FLOWN APOLLO 11 LUNAR SURFACE CHECKLIST SHEETSECURING EAGLE BEFORE THE MOON WALK.
Apollo 11 lunar surface checklist, pp SUR-11/SUR-12, a single sheet printed recto and verso, July 1969, 8 by 5 ½ inches, inscribed on each side by Buzz Aldrin.
Critical parts of a long series of steps to place Lunar Module Eagle in a secure posture, so that Neil Armstrong and Buzz Aldrin could venture out of Eagle and onto the lunar surface.
Accompanied by a Typed Letter Signed by Buzz Aldrin, which reads in part: "Accompanying this letter is a sheet numbered SUR-11 and SUR-12 from the Apollo 11 LM Lunar Surface Checklist, Part No. SKB32100074-363, S/N 1001. The checklist was taken to the Moon on the flight of Apollo 11 during July 16 to 24, 1969. Then the entire checklist, including this sheet, was carried to the surface of the Moon in Lunar Module Eagle during the first lunar landing on July 20, 1969. This sheet has the important steps Neil Armstrong and I performed in Eagle just about an hour after the first manned lunar landing.
After landing we started a series of procedures listed in the initial pages of the Lunar Surface Checklist. The pages before SUR-11 had Neil and I preparing for a possible emergency lift-off some 2 hours after landing. That included a series of star sightings to align the navigational equipment to our exact position we now called 'Tranquillity Base.'
Side SUR-11 has the final steps Neil and I made to complete the lunar surface alignment of Eagle's navigational equipment just prior to 30 minutes from the possible emergency lift-off (TIG-30). We were at 104 hours and 12 minutes into the mission at the bottom of SUR-11 and began to configure circuit breaker panel 11 as per the chart on side SUR-12.
As we reviewed the panel chart on side SUR-12, we made sure that all breakers were set as indicated. A black circle indicates the breaker should be 'pushed in' or engaged to allow current flow. A white circle indicates the breaker should be 'pulled out' to break the flow of electrical current, thus preventing operation of that part of Eagle's systems. The emergency lift-off did not occur and just a few hours later Neil Armstrong and I became the first humans to walk on another celestial body, the Moon."
The checklist has been inscribed on both sides by Aldrin: on one side "Used by Neil Armstrong and me just after Eagle's landing on Apollo XI, Buzz Aldrin," and on the other "Flown to the lunar surface on Apollo XI, Buzz Aldrin." Originally from his collection.