Chapter 3 (Flight plans), and Chapter 14, Paragraph 14.1.4 (Flight information region boundaries estimates) of Regional Supplementary Procedures, Doc. 7030/4 — EUR, Part 1, Rules of the Air, Air Traffic Services and Search and Rescue, (Fourth edition — 1987, incorporating Amendment No 210).
Hoofdstuk 3 („Flight plans”) en hoofdstuk 14, punt 14.1.4 („Flight information region boundaries estimates”) van de „Regional Supplementary Procedures”, Doc 7030/4 — EUR, Deel 1, „Rules of the Air, Air Traffic Services and Search and Rescue”, (Vierde editie 1987 — inclusief amendment nr. 210).