2/14/08 JO 7110.10T
Radio Communications 4-3-1
Section 3. Radio Communications
4-3-1. FREQUENCY USE
a. Use radio frequencies for the specific purposes
for which they are assigned. A frequency may be used
for more than one function when required. Use the
minimum number of frequencies to conduct
communications. Request pilots file flight plans on
discrete frequencies when possible.
b. Monitor assigned radio frequencies continuously.
Keep speaker volumes at a level sufficient to
hear all transmissions.
4-3-2. AUTHORIZED TRANSMISSIONS
a. Transmit only those messages necessary for
safe and efficient use of the National Airspace System
(NAS).
1. Relay operational information to an aircraft
or its company, as requested, when abnormal
conditions necessitate such requests. Do not agree to
handle such messages on a regular basis.
2. Relay official FAA messages as required.
b. Inform an aircraft of the source of any message
you relay from an airport manager, a military
commander, or other appropriate authority.
c. Use the words or phrases in radio communications
as contained in the Pilot/Controller Glossary.
4-3-3. RADIO MESSAGE FORMAT
Initiate radio communications with an aircraft by
using the following format:
a. Initial call up.
1. State the prefix “November” when establishing
initial communications with U.S. Registered
aircraft followed by the phonetic pronunciation of the
numbers/letters of the aircraft registration.
2. Identification of the calling unit.
3. The type of message to follow when this will
assist the pilot.
4. The word over, if required.
EXAMPLE-
“November Three Four Seven Seven Papa, Fort Worth
Radio, over.”
“November Three Four Seven Seven Papa, Fort Worth
Radio, A-T-C clearance, over.”
b. Replying to call up from aircraft.
1. Identification of the aircraft initiating the call
up. Use the full identification in reply to aircraft with
similar sounding identifications. For other aircraft,
use the same identification the pilot used in initial call
up; then use the correct identification after
communications have been established.
2. Identification of the replying unit.
3. The word over, if required.
c. The word heavy shall be used as part of the
identification in communications with or about
heavy jet aircraft when providing airport advisories.
PHRASEOLOGYUNITED
FIFTY-EIGHT HEAVY
NOTE-
1. Most airlines will use the word heavy following the
company prefix and trip number when establishing
communications or when changing frequencies.
2. When in radio-telephone communications with “Air
Force One,” do not add the heavy designator to the call
sign. State only the call sign “Air Force One” regardless
of the type of aircraft.
d. Preface a clearance or instruction intended for
a specific aircraft with the identification of that
aircraft.
e. Emphasize appropriate digits, letters, or similar
sounding words to aid in distinguishing between
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