11.2.1 Failure of any remote or automatic control
systems should initiate an audible and visual alarm and should not
prevent normal manual control.
11.2.2 Manoeuvring and emergency controls should
permit the operating crew to perform the duties for which they are
responsible in a correct manner without difficulty, fatigue or excessive
concentration.
11.2.3 Where control of propulsion or manoeuvring
is provided at stations adjacent to but outside the operating compartment,
the transfer of control should only be effected from the station which
takes charge of control. Two-way voice communication should be provided
between all stations from which control functions may be exercised
and between each such station and the look-out position. Failure of
the operating control system or of transfer of control should bring
the craft to low speed without hazarding passengers or the craft.
11.2.4 For category B craft and cargo craft, remote
control systems for propulsion machinery and directional control should
be equipped with back-up systems controllable from the operating compartment.
For cargo craft, instead of a back-up system described above, a back-up
system controllable from an engine control space such as an engine
control room outside the operating compartment is acceptable.