Rules of the Air Article 26

An aircraft operated on or in the vicinity of an aerodrome shall, whether or not within an aerodrome traffic zone:1. observe other aerodrome traffic for the purpose of avoiding collision;2. conform with or avoid the pattern of traffic formed by other aircraft in operation;3. make all turns to the left, when approaching for a landing and after take-off in the traffic pattern, unless otherwise instructed;4. land and take off into the wind unless safety, the runway configuration, or air traffic considerations determine that a different direction is preferable;