Quick Donning Mask

File:Quick Donning Mask.jpg

Example of a Quick Donning Mask offered by the AEROX company.

Quick Donning Mask is an emergency oxygen mask designed to be donned (put on) quickly, typically with one hand, within 5 seconds or less, to provide immediate oxygen in case of a sudden loss of cabin pressure or smoke/fume inhalation.

Purpose

Quick-donning masks are crucial safety equipment for flight crew, ensuring they can access and use oxygen quickly in emergency situations.

Design

• They are designed to be easily accessible and stored in a way that allows for quick retrieval.
• Many models feature an inflatable harness that inflates upon activation, allowing for a quick and secure seal.
• They are typically designed to accommodate prescription glasses.
• Some models are designed to be a "one size fits all" mask.

Function

• The mask is connected to the aircraft's oxygen system, providing a source of breathable oxygen.
• The mask can be used in different modes, such as diluter-demand (mixing oxygen with ambient air) or 100% oxygen.
• Some masks are designed to provide positive pressure, which is helpful in smoke or fume events.

Regulations

• Regulations require that flight crewmembers on flight deck duty be provided with quick-donning oxygen masks when operating at flight altitudes above a certain level (e.g., flight level 250).
• These masks must be able to be donned with one hand and within five seconds or less.
• After donning, the mask must not prevent immediate communication between crewmembers.

Examples

• AEROX offers quick-donning high-altitude diluter demand masks.
• Collins Aerospace provides quick-donning crew masks.