(1)This section defines these expressions (here listed alphabetically) for the purposes of sections 93 and 94 and this section—
(a)aerodrome;
(b)airport, and its operator;
(c)great national emergency;
(d)relevant asset, and a person who owns or operates it;
(e)United Kingdom air transport undertaking.
(2)A great national emergency is a natural disaster or other emergency which the Secretary of State thinks is or may be likely to give rise to such disruption of the means of transport that the population, or a substantial part of the population, of the United Kingdom is or may be likely to be deprived of essential goods or services.
(3)An aerodrome is an aerodrome as defined in section 105(1) of the [1982 c. 16.] Civil Aviation Act 1982.
(4)An airport is the aggregate of the land, buildings and works comprised in an aerodrome; and a person operates an airport if he manages it.
(5)A United Kingdom air transport undertaking is an undertaking which appears to the Secretary of State to have its principal place of business in the United Kingdom and which includes the provision of services for the carriage by air of passengers or cargo for hire or reward.
(6)A relevant asset is any—
(a)aerodrome,
(b)property used in connection with the operation of an aerodrome,
(c)aircraft, or
(d)property used in connection with the provision of air traffic services.
(7)An owner of a relevant asset is a person—
(a)who owns it or has a right over or interest in it, and
(b)whose consent is needed for its use by any other person.
(8)An operator of a relevant asset is a person who manages it.