Select the correct oxygen duration for passenger oxygen generators.

Select the correct oxygen duration for passenger oxygen generators.

• A. 13 minutes
• B. 1 minute
• C. 28 minutes
• D. 35 minutes

Answer: (B)

Oxygen duration is about how long the passenger oxygen system can continuously supply breathable oxygen after deployment. For passenger oxygen generators on most commercial aircraft, the design goal is to provide enough oxygen for a safe descent to a lower, breathable altitude, which is typically around 12 to 15 minutes. That gives passengers time to don masks and for the aircraft to reach a safer cruising altitude. An option of one minute doesn’t align with these standard specifications, as it would be far too short to achieve a safe descent for the cabin. If your study material lists one minute, it might be referring to a different, non-passenger context or a specific maintenance check, but for the actual passenger system, the relied-upon duration is generally in the low-teens of minutes.

Oxygen duration is about how long the passenger oxygen system can continuously supply breathable oxygen after deployment. For passenger oxygen generators on most commercial aircraft, the design goal is to provide enough oxygen for a safe descent to a lower, breathable altitude, which is typically around 12 to 15 minutes. That gives passengers time to don masks and for the aircraft to reach a safer cruising altitude. An option of one minute doesn’t align with these standard specifications, as it would be far too short to achieve a safe descent for the cabin. If your study material lists one minute, it might be referring to a different, non-passenger context or a specific maintenance check, but for the actual passenger system, the relied-upon duration is generally in the low-teens of minutes.