How long does the emergency oxygen supply last for the pilot?

The emergency oxygen supply for the pilot typically lasts for 10 minutes. This duration is designed to provide adequate time for pilots to manage emergencies such as decompression events, enabling them to descend to a safe altitude where breathable air is available. The importance of this time frame lies in its ability to ensure that pilots have enough oxygen to function during critical phases of an emergency.

Other durations, such as 5 minutes or 15 minutes, do not align with standard emergency protocols. A supply lasting only 5 minutes might not be sufficient in most emergency scenarios, while 15 minutes would exceed the norm for contemporary aircraft systems. The 10-minute duration strikes a balance, offering enough oxygen for effective crisis management without being excessive.