Regulation 4.67 Security of flight crew compartment — all aircraft
(4) A person must not be allowed to enter the cockpit after the aircraft has taken off unless:(a) he or she is authorised to do so by the aircraft’s pilot in command or the aircraft’s operator and:
(i) is a member of the aircraft’s crew; or
(ii) is an employee of the aircraft’s operator; or
(iii) is authorised or required by the Civil Aviation Regulations 1988 or the Civil Aviation Safety Regulations 1998 to enter the cockpit; and
(b) he or she holds appropriate identification as a person referred to in paragraph (a).
(5) If subregulation (2), (3) or (4) is contravened, the operator of the aircraft concerned commits an offence.
Penalty: 200 penalty units.
Surely your daughter would have entered and been settled into the cockpit well before take off if she was to utilise a jump seat.
The regulation appears to restrict the inflight visitor, not an additional crew seat occupant that has been accepted by the pilot in command.
Seems the operator of the aircraft may be adding their own interpretation here.
VBA Eng.