The Transition Plan is a living document, which forms part of the European Network Operations Plan (NOP).
The Transition Plan deals only with scheduled, planned, special events undertaken and managed by ANS, or ANS related entities, e.g. operational stakeholders that could lead to a temporary reduction of capacity and that may require mitigation measures agreed in a partnership approach at Network level. Examples of such events are: implementation of a new ATM system, move to a new ACC Ops room, major airspace reorganisation including change to the ACC area of responsibility, opening of a new airport, etc.