How long do oxygen generators provide oxygen to crew members?

Oxygen generators on aircraft are designed to provide a specific amount of oxygen for crew members in the event of a cabin depressurization. The typical duration for oxygen supply from these generators is approximately 13 minutes. This duration is calculated based on the need to allow both the crew members to perform their duties and to safely descend to a lower altitude where breathable air is available.

The design focuses on ensuring adequate oxygen supply for critical phases of an emergency response, emphasizing the importance of time in which safe actions can be taken. While other options suggest durations of 10, 15, or 20 minutes, these figures do not align with the standard operational protocols for oxygen systems on aircraft. The 13-minute figure is often cited in training materials and technical documentation, reinforcing its significance as the standard for effective emergency response.