accounting periodmeans a period of twenty–four hours commencing at the beginning of any day on which an occasional operator carries chargeable passengers on a chargeable aircraft.”
authorised operatormeans an operator who has been authorised by the Commissioners under regulation 10B(1) and “authorised” and “authorisation” shall be construed accordingly;
current accounting yearmeans the period of 12 months beginning on 1st April and ending on 31st March;
occasional operatormeans an operator who satisfies the Commissioners that, in any period of 12 months beginning on any day during which the operator uses for a flight a chargeable aircraft for the carriage of any chargeable passengers, the number of such flights will not exceed 12;”
the schememeans the annual accounting scheme established by regulations 10B to 10E;
transitional accounting periodmeans the period beginning on the first day of the month in which the Commissioners authorise the operator to use the scheme and ending on 31st March next following that day. 10B 1 The Commissioners may authorise an operator to pay and account for duty by reference to any transitional accounting period, and any subsequent current accounting year. 2 An operator is eligible to apply for authorisation under paragraph (1) if the operator has reasonable grounds for believing that the amount of duty that will become due from the operator in the period of 12 months beginning on the date of the application for authorisation will not exceed £500,000. 10C The Commissioners may refuse to authorise an operator under regulation 10B(1) where— a the operator has failed to furnish a return in accordance with regulation 9;