Paragraph 15 Radio communication equipment

Where required by the notified airspace being flown aircraft must be equipped with radio communication equipment capable of conducting two-way communication with those aeronautical stations and on those frequencies to meet airspace requirements.

The radio communication equipment mentioned in sub-paragraph (1) must provide for communication on the aeronautical emergency frequency 121.5MHz.

When more than one communication equipment unit is required, each must be independent of the others to the extent that a failure in any one will not result in failure of any other.