Definition
A distinct, named segment of a flight defined by what the airplane and pilot are doing at that point — for example, taxi, takeoff, climb, cruise, descent, approach, and landing. Each phase has its own typical procedures, configurations, workload, and risks.
Plain English
The part of the flight you are currently in. Flying is broken into stages, and each stage has its own job to do, its own checklist items, and its own things to watch out for.
Context Anchor
Used in flight training and FAA handbooks when explaining which actions, procedures, or risks apply during a particular part of a flight.
Derivation
‘Phase’ comes from the Greek phasis, meaning ‘appearance’ or ‘stage,’ originally describing the changing stages of the moon. In aviation, it carries the same idea — distinct stages that follow one after another in a recognisable sequence.
Why Pilots Care
Understanding phases of flight helps pilots apply the correct procedures and anticipate hazards unique to each segment, improving safety and decision-making.
Intuition Check
Do not read “phase” here as a scientific phase, like solid or liquid, or as a temporary mood. In aviation, a phase of flight means a named stage of the flight.
Example Sentence 1
Most general aviation accidents occur during the takeoff and landing phases of flight.
Example Sentence 2
Emergency procedures vary depending on the phase of flight in which the problem occurs.