14.7.1 Such means as are necessary should be provided
to enable the operating crew to communicate between and have access
to each other and with other occupants of the craft in both normal
and emergency conditions. Attention is drawn to 2.4.2(b).
14.7.2 Provision should be made for means of communication
between the position from which the craft is navigated and spaces
where essential machinery and arrangements are accommodated, irrespective
of whether they are remotely or only locally controlled.