For the purposes of the application of this Subdivision to a building activity that is an element of a major airport development on the airport site for Sydney West Airport:
(a) if:
(i) an airport plan for the airport is in force; and
(ii) the major airport development is covered by Part 3 of the airport plan; and
(iii) the building activity wholly or partly occurs before the Sydney West Airport completion day;
Part 3 of the airport plan is a designated SWA instrument that covers the development; and
(b) if there is a major development plan approved under Division 4 for the major airport development--the major development plan is a designated SWA instrument that covers the development.