What does 'Actual Block to Block' refer to in aviation?

'Actual Block to Block' refers specifically to the period from when an aircraft moves under its own power until it comes to rest. This measurement includes all phases of travel in that time frame, encompassing the time spent taxiing on the ground before takeoff and after landing, as well as the actual flight time in the air.

This definition is critical in aviation operations as it reflects the true utilization of the aircraft and is an important metric for airline scheduling, crew duty time calculations, and operational efficiency. Understanding the complete 'block to block' concept allows for accurate assessments of aircraft performance and scheduling, ensuring that all facets of the travel process are taken into account.