insert--
'(4) A reference in subsection (1)(k) to land owned by a port authority and used by it as a commercial airport includes--
(a) land owned by a wholly owned subsidiary of a port authority that is used as a commercial airport; and
(b) airport land within the meaning given by the Airport Assets (Restructuring and Disposal) Act 2008.
'(4A) A reference in subsection (1)(k)(ii) to the Transport Infrastructure Act 1994, section 286 includes the Airport Assets (Restructuring and Disposal) Act 2008, chapter 3, part 1.
'(4B) Subsection (1)(k)(i) and (ii) stop applying to land on the earlier of--
(a) the coming into force of a development permit under the Integrated Planning Act 1997 for the land for a use other than a use mentioned in subsection (1)(k)(i); or
(b) the start of development within the meaning of Integrated Planning Act 1997, other than reconfiguring a lot, for a use other than a use mentioned in subsection (1)(k)(i).'.