Section 1. General
- The procedures and phraseologies contained in this chapter apply to inter-facility and intra-facility telephone communications conducted from any position of operation.
- Interphone use is restricted to authorized official business only.
- Monitor interphones continuously. At facilities without ringers, keep speaker volume at a level sufficient to hear all transmissions. In the event of interphone failure, use authorized back-up procedures; for example, commercial telephone, aircraft radio relay.
- Use the words or phrases in interphone communications as contained in the Pilot/Controller Glossary.
- INTERPHONE TRANSMISSION PRIORITIES
Give priority to interphone transmissions as follows:
- First priority. Emergency messages including essential information on aircraft accidents or suspected accidents. After actual emergency has passed, give a lower priority to messages relating to an accident.
- Second priority. Clearance and control instructions.
- Third priority. Movement and control messages using the following order of precedence when possible:
- Progress reports.
- Departure or arrival reports.
- Flight plans.
- Fourth priority. Movement messages on VFR aircraft.
- Fifth priority. NOTAM coordination.
- Sixth priority. Administrative messages; for example, outages.
- PRIORITY INTERRUPTION
Use the words “emergency” or “control” for interrupting lower priority messages when you have an emergency or control message to transmit.
- MESSAGE INITIATION
Initiate interphone messages as follows:
- Assure line is not in use.
- If line is not in use, establish contact with the desired facility and/or position.
Manual signaling (Ring Line):
FSS-(Calls Center via DA/IA Line).
Center- “Anchorage Center” or “Sector D-5.”
FSS- “Kenai radio. Kenai progress Apache One Two Three.”
Center- “Go ahead”
FSS- “Over Kenai...etc.” “L-H”
Voice signaling (Shout Line):
FSS- “Fort Worth Center, Fort Worth Radio, Clearance Request.“
Center “Fort Worth Center, Go Ahead.”
FSS- “Request Clearance, Army ......etc.”
- When calling or replying on an interphone line which connects only two facilities, you may omit the facility's name.
“Radio, inbound estimate.”
- Inflight position. State the name of the FSS/sector followed by the word “RADIO” and position, if appropriate.
- MESSAGE TERMINATION
Terminate interphone messages with your operating initials.