Definition
A code word used by ATC, meaning 'I intend to...' It precedes a controller's stated intention regarding how a clearance, instruction, or sequence will be handled.
Plain English
When a controller says 'plan,' they're telling you what they intend to do next. It's a heads-up about their thinking, not a current instruction you have to act on yet.
Context Anchor
Seen in flight planning, air traffic control instructions, preflight decisions, and written aviation guidance.
Derivation
Plan comes from a word meaning a flat drawing or layout. That helps in aviation because a plan is the laid-out idea of what will happen before the aircraft actually does it.
Why Pilots Care
A clear plan prevents airspace conflicts, supports safe routing, and allows controllers to sequence traffic efficiently.
Intuition Check
Do not read plan as a fixed promise that cannot change. In aviation, a plan is the intended course of action, but pilots and controllers may change it when weather, traffic, safety, or instructions require it.
Example Sentence 1
Approach advised, 'Plan the ILS Runway 27 approach,' giving the crew time to brief before the formal clearance.
Example Sentence 2
The controller adjusted the plan to keep the arriving traffic separated from departures.