Editing Openai/67c4e193-e008-8008-8d82-c239519e3d5a (section)

==== Apollo 1 (AS-204) – The Plugs-Out Test ====

Mission Data: Apollo 1 was a ground test, not an actual spaceflight, so its “telemetry” was limited to ground-based communications and instrument readings during the test. During the tragic cabin fire on January 27, 1967, mission control was monitoring some spacecraft data and voice comms. Key data (like pressure readings) and the crew’s final audio were recorded for the subsequent accident investigation. Transcripts of the Apollo 1 test communications have been available in reports, and recently NASA even digitized surviving audio from Apollo 1 as part of a modern archival projectengineering-research.utdallas.edu<ref>{{cite web|title=engineering-research.utdallas.edu|url=https://engineering-research.utdallas.edu/recovering-audio-from-the-apollo-moon-missions/#:~:text=Hansen%E2%80%99s%20team%20at%20the%20Center,Apollo%201%20and%20Gemini%20missions|publisher=engineering-research.utdallas.edu|access-date=2025-12-06}}</ref>. The Apollo 1 voice recordings and telemetry were preserved in written form (and limited audio) for analysis, but no separate “telemetry tapes” were stored long-term since this was not a completed space mission.

Current Status: All Apollo 1 data relevant to the accident is in NASA’s archives (primarily on paper or transcribed format). There were no dedicated telemetry tape reels comparable to the later missions. The audio of the test (on NASA analog tapes) was retained and was included in the University of Texas Dallas digitization effort in the 2010sengineering-research.utdallas.edu<ref>{{cite web|title=engineering-research.utdallas.edu|url=https://engineering-research.utdallas.edu/recovering-audio-from-the-apollo-moon-missions/#:~:text=Hansen%E2%80%99s%20team%20at%20the%20Center,Apollo%201%20and%20Gemini%20missions|publisher=engineering-research.utdallas.edu|access-date=2025-12-06}}</ref>. There are no Apollo 1 telemetry reels in museums or private collections, aside from the official records held by NASA. The data is accessible through accident reports and, for audio, through the recent digital archives, but the original analog tapes are limited and maintained internally for historical documentation.

('''Note:''' Apollo 2 and 3 were never flown; the mission numbering skipped from Apollo 1 to Apollo 4 after the Apollo 1 tragedy.)