Which term is used to reference a passenger in aviation terminology?

In aviation terminology, the term "PAX" is widely used to refer to passengers. This abbreviation comes from the word "passenger" and is a standard shorthand utilized in various areas of the travel industry, including communications between flight crews and ground staff. Using "PAX" allows for a quick and clear reference to the individuals traveling on the aircraft without having to use the full term every time.

The other terms listed have specific meanings that do not relate to passengers. "POC" refers to "Person of Contact," often designated for communication purposes. "PBE" stands for "Protective Breathing Equipment," which is safety gear used by crew members in emergency situations. "PSU" means "Passenger Service Unit," which involves the equipment located above passenger seats that includes features such as reading lights and oxygen masks. Each of these options serves distinct functions within aviation but does not denote passengers directly.