from the checklist used extensively by astronauts james lovell and fred haise during the emergency conditions of the Apollo 13 mission.
Each side of this sheet has a tab section titled "DOCKED APS BURN.'" The Haise letter reads in part: "The top of side 20 is labeled 'DOCKED APS BURN' and would be used primarily for an abort during insertion into lunar orbit if our descent engine did not provide sufficient velocity to escape from the lunar gravity environment. The center of this side has an illustration of our FDAI or Flight Director Attitude Indicator on the LM control panel. It also describes the flight method for 'PITCH Error' then 'ROLL Needle Left' with steps I should perform immediately after APS ignition. I made the additional notes in red ink of: 'If rate & err needles moving in same direction in same quadrant.'
"The side numbered 21 has a series steps including battery, circuit breaker, and switch settings. Various systems were set to 'ON' or 'OFF' with some to 'OPEN' or 'CLOSED.' The steps after '400+5' were to load and verify the actual burn values including time and attitude. After the flight I wrote and signed side 20 and 21 in blue ink with: 'Carried around the Moon! Fred Haise, Apollo 13 LMP.' This sheet has been in my personal space collection since 1970. It is a significant artifact from the Apollo 13 mission."