Definition
A system of low-altitude airways established by the FAA, based on a centerline that extends from one navigation aid (typically a VOR) to another. Federal airways are 8 nautical miles wide (4 NM each side of centerline) and extend from 1,200 feet above the surface up to, but not including, 18,000 feet MSL. They are designated on aeronautical charts with a 'V' prefix and are commonly called Victor airways.
Plain English
Federal airways are pre-defined highways in the sky that connect navigation stations on the ground. Pilots use them to fly known, charted routes between locations at lower altitudes.
Context Anchor
You will see Federal Airways on IFR charts, in route planning, and in clearances that assign an aircraft a specific published route.
Derivation
Called 'Federal' because they are established and regulated by the federal government (the FAA), and 'airways' because they function as roadways through the sky -- defined paths aircraft follow from one point to another.
Why Pilots Care
They give pilots dependable navigation references along with air traffic control support, making long flights safer and more predictable than random direct routing.
Analogy
A Federal Airway is like a highway drawn in the sky. You cannot see pavement, but the route is published on charts and can be followed with navigation equipment.
Intuition Check
Do not assume a Federal Airway is a physical lane or a route that only federal aircraft may use. It is a published route available for aircraft to use when properly planned or cleared.
Example Sentence 1
The pilot filed a flight plan from Sacramento to Reno via V6, a federal airway connecting the two areas.
Example Sentence 2
On the chart the Federal Airways appeared as straight lines connecting the radio beacons between the departure airport and destination.