How long does the Personal Breathing Equipment (PBE) last?

The duration that the Personal Breathing Equipment (PBE) lasts is crucial for ensuring passenger and crew safety in the event of smoke or toxic fumes in the cabin. The correct duration is approximately 15 minutes, which is designed to give enough time for crew members to deal with emergencies effectively, conduct evacuation procedures, or manage a situation that requires the use of the PBE.

This duration reflects the factors considered in safety design, including average response time needed for the crew to act under pressure while also accounting for the safety of those affected by smoke or other airborne hazards. The specified 15 minutes allows crew members to carry out necessary actions without compromising their access to adequate breathing support. Hence, this duration is both practical and aligned with safety regulations.