Above-the-wing airline services for passenger-airline customers, namely, passenger processing per flight turnaround including ticket counter service as in checking-in passengers per flight, gate service as in unloading and loading passengers per flight, passengers-with-disabilities or -accommodations services including unloading and loading such passengers with specially-trained personnel, and cabin cleaning services per flight turnaround as between unloading and loading passengers and as more particularly in picking up and/or vacuuming loose trash on seats and seat backs, folding seat belts, wiping down lavatories, and straightening the seats/removing any trash from elsewhere; Below-the-wing airline services for passenger-airline customers, namely ground handling services per flight turnaround including plane marshaling services as in once the plane has landed and reached the gate then guiding the pilot to the parking spot, baggage unloading and loading services per flight turnaround, lavatory-dump services as either on-request or stipulated on a per flight-turnaround basis, and motorized pushback services as in once the plane is loaded then push the plane back by motorized ground vehicle for taxi