On December 11, 1972, Apollo 17 commander Gene Cernan manually took control of the lunar module Challenger's landing at 300 feet by selecting computer program P-66, refusing to let the digital autopilot complete the landing.
Sources
- The First True Spaceship (smithsonianmag.com)
- https://www.nasa.gov/wp-content/uploads/static/history/alsj/a17/a17.landing.html (nasa.gov)
- https://apollojournals.org/afj/compessay.html (apollojournals.org)
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