and flight-certified on the left side in black ink, "Flown to the lunar surface in the valley of Taurus Littrow, December 1972, Gene Cernan, Apollo XVII CDR." Tab in lower right reads "SIGNFLOW AGS," with adjacent NASA sheet information: "18 AGS, AGS Signal Flow, LM, 10 and Subs, Size J, Dwg No. 10.18, Page 10-30, Sheet 1 of 1." The schematic was part of the Lunar Module Systems Data manual carried along for troubleshooting and reference for the many electrical and mechanical systems on the lunar lander, space suits, and lunar rover. The manual consisted of thirty-eight such drawings. This particular example details the connections between components, instruments, and readouts for the Abort Guidance System, which was only to be used in the case of an aborted landing. Matted and framed to an overall size of 43 x 16.25, featuring a window in the backing for viewing a photo CD and the certificate of authenticity signed by Cernan: "I certify that this schematic drawing from Apollo 17 was flown to the surface of the moon aboard the Lunar Module Challenger." In fine condition. Accompanied by an image taken at the time of signing, as well as copies of images of the signed manual this schematic originates. After successfully undocking from Ron Evans and the command module America, the lunar module Challenger crew of Commander Cernan and LMP Harrison Schmitt landed within the lunar valley of Taurus-Littrow on December 11, 1972. The crew performed one EVA (extravehicular activity) on each of their three days on the lunar surface, and, after repairing the broken front fender of the LRV, proceeded to smash several Apollo records—lunar stay (74 hours, 59 minutes), total EVA duration (22 hours), and lunar rock and soil collection (253 lbs). A visually impressive lunar flown schematic, direct from the personal safekeeping of the last man to set foot on the moon.
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