Aircraft tracking
51.—(1)  An AOC holder must track the position of every large aeroplane that corresponds to one of the following descriptions, in the manner specified in paragraph (2), while that aeroplane is in flight:
(a)an aeroplane with an MCTOM exceeding 45,500 kg;
(b)an aeroplane with an MCTOM exceeding 27,000 kg but not exceeding 45,500 kg and an MAPSC exceeding 19,
unless the appropriate air traffic service unit is able to do so.
(2)  The aircraft position tracking capability mentioned in paragraph (1) —
(a)must track the position of the aeroplane once every 15 minutes while the aeroplane is in flight;
(b)must not make use of voice reporting High Frequency (HF) radio; and
(c)must, for any flight on or after 8 November 2018, make use of automated reporting.
(3)  In the event that an AOC holder is unable to track a particular aeroplane or flight in accordance with paragraph (2) due to temporary operational constraints, the AOC holder may continue to operate that aeroplane or flight if —
(a)there are appropriate mitigating measures in place for locating the aeroplane when needed;
(b)the AOC holder makes a report of the non‑tracking situation to the Director‑General of Civil Aviation within 72 hours after the termination of the affected flight; and
(c)the procedures to monitor aeroplanes that could not be tracked are in the AOC holder’s Operations Manual.
(4)  An AOC holder must establish procedures in its Operations Manual for the retention of aircraft tracking data to assist in determining the last known position of the aircraft as necessary.