Beschreibung:

FOR AN EMERGENCY RETURN OF COLUMBIA BACK TO EARTH. Apollo 11 Launch Operations Checklist, page 4-11 and 4-12, a single sheet printed recto and verso. NASA/MSC, April 15, 1969, revised June 27, 1969. 8 x 5½ inches. Red tinted for quick reference during an emergency. With a Typed Letter Signed by BUZZ ALDRIN using his personal stationery and copy of the checklist front cover. Provenance: Originally from the personal collection of Buzz Aldrin. INSCRIBED and SIGNED: "Used in training for Apollo XI, BUZZ ALDRIN" on page 4-11. BUZZ ALDRIN'S signed provenance letter reads in part: "Accompanying this letter is a sheet numbered 4-11 and 4-12 from the CSM 107 (Apollo 11) Launch Operations Checklist, SKB32100080-306. It was part of the complete manual that was used in the Command Module simulator ... The sheet is from Section 4 titled: Abort Procedures. The entire checklist, including this page, was used by all three Apollo 11 crew members: Neil Armstrong, Michael Collins and myself. We referred to this section almost every time we performed a launch simulation because the simulator team would often put us in a situation that required us to execute an abort. Side 4-11 has the steps for an abort if an emergency arose during TransLunar Injection, and we had to return to earth immediately. We would separate from our S-IVB, the third stage of the Saturn rocket, and get into a retro attitude. Side 4-12 has blank spaces to log the real-time spacecraft attitude coordinates. Needless to say, this would not have been an enjoyable condition, having started our burn to send us to the Moon. Neil would make the command decision onboard for this abort.... I have written on page 4-11: 'Used in training for Apollo XI' and signed that page."