10:10 PM Italian time: A yellow alarm LED lights up on the LEM; without any inflection in his voice, Armstrong announces, “Program Alarm. It’s a 1202.” After 15 seconds, Houston says, “We’re GO on that alarm.” The problem was an overload of the onboard computer, designed at MIT to manage the attitude calculations: when the landing radar data arrived, it temporarily overloaded. The alarm will reappear twice in the next 4 minutes and will only be a nuisance for Armstrong, who is focused on what he sees out the window and tolerates no distractions.
