Section 12 of 18

Crossing airspace and zones

(Airspace, Zones and Transits)

Airspace is classed A–G: controlled is A, B, C, D, E (no Class B is used in the UK); uncontrolled is F and G (no Class F is used in the UK, G is the "Open FIR"). This section is about the radio side of moving through it.

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