turnaround

A turnaround is the elapsed time from when an aircraft touches down until it is ready for pushback on its next departure. This includes every task required to prepare the airframe, engines, systems, and cabin for the following flight: fuel replenishment, catering, lavatory servicing, cargo loading, passenger boarding, weight and balance calculations, and all required maintenance checks. For a narrow-body airliner on a domestic route, a typical turnaround lasts 30 to 50 minutes. Wide-body aircraft on international routes may require 60 to 90 minutes or more.

The turnaround time is a hard constraint on airline scheduling and profitability. An aircraft generates revenue only while airborne or with paying passengers aboard. Every minute of ground time is dead time. Airlines staff maintenance bases and gate crews specifically to minimize turnaround duration. A short-haul carrier operating on a two-hour block time (gate to gate) might spend nearly half its day on the ground across multiple stops; reducing average turnaround from 45 to 40 minutes creates significant annual revenue.

Critical path and bottlenecks

Turnaround tasks run in parallel where possible and in series where required. Fueling can happen while catering and cleaning proceed; however, boarding cannot begin until the aircraft is refueled and lavatory service is complete. Unscheduled maintenance or a missing part can extend the turnaround indefinitely. Airlines track actual turnaround performance against planned values and flag chronic delays. A gate held up by a single slow task creates a cascade of missed departures.

The term originates from the physical act of turning the aircraft around at the gate, which is part of the broader preparation. In freight operations, the turnaround may be as short as 20 minutes for a cargo sortie. Scheduled maintenance events, such as mandatory 100-hour or 1000-flight-hour inspections, break the routine turnaround cycle and are planned separately.