AIM - RAC 4. 3 - Traffic Circuits - Controlled Airports

Entry to the circuit shall be made in such a manner so as to avoid cutting off other
aircraft, conforming as closely as possible to the altitude (normally 1 000 ft AAE),
speed and size of the circuit being flown by other traffic.

In order to increase safety by reducing the possibility of conflicting with departing
traffic, aircraft approaching the active runway from the upwind side are to join the
downwind leg abeam a point approximately midway between each end of the runway,
taking into account aircraft performance, wind and/or runway length.

Pilots of NORDO and RONLY aircraft, who have made specific arrangements to
operate within the control zone (RAC 4.4.5 and RAC 4.4.6), should approach the
circuit from the upwind side, join crosswind at circuit height and, taking due account
of other traffic, join the circuit on the downwind leg. Pilots are cautioned to remain
clear of the approach and/or departure path of the active runway when joining the
circuit (see Figure 4.1). Flights which are not in communication with the tower shall, at
all times, be on the alert for visual signals.

Pilots are reminded that below 3 000 feet AGL and within 10 NM of a controlled
aerodrome, aircraft shall not be operated at speeds greater than 200 KT. However,
where the minimum safe speed of the aircraft is greater than 200 KT, the aircraft may
be operated at the minimum safe speed (CAR 602.32).