The Civil Aviation (Navigation Services Charges) Regulations 1991

Services provided outside hours where the intention to land or take-off is not carried out

9.  Whenever, by reason of its having received from the operator or commander of an aircraft notice of intention to make use outside hours of an aerodrome referred to in the Table in regulation 2(1) of these Regulations for landing or take-off or as an alternate aerodrome, the CAA provides navigation services outside hours but the aircraft does not land or take-off there on the occasion specified in the notice, the operator of the aircraft shall pay, in respect of each such aerodrome—

(a) in the case of an intended landing or intended use of the aerodrome as an alternate aerodrome, an amount equal to the surcharge payable under regulation 4(1)(b) of these Regulations on the landing of the aircraft outside hours;

(b) in the case of an intended take-off, an amount equal to the charge, if any, which would have been payable under regulation 4(1)(c) of these Regulations if the aircraft had actually taken off outside hours at the intended time:

Provided that a charge shall not be payable under this regulation if the notice of intention is cancelled not less than 30 minutes before the end of the last period of watch within hours before the time specified in the notice for the intended use of the aerodrome as an alternative aerodrome or for take-off, as the case may be.