Definition
A waypoint or fix name made up of exactly five letters, pronounceable as a word, used to identify points along RNAV routes and instrument procedures. These names are assigned by ICAO so they are unique worldwide and can be spoken clearly over the radio.
Plain English
A five-letter name for a point in the sky, designed to sound like a word so pilots and controllers can say it easily on the radio. Examples are names like BRAVO, MOGUL, or DRAKO.
Context Anchor
Seen on instrument procedure charts, route descriptions, and navigation equipment displays when fixes or waypoints are named.
Derivation
Combines the fixed length 'five-character' with 'identifier' from the Latin 'identificare' meaning to make known, allowing precise recognition amid many similar items in complex airspace.
Why Pilots Care
Ensures correct selection of procedures and fixes during instrument flight planning and execution, preventing navigation errors.
Intuition Check
“Character” does not mean a person’s personality here. It means one written symbol, such as a letter or number, in the identifier.
Example Sentence 1
Cleared direct to the five-character identifier MOGUL, then as filed.
Example Sentence 2
Each waypoint on the STAR is designated by a unique five-character identifier for precise routing.