a place to store carry-on bags above the passenger seats

It is the area of entry into a Country, typically at the airport at which goods and cargo are searched for various reasons, such as ensuring persons are bringing in no illegal items etc

a safety device that holds passengers in their seats

The place where somebody comes to you. Usually at an airport

What do you do first when you arrive at the airport?

the part of the plane where the captain and co-pilot sit to fly the plane

to leave the ground, usually in a plane

You need this document to board a flight

when the passengers get on the plane

Bags that are small enough to take on the plane with you

the lowest class of traveling; economy tickets are the cheapest tickets

It is the area where passengers board to the aircraft