13.16.1 All equipment to which this chapter applies
should be of a type approved by the Administration. Subject to 13.16.2,
such equipment should conform to performance standards not inferior
to those adopted by the Organization.
13.16.2 Equipment installed before the adoption
of performance standards by the Organization may be exempted from
full compliance with the performance standards having due regard to
the criteria which the Organization may adopt in connection with such
standards.