What is the maximum duration of oxygen supply from the CRJ 550 oxygen system for passengers?

The CRJ 550 oxygen system for passengers is designed to provide supplemental oxygen in the event of cabin depressurization. The maximum duration of oxygen supply is crucial for ensuring passenger safety during emergencies. In this case, the correct answer indicates that the system is capable of supplying oxygen for up to 13 minutes, which is sufficient time for the aircraft to descend to a safer altitude where breathable air is available. This duration is consistent with the performance specifications established for emergency oxygen systems, allowing for adequate response time in crisis situations.

It is important to note that while other durations might suggest they are adequate for passenger emergency needs, they do not align with the specific capabilities of the CRJ 550's oxygen system, which has been optimized to cater to the safety protocols in aviation.