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Division 4 Airspace design projects shall be compatible and consistent with the European Route Network Improvement Plan. At least the following changes to airspace design projects require compatibility checking and need to be notified to the Network Manager:

United Kingdom

Original text. Later amendments are not shown.

  1. (a)

    changes in route alignment;

  2. (b)

    changes in route direction;

  3. (c)

    changes in route purpose;

  4. (d)

    free route airspace description, including associated utilisation rules;

  5. (e)

    route utilisation rules and availability;

  6. (f)

    changes in vertical or horizontal sector boundary;

  7. (g)

    addition or removal of significant points;

  8. (h)

    changes in cross-border airspace utilisation;

  9. (i)

    changes to the coordinates of significant points;

  10. (j)

    changes affecting data transfer;

  11. (k)

    changes affecting data published in aeronautical information publications;

  12. (l)

    changes affecting letters of agreement with regard to airspace design and utilisation.