An aeroplane operator's exposition must include:
(a) a description of the circumstances in which the operator may assign a cabin crew member who holds more than one valid annual training check under regulation 121.725 for the operator and aeroplane types operated by the operator to duty for a flight of that aeroplane type; and
(b) procedures to ensure that such cabin crew members are assigned to duty for a flight of that aeroplane type only in those circumstances.