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Where any F2application for planning permission F6or permission in principle, for a certificate under section 191 or 192 or for consent to the display of advertisements under section 220, relating in each case to land in a National Park or an application so relating for approval of a matter reserved under an outline planning permission within the meaning of section 92 falls to be determined by a F3National Park authority. . ., that authority shall before determining it consult with F5any authority which (but for section 4A) would be F4. . . the district planning authority for the area in which the land to which the application relates is situated.