What Does COS Stand For?
COS stands for Carry On Oxygen System
The Carry On Oxygen System (COS) is a vital safety feature designed for use in aircraft emergencies. It provides supplemental oxygen to passengers and crew in the event of cabin depressurization, ensuring sufficient breathable air at high altitudes. The COS typically includes portable oxygen units that are stored in an accessible location, allowing for rapid deployment and use. This system enhances passenger safety and compliance with aviation regulations by enabling effective response to potential in-flight emergencies.
Added on 14th April 2008 | Last edited on 16th June 2025 | Edit Acronym