ANNEX IVU.K.COMMERCIAL AIR TRANSPORT OPERATIONS[PART-CAT]
SUBPART DINSTRUMENTS, DATA, EQUIPMENTU.K.
SECTION 1U.K.Aeroplanes
CAT.IDE.A.190Flight data recorderU.K.
(c)Data shall be obtained from aeroplane sources that enable accurate correlation with information displayed to the flight crew.U.K.