OBS_VALUE: ACL was appointed as the independent coordinator of airports in New Zealand in September 2012. Slot Coordination is performed in accordance with the IATA Worldwide Slot Guidelines (WSG). According to the guidelines, an airline is entitled to retain a series of slots on the basis of historic precedence. The first priority of slot allocation is historic slots requested as unchanged or with changes that do not impact the coordination parameters. Within each category (new entrant requests, non-new-entrant requests, and requests for changes to historic slots), a request to extend an existing operation to operate on a year-round basis should have priority over a new slot request (para 8.3.5.1).See also: https://www.iata.org/contentassets/4ede2aabfcc14a55919e468054d714fe/wasg-annex-12.1.pdf