What is the approximate duration of the chemically generated emergency oxygen on the B737-700 (73G)?

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Multiple Choice

What is the approximate duration of the chemically generated emergency oxygen on the B737-700 (73G)?

Explanation:
Chemically generated emergency oxygen on the 737-700 is designed to provide a fixed supply for about twelve minutes once deployed. This duration is chosen so occupants have enough time to descend to a breathable altitude and continue breathing while the aircraft handles the depressurization event. Shorter durations like six or ten minutes wouldn’t give the required safety window, while a twenty-minute duration isn’t the capacity of this system. So, the best answer is roughly twelve minutes.

Chemically generated emergency oxygen on the 737-700 is designed to provide a fixed supply for about twelve minutes once deployed. This duration is chosen so occupants have enough time to descend to a breathable altitude and continue breathing while the aircraft handles the depressurization event. Shorter durations like six or ten minutes wouldn’t give the required safety window, while a twenty-minute duration isn’t the capacity of this system. So, the best answer is roughly twelve minutes.

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