Definition
A specific geographic point on the earth's surface that a pilot identifies and uses as a reference during flight, established by visual landmarks, radio navigation aids, GPS coordinates, or the intersection of bearings or radials.
Plain English
A known, named spot in space that a pilot uses to confirm where the airplane is along a route.
Context Anchor
Seen on charts, flight plans, GPS displays, and during route planning or position checks in flight.
Derivation
From the Latin 'fixus' meaning 'fastened' or 'made firm.' A fix 'pins down' the aircraft's position to a definite point rather than an approximate area.
Why Pilots Care
Enables accurate route tracking, compliance with clearances, and safe transition between waypoints in both visual and instrument flight.
Intuition Check
Do not read fix as repair here. A navigation fix is a known location used for finding or confirming position.
Example Sentence 1
The pilot reported crossing the navigation fix and continued on course toward the next waypoint.
Example Sentence 2
Crossing the navigation fix confirmed the aircraft remained within the assigned altitude block.