4.1 If availability is ensured by using a combination
of methods which includes at-sea electronic maintenance capability,
adequate additional technical documentation, tools, test equipment
and spare parts must be carried on board in order to enable the maintainer
to perform tests and localize and repair faults in the radio equipment.
The extent of this additional technical documentation, tools, measuring
equipment and spare parts to be carried on board should be consistent
with the equipment installed and should be approved by the Administration.
An indication of such approval should be entered in the Records of
Equipment (Form P, R or C).
4.2 The person designated to perform functions
for at-sea electronic maintenance should either hold an appropriate
certificate as specified by the Radio Regulations, as required, or
have equivalent at-sea electronic maintenance qualifications, as may
be approved by the Administration, taking into account the recommendationsfootnote of the Organization on the training of
such personnel.