When should a PBE be worn?

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A PBE is protective breathing equipment designed to provide clean air when smoke or fumes threaten the air you breathe. You should wear it as soon as smoke or fumes are present because these conditions expose you to toxic gases and irritants that can harm your lungs quickly. Donning the PBE early helps protect your airway while you move to safety, making it easier to evacuate and continue to function in a smoky environment. It isn’t worn only during takeoff and landing, nor solely after evacuation completes, and it isn’t necessary in clear air, since the equipment is specifically for environments with inhalation hazards.