The Air Navigation Order 2009

PART B Records required in accordance with article 206(5)(b)

4.  Each record made by the apparatus provided in compliance with article 206(2) or (3) must be adequately identified and in particular must include—

(a) the identification of the aeronautical radio station;

(b) the date or dates on which the record was made;

(c) a means of determining the time at which each message or signal was transmitted or received;

(d) the identity of the aircraft to or from which and the radio frequency on which the message or signal was transmitted or received; and

(e) the time at which the record started and finished.