Section B Operational requirements United Kingdom Original text. Later amendments are not shown. 1Division 1 2Division 2 3Division 3 3aDivision 3a 3bDivision 3b 3cDivision 3c 4Division 4 5Division 5 6Division 6 7Division 7 8Division 8 9Division 9 ← Division 10 Section B Division 1 →