Definition
A combined avionics radio that handles both navigation and voice communication functions in a single unit. The navigation side receives signals from ground-based stations such as VORs and localizers, while the communication side transmits and receives voice on aviation VHF frequencies used to talk with ATC and other aircraft.
Plain English
One radio box in the panel that does two jobs: it picks up navigation signals to help you find your way, and it lets you talk to controllers and other pilots.
Context Anchor
Seen on aircraft radio panels, avionics checklists, and instrument flying discussions when selecting frequencies for navigation guidance or radio calls.
Derivation
NAV is short for navigation and COM is short for communication. The slash simply indicates the two functions are combined in one unit.
Why Pilots Care
Saves panel space and lets the pilot switch quickly between navigation and voice functions without reaching for separate radios.
Intuition Check
NAV/COM does not mean a navigation computer. It means radio equipment that combines navigation receiving and voice communication functions.
Example Sentence 1
She tuned the destination VOR on the NAV side of the NAV/COM and the tower frequency on the COM side.
Example Sentence 2
While monitoring the VOR, the student used the NAV/COM to request a frequency change from approach control.