Interphone Transmission Priorities

Give priority to interphone transmissions as follows:

1. First priority. Emergency messages including essential information on aircraft accidents or suspected accidents. After an actual emergency has passed, give a lower priority to messages relating to that accident.
2. Second priority. Clearances and control instructions.
3. Third priority. Movement and control messages using the following order of preference when possible:
   1. Progress reports.
   2. Departure or arrival reports.
   3. Flight plans.
4. Fourth priority. Movement messages on VFR aircraft.