Continuous assessment of fatigue risk
173.—(1)  An AOC holder must monitor the fatigue of its crew members and ensure that its approved fatigue risk management programme remains effective.
(2)  An AOC holder must assess the effectiveness of its approved fatigue risk management programme (including any approved changes made to the programme) in mitigating fatigue risks to an acceptable level whenever the AOC holder —
(a)introduces a new approved fatigue risk management programme;
(b)undertakes a new route; or
(c)makes changes to an established operating pattern which a crew member is accustomed to.