13.2.1 Craft shall be provided with a magnetic
compass which is capable of operating without electrical supply, and
which may be used for steering purposes. This compass shall be mounted
in a suitable binnacle containing the required correcting devices
and shall be suitable for the speed and motion characteristics of
the craft.
13.2.2 The compass card or repeater shall be capable
of being easily read from the position at which the craft is normally
controlled.
13.2.3 Each magnetic compass shall be properly
adjusted and its table or curve of residual deviations shall be available
at all times.
13.2.4 Care shall be taken in siting a magnetic
compass or magnetic sensing element so that magnetic interference
is eliminated or minimized as far as is practicable.
13.2.5 Passenger craft certified to carry 100
passengers or less shall, in addition to the compass required by 13.2.1,
be provided with a properly adjusted transmitting heading device,
suitable for the speed and motion characteristics and area of operation
of the craft, capable of transmitting a true heading reference to
other equipment.
13.2.6 Passenger craft certified to carry more
than 100 passengers and cargo craft shall, in addition to the compass
required in 13.2.1, be provided with a gyro-compass which shall be
suitable for the speed and motion characteristics and area of operation
of the craft.