What does the airport ground service do? My friend said he went to work there.

Ground service, also known as ground service, is simply a ground attendant. Contrary to flight attendants and stewardesses, the work of ground attendants is mainly to deal with people at the airport or aircraft maintenance. The general work content includes building inquiries, telephone inquiries, broadcasting, flight information release, answering passenger complaint calls, check-in services, security inspection services, joint inspection services, guidance services, baggage services, terminal commercial services, etc.

Airport ground handling is an important additional service that has appeared in civil and military air stations at all levels since the establishment of air transportation services and the construction and operation of major airports. It is closely related and indispensable to the operation of the air station. All civil, commercial, and military aircraft require ground handling services. From the moment the aircraft enters the apron to the moment it leaves the apron and enters the taxiway, all logistics services during parking (fueling, water supply, passenger disembarkation and boarding) (Aircraft, baggage handling, aircraft meal loading, fuselage cleaning, waste disposal, etc.) are all the work scope of airport ground staff.

Reference: Baidu Encyclopedia—Ground Service