Three records, one moment — synced transcript reader

Two of the mission’s defining moments were captured by three independent voice records at once: the GOSS NET 1 air-to-ground loop, the CM onboard recorder (DSE) running on Columbia overhead, and the PAO broadcast. They disagree — by seconds, by wording, by what they even contain. Scrub or play the shared clock and watch the same instant unfold three ways.

GET — scrub or play — the same instant, three records

GOSS NET 1 — air-to-ground

102:45:17 LMP "40 feet, down 2 1/2. Kicking up some dust."

102:45:40 LMP "CONTACT LIGHT."

102:45:43 LMP "Okay. ENGINE STOP." —

102:45:45 LMP "ACA - out of DETENT." — CDR: "Out of DETENT."

102:45:57 CC "We copy you down, Eagle."

102:45:59 CDR (TRANQ) "Houston, Tranquility Base here."

102:46:04 CDR (TRANQ) "THE EAGLE HAS LANDED."

102:46:06 CC "Roger, Tranquility. We copy you on the ground. You got a bunch of guys about to turn blue. We're breathing again. Thanks a lot."

102:46:38 LMP "Very smooth touchdown."

CM onboard recorder (DSE)

102:43:08 CDR "Pretty rocky area."

102:43:57 CDR "Okay, how's the fuel?"

102:44:00 CDR "Okay, Ed, this looks like a good area here."

102:45:13 LMP "Looks good, 40 feet down, 2-1/2. Picking up some dust."

102:45:41 CDR "SHUTDOWN."

102:45:42 LMP "Okay. ENGINE STOP; ACA out of DETENT."

102:45:58 CDR "Houston - Tranquility Base here. THE EAGLE HAS LANDED."

102:46:14 CDR "Thank you." (the Houston line it answers is not on the tape)

102:46:36 LMP "Very smooth touchdown."

PAO broadcast

"…40 feet, down 2-1/2. Picking up some dust. 30 feet, 2-1/2 down. Faint shadow. 4 forward… (garbled) Contact light. Okay, engine stop. ACA out of detent…" — CAPCOM: "We copy you down, Eagle." — EAGLE (Armstrong): "Houston, Tranquility base here. The Eagle has landed."