Definition
A five-letter pronounceable name code assigned to a fix or waypoint used in air navigation. The five characters are unique within a region, contain only letters (no numbers), and are designed to be pronounceable so they can be spoken clearly over the radio. Examples include CEDAR, BOOTS, and HAYNI.
Plain English
A five-letter name given to a point in the sky that pilots and controllers use for navigation. The letters are picked so the name can be said out loud easily, like a real word.
Context Anchor
Seen in instrument procedure naming, chart labels, and route points loaded into cockpit navigation equipment.
Derivation
Identifier comes from identify, meaning to recognize or establish exactly what something is. In aviation, an identifier is a short code used to point to one exact item or location.
Why Pilots Care
Correct use ensures the navigation system follows the published procedure exactly and avoids route deviations or database mismatches.
Intuition Check
Do not read character as a person’s traits or personality here. In this context, a character is one letter or number in a code.
Example Sentence 1
Example Sentence 2
After entering the five character identifiers for each fix, the pilot verified the route on the moving map display.