What safety item is included in the PSU associated with oxygen?

Oxygen masks are a critical safety item included in the Passenger Service Unit (PSU), which is situated overhead in the cabin of an aircraft. In the event of a sudden loss of cabin pressure, these masks automatically drop down to provide supplemental oxygen to passengers. This is essential for maintaining the safety and health of passengers during emergencies, particularly at high altitudes where the air is thin and breathing becomes difficult.

The inclusion of oxygen masks in the PSU ensures that passengers can quickly access oxygen in a controlled manner, allowing them to breathe normally until the aircraft either descends to a safer altitude or the situation is resolved. The visibility and accessibility of these masks are designed for efficiency, enabling passengers and crew members to respond quickly during a critical situation.

Other safety items, like fire blankets, life jackets, and emergency lighting, serve different purposes and are located in areas specified for those particular emergencies. Fire blankets are used for fire containment, life jackets are used for water landings, and emergency lighting guides evacuation pathways. However, they do not directly relate to the provision of supplemental oxygen in the event of a cabin decompression, highlighting why oxygen masks are uniquely significant in this context.