Following an increase in complaints about early turns of jet departures from Runway 16 during quarter 4 of 2013, Airservices contacted airlines about the problem. Airlines have reminded their pilots that aircraft taking off from Runway 16 for destinations to the north and east should only turn to the west once they have reached a waypoint four nautical miles (roughly seven kilometres) south of the airport. Airservices will continue to monitor this issue. Most subsequent instances of this have been found to be due to air traffic control instructions for traffic management reasons.