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Apollo 11

Apollo 11 LM onboard checklists

The procedures that physically flew aboard Eagle: spiral-bound, GET-keyed, crew-annotated books that turned the plans into switch-by-switch cockpit actions. Two are in this library — the LM Systems Activation Checklist (waking the LM up) and the LM Lunar Surface Checklist (the surface stay, SUR-1…SUR-68) — the as-flown layer beneath the nominal timeline.

Activation: waking Eagle up

Section titled “Activation: waking Eagle up”

The activation book scripts the intravehicular transfer and power-up around ~99:00 GET — hatch operations, panel-by-panel configuration, comm checks — and carries the CSM-to-LM transfer list (Basic Date July 8, 1969, REV H): the manifest of what the landing physically required. Suits and ancillary gear, the CDR’s CSRC pocket for the contingency sample, dosimeters, six 16-mm and three 70-mm film magazines (matching the photographic index), and the LM flight data file: activation checklist, timeline book, lunar surface maps, strip charts, star charts. Crossed-out lines and handwritten additions (“Molded Earpiece”, “LM SFC Book”) record the late procedure churn.

The surface book: stay/no-stay to ascent-ready

Section titled “The surface book: stay/no-stay to ascent-ready”

The surface checklist opens at touchdown plus eight minutes: the T+8 “STAY” decision (102:55 GET) configures Eagle for an immediate emergency liftoff — guidance mode checks, RCS valve states, gyro-calibration pads — before the crew may even doff helmets and gloves. Successive sections hold the LM one switch-sequence from departure throughout the stay (ENG STOP/START reset, STAGE - SAFE guarded), the standing posture behind the ascent.

Its “PREP FOR CABIN DEPRESS” pages script EVA preparation as a two-man procedure — OPS oxygen hose to the suit, purge-valve installation (“verify closed & locked, pin installed”), PLSS mode A, anti-fog, helmet/LEVA/EV gloves each donned “and lock” — the cockpit-level detail behind the hour-long prep overrun. For the EVA itself the books hand off to cue cards (“Hang-down, Final EVA Configuration & EVA Card No. 1”), with the instruction “Stow Lunar surface checklist in purse” — on the Moon, the timeline ran from cards clipped in the cabin.

Why they matter to the library

Section titled “Why they matter to the library”

The checklists close the procedural chain plan → checklist → transcript → debrief: the LSOP and EVA Procedures say what was intended, these books say what the crew’s hands were instructed to do, the air-to-ground record says what happened, and the debriefing says how it felt. Page-level basic/change dates (June 16 → July 12, 1969, days before launch) date-stamp how late the surface procedures were still moving. The chain is demonstrably one event: the surface book carries three handwritten GET hacks (106 49 / 107:31 / 108 01 on SUR-27, -28, -30) — the crew’s own pen timing the EVA prep — and the “108 01” mark, that page’s first printed line (“S-band Modulate — FM”), and the loop’s 108:01:03 call agree to the minute (One hour, four layers).

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Sources

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Topics

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