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General

nine-line

What does nine-line mean?

A standardized nine-line radio request format — most commonly for a MEDEVAC — that conveys the essential information (location, callsign, casualties, and so on) in a fixed sequence.

""Stand by to copy a nine-line MEDEVAC — line one, grid follows.""

Origin

US military standardized request format; the MEDEVAC nine-line is the best-known example.

Frequently asked questions

What is a nine-line?
It is a standardized nine-part radio request format — most often a MEDEVAC request — that passes essential details like location, callsign, and casualties in a fixed sequence.
What is a nine-line MEDEVAC?
It is the best-known nine-line: a nine-item request to evacuate casualties, sent line by line so nothing critical is missed.
Why nine lines?
The format has nine numbered lines, each carrying one required piece of information in a set order to keep the request fast and complete.
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Slang definitions: FreeDict original editorial.