Not off the top of my head about me, but I can recall a freak coincidence.
This is a famous photograph of the Apollo 12 launch, the Moon mission that took place a few months after Apollo 11. Within the first 40 seconds of the launch, the Saturn V was hit twice by lightning, which entirely crashed all electrical systems on board and rendered the Command Module with all three astronauts on board blind and mute to all external systems and inputs, as well as inadvertently activating all caution/warning systems and indication lights all at once. This also killed all information feeds direct to Houston. For all intents and purposes, according to the computers at Mission Control, the Apollo 12 had been destroyed (apart from garbled declarations of fear from the Astronauts). The Flight Director was forced to strongly consider a Launch abort, which would jettison the Astronaut's command module and terminate the Saturn V (cut the engines, let it fall away for a bit, and the blow it up), assuming the Command Module Jettison motor had not already been damaged by the lightning.
EECOM Electronics Flight Engineer John Aaron entirely by coincidence had actually seen the systemic failure before in a freak glitch during a launch simulation about one year before, and knew the solution to the power loss, and made the famous call to the Flight Director "Try SCE to Aux" which would switch Signal Condition Electronics to an Auxiliary power main. Aaron and Alan Bean, one of the Astronauts aboard, were the only ones in all of NASA who knew about this solution, so the Flight Director was surprised and initially incredulous at the call, but stated it anyways. Alan Bean found the obscure switch, and the Electronics regained clarity, saving the mission. Alan Bean burst into nervous laughter, reportedly, and laughed all the way into orbit.
