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Flip of the Oxygen Stirrer Switch
55:53:18
Jack Swigert flipped the switch to stir the oxygen tanks so the liquid wouldn't settle at the bottom. This was routine and a requirement. -
Oxgen Tank 2 Pressure Rises
55:53:36
Oxeygen tank no. 2 rises in pressure for 24 seconds. -
Loud Bang
The crew heard a loud bang on board.