15.2.1 Stabilization systems should be so designed
that in case of failure or malfunctioning of any one of the stabilization
devices, or equipment, it would be possible either to ensure maintaining
the main parameters of craft's motion within safe limits with the
aid of working stabilization devices or to put the craft into the
displacement or other safe mode.
15.2.2 The Administration should be satisfied
that in case of failure of any automatic equipment or stabilization
device, or its power drive the parameters of craft motion will remain
within safe limits.
15.2.3 Craft fitted with an automatic stabilization
system should be provided with an automatic safety control unless
the Administration is satisfied that the redundancy in the system
provides equivalent safety. Where an automatic safety control is fitted,
provision should be made to override it and to cancel the override
from the main control position.
15.2.4 The Administration should be satisfied
with the parameters and the levels at which any automatic safety control
should give the command to decrease speed and put the craft safely
into the displacement or other safe mode. In considering these parameters,
the Administration should have regard to the safe values of heel,
trim, yaw and combination of trim and draught appropriate to the particular
craft and service; also to the possible consequences of power failure
for propulsion, lift or stabilization devices.
15.2.5 The parameters and the degree of stabilization
of the craft provided by the automatic stabilization system should
be agreed by the Administration having regard to the purpose and service
conditions of the craft.
15.2.6 The requirements for control systems and
warning devices are set out in Chapter 11 and
Chapter 14, Section 3.