Aeronautical Terms beginning with J

Jamming

Electronic or mechanical interference which may disrupt the display of aircraft on radar or the transmission/reception of radio communications/navigation.

Jet Blast

Jet engine exhaust (thrust stream turbulence).

Jet Route

A route designed to serve aircraft operations from 18,000 feet MSL up to and including flight level 450. The routes are referred to as “J” routes with numbering to identify the designated route; e.g., J105.

Jet stream

A high-velocity narrow stream of winds, usually found near the upper limit of the troposphere, which flows generally from west to east.