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ANNEX IVU.K.COMMERCIAL AIR TRANSPORT OPERATIONS[PART-CAT]

SUBPART DINSTRUMENTS, DATA, EQUIPMENTU.K.

SECTION 1U.K.Aeroplanes

[F1CAT.IDE.A.345 Communication, navigation and surveillance equipment for operations under IFR or under VFR over routes not navigated by reference to visual landmarks] U.K.
(d)Aeroplanes shall have sufficient navigation equipment to ensure that, in the event of the failure of one item of equipment at any stage of the flight, the remaining equipment shall allow safe navigation in accordance with the flight plan.U.K.