The LEM was now fully operational, with an alignment stored in its guidance system. It had been two hours and forty-three minutes since Swigert had first reported a problem, about an hour and twenty minutes since the MOCR had first realized the crew would have to use the LEM. Right after Apollo 13, John Aaron recalled, F.O.D. prepared special checklists for activating the LEM as a lifeboat, and during the sims for every mission that followed, the flight control team was thrown at least one massive Thirteen-type failure on a translunar coast. But no matter how good the new checklists were, and
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