Advise your supervisor or flow controller as soon as possible when you delay or expect to delay aircraft.
When arrival delays reach or are anticipated to reach 30 minutes, take the following action:
EN ROUTE. The center responsible for transferring control to an approach control facility or, for a nonapproach control destination, the center in whose area the aircraft will land must issue total delay information as soon as possible after the aircraft enters the center’s area. Whenever possible, the delay information must be issued by the first center controller to communicate with the aircraft.
TERMINAL. When tower en route control service is being provided, the approach control facility whose area contains the destination airport must issue total delay information as soon as possible after the aircraft enters its approach control area. Whenever possible, the delay information must be issued by the first terminal controller to communicate with the aircraft.
Unless a pilot requests delay information, the actions specified in subparas 1 and 2 above may be omitted when total delay information is available to pilots via ATIS.