Definition

The specified path to be flown by aircraft operating in the vicinity of an aerodrome.

Source: ICAO Doc 4444 PANS-ATM

Description

The aerodrome traffic circuit consists of five segments and four turns (see picture below). While not explicitly stated in the definition, it is normally used by aircraft flying under VFR or conducting visual approaches or departures. The two main features defining the circuit are the runway and the turn direction. With respect to the latter, circuits can be "left hand" (all turns are made to the left) or "right hand" (right turns only).

An example of a left-hand aerodrome traffic circuit for runway 09.