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identified in appropriate aeronautical publications.
2/14/08 AIM
Services Available to Pilots 4-1-3
TBL 4-1-1
Summary of Recommended Communication Procedures
Communication/Broadcast Procedures
Facility at Airport Frequency Use Outbound Inbound
Practice
Instrument
Approach
1. UNICOM (No Tower or
FSS)
Communicate with UNICOM
station on published CTAF
frequency (122.7; 122.8; 122.725;
122.975; or 123.0). If unable to
contact UNICOM station, use
self‐announce procedures on
CTAF.
Before taxiing and
before taxiing on
the runway for
departure.
10 miles out.
Entering
downwind, base,
and final. Leaving
the runway.
2. No Tower, FSS, or
UNICOM
Self‐announce on MULTICOM
frequency 122.9.
Before taxiing and
before taxiing on
the runway for
departure.
10 miles out.
Entering
downwind, base,
and final. Leaving
the runway.
Departing final
approach fix
(name) or on final
approach segment
inbound.
3. No Tower in operation,
FSS open
Communicate with FSS on CTAF
frequency.
Before taxiing and
before taxiing on
the runway for
departure.
10 miles out.
Entering
downwind, base,
and final. Leaving
the runway.
Approach completed/
terminated.
4. FSS Closed (No Tower) Self‐announce on CTAF. Before taxiing and
before taxiing on
the runway for
departure.
10 miles out.
Entering
downwind, base,
and final. Leaving
the runway.
5. Tower or FSS not in
operation
Self‐announce on CTAF. Before taxiing and
before taxiing on
the runway for
departure.
10 miles out.
Entering
downwind, base,
and final. Leaving
the runway.
2. The CTAF frequency for a particular airport
is contained in the A/FD, Alaska Supplement, Alaska
Terminal Publication, Instrument Approach Procedure
Charts, and Instrument Departure
Procedure(DP) Charts. Also, the CTAF frequency
can be obtained by contacting any FSS. Use of the
appropriate CTAF, combined with a visual alertness
and application of the following recommended good
operating practices, will enhance safety of flight into
and out of all uncontrolled airports.
c. Recommended Traffic Advisory Practices
1. Pilots of inbound traffic should monitor and
communicate as appropriate on the designated CTAF
from 10 miles to landing. Pilots of departing aircraft
should monitor/communicate on the appropriate
frequency from start‐up, during taxi, and until
10miles from the airport unless the CFRs or local
procedures require otherwise.
2. Pilots of aircraft conducting other than
arriving or departing operations at altitudes normally
used by arriving and departing aircraft should
monitor/communicate on the appropriate frequency
while within 10 miles of the airport unless required to
do otherwise by the CFRs or local procedures. Such
operations include parachute jumping/dropping, en
route, practicing maneuvers, etc.
REFERENCEAIM,
Parachute Jump Aircraft Operations, Paragraph 3-5-4.
d. Airport Advisory/Information Services
Provided by a FSS
1. There are three advisory type services
provided at selected airports.
(a) Local Airport Advisory (LAA) is provided
at airports that have a FSS physically located on
the airport, which does not have a control tower or
where the tower is operated on a part-time basis. The
CTAF for LAA airports is disseminated in the
appropriate aeronautical publications.
AIM 2/14/08
4-1-4 Services Available to Pilots
(b) Remote Airport Advisory (RAA) is
provided at selected very busy GA airports, which do
not have an operating control tower. The CTAF for
RAA airports is disseminated in the appropriate
aeronautical publications.
(c) Remote Airport Information Service
(RAIS) is provided in support of special events
at nontowered airports by request from the airport
authority.
2. In communicating with a CTAF FSS, check
the airport's automated weather and establish
two-way communications before transmitting outbound/
inbound intentions or information. An
inbound aircraft should initiate contact approximately
10 miles from the airport, reporting aircraft
identification and type, altitude, location relative to
the airport, intentions (landing or over flight),
possession of the automated weather, and request
airport advisory or airport information service. A
departing aircraft should initiate contact before
　
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