Fig.7 representation of aircraft trajectory with the different phases of flight

Variants of an aircraft type may fall into different wake turbulence categories, (e.g. L/M or M/H). In these cases, it is the responsibility of the pilot or operator to enter the appropriate wake turbulence category indicator in the flight plan.

3.2 Phase of flight

The aircraft movement can be divided in 6 main phases characterized by different speed, altitude and aircraft attitude: - taxing - Take-off - Climb - Cruise - Descent - Landing

Fig.7 representation of aircraft trajectory with the different phases of flight

3.2.1 Taxing

Taxiing refers to the movement of an aircraft on the ground, under its own power. The aircraft moves on wheels. An airplane uses taxiways to taxi from one place on an airport to another; for example, when moving from a terminal to the runway.

The aircraft always moves on the ground following the yellow lines, to avoid any collision with the surrounding buildings, vehicles, or other aircrafts. The taxiing motion has a speed limit. Before making a turn, the pilot reduces the speed further to prevent tire skids. Just like cars, there is a certain list of priorities during taxiing. The aircrafts that are landing or taking off have higher priority. The other aircrafts must wait for these aircrafts before they start or continue taxiing.