Controller input orders A controller input that defines system behaviour according to the actual demand of the operational environment. Controller Pilot Data Link Communications Sometimes referred to as Two-Way Pilot Data Link, is the means of communication between controller and Aircrew, using data link in conjunction with or instead of voice, for ATC. Controller Pilot Data Link Communications Link The technical capability to interchange CPDLC messages established between an Aircraft and an ATSU. Controller Pilot Data Link Communications messages The set of air/ground data link messages used by the CPDLC services. Controller Specified Reminder A reminder that is issued whenever the conditions specified in a controller specified reminder request are satisfied. The reminder will include the details input by the controller with the reminder request and, where appropriate, identification of the associated flight. The reminder is directed at the Sector Controller that originated the request. Controller Specified Reminder Request A message from a controller that serves to specify certain events related to the evolving air traffic situation of which he wishes to be informed at the time of their occurrence. Controller’s Intention Updated flight data which shall be exchanged, as laid down in Letters of Agreement, either simultaneously with or before the corresponding ATC clearance is issued. Controlling One of the basic functions of ATC. Process of intervention which includes the selection of a strategy, the allocation of time and a decision to terminate it. ATCOs direct single aircraft (a/c) or groups of a/c to obtain a desired traffic situation according to the rules and procedures of ATC. Controlling Sector A flight related item that identifies the sector suite that has control of a flight. Convergence Convergence is the coherent evolution of all parties concerned towards the progressive harmonisation and integration of the overall European ATM System. Convergence and Implementation Programme Is the EATCHIP instrument for co-ordinating and monitoring the progress of national and multinational implementation plans to ensure that they remedy the deficiencies identified during EATCHIP Phase I and that they converge to meet the objectives of the ECAC Strategy for the 1990s Convergence and Implementation Programme Document The Convergence and Implementation Programme Document contains all necessary information on common and local convergence and implementation actions pertinent to the harmonisation and integration process within and between (ECAC Members) States participating in EATCHIP. Convergence and Implementation Programme Objective A detailed objective contributing to the achievement of the general operational objectives and/or implementation objectives of the ECAC En-route Strategy; a CIP Objective is often defined with reference to deliverables to be produced in the framework of the EATCHIP Work Programme; it is assigned to ECAC States participating in EATCHIP and has to be achieved by a target date approved by the EATCHIP Project Board.