2-4-12

Interphone Message Format

JO 7110.65BB, Change 3, effective July 9, 2026 · Official text on faa.gov

Use the following format for interphone intra/interfacility communications:

Both the caller and receiver identify their facility and/or position in a manner that ensures they will not be confused with another position.
Note

Other means of identifying a position, such as substituting departure or arrival gate/fix names for position identification, may be used. However, it must be operationally beneficial, and the procedure fully covered in a letter of agreement or a facility directive, as appropriate.

Example

Caller: “Albuquerque Center Sixty Three, Amarillo Departure.”

Receiver: “Albuquerque Center.”
Between two facilities which utilize numeric position identification, the caller must identify both facility and position.
Example

Caller: “Albuquerque Sixty Three, Fort Worth Eighty Two.”
Caller states the type of coordination to be accomplished when advantageous. For example, handoff or APREQ.
The caller states the message.
The receiver states the response to the caller's message followed by the receiver's operating initials.
The caller states his or her operating initials.
Example
1. Caller: “Denver High, R Twenty‐five.”
  Receiver: “Denver High.”
  
  Caller: “Request direct Denver for Delta Three Twenty‐eight.”
  
  Receiver: “Delta Three Twenty‐eight direct Denver approved. H.F.”
  
  Caller: “G.M.”
2. Receiver: “Denver High, Go ahead override.”
  Caller: “R Twenty‐five, Request direct Denver for Delta Three Twenty‐eight.”
  Receiver: “Delta Three Twenty‐eight direct Denver approved. H.F.”
  Caller: “G.M.”
3. Caller: (“Bolos” is a departure gate in Houston ARTCC's Sabine sector)-“Bolos, Houston local.”
  
  Receiver: “Bolos.”
  
  Caller: “Request Flight Level three five zero for American Twenty‐five.”
  
  Receiver: “American Twenty‐five Flight Level three five zero approved, A.C.”
  
  Caller: “G.M.”
4. Caller: “Sector Twelve, Ontario Approach, APREQ.”
  Receiver: “Sector Twelve.”
  
  Caller: “American Five Forty‐two heading one three zero and climbing to one four thousand.”
  
  Receiver: “American Five Forty‐two heading one three zero and climbing to one four thousand approved. B.N.”
  
  Caller: “A.M.”
5. Caller: “Zanesville, Columbus, seventy‐three line, handoff.”
  
  Receiver: “Zanesville.”
  
  Caller: “Five miles east of Appleton VOR, United Three Sixty‐six.”
  
  Receiver: “United Three Sixty‐six, radar contact, A.Z.”
  
  Caller: “M.E.”
Identify the interphone voice line on which the call is being made when two or more such lines are collocated at the receiving operating position.
Example

“Washington Center, Washington Approach on the Fifty Seven line.”
“Chicago Center, O'Hare Tower handoff on the Departure West line.”
TERMINAL. The provisions of subparagraphs a, b, c, e, f, g, and paragraph 2-4-13, Interphone Message Termination, may be omitted provided:
1. Abbreviated standard coordination procedures are contained in a facility directive describing the specific conditions and positions that may utilize an abbreviated interphone message format; and
2. There will be no possibility of misunderstanding which positions are using the abbreviated procedures.