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(FSS) provides local airport advisory service. Its
purpose is to improve FSS Specialist efficiency by
reducing frequency congestion on the local airport
advisory frequency. The AFIS broadcast will
automate the repetitive transmission of essential but
routine information (weather, favored runway,
breaking action, airport NOTAMs, other applicable
information). The information is continuously
broadcast over a discrete VHF radio frequency
(usually the ASOS frequency). Use of AFIS is not
mandatory, but pilots who choose to utilize two−way
radio communications with the FSS are urged to
listen to AFIS, as it relieves frequency congestion on
the local airport advisory frequency. AFIS
31 JULY 08
AIP
United States of America
GEN 3.3−9
15 MAR 07
Federal Aviation Administration Nineteenth Edition
broadcasts are updated upon the receipt of any
official hourly and special weather, worsening
braking action reports, and changes in other pertinent
data. When a pilot acknowledges receipt of the AFIS
broadcast, FSS Specialists may omit those items
contained in the broadcast if they are current. When
rapidly changing conditions exist, the latest ceiling,
visibility, altimeter, wind or other conditions may be
omitted from the AFIS and will be issued by the
Flight Service Specialist on the appropriate radio
frequency.
EXAMPLE−
“Kotzebue information ALPHA. One six five five zulu.
Wind, two one zero at five; visibility two, fog; ceiling one
hundred overcast; temperature minus one two, dew point
minus one four; altimeter three one zero five. Altimeter in
excess of three one zero zero, high pressure altimeter
setting procedures are in effect. Favored runway two six.
Weather in Kotzebue surface area is below V−F−R
minima − an ATC clearance is required. Contact
Kotzebue Radio on 123.6 for traffic advisories and advise
intentions. Notice to Airmen, Hotham NDB out of service.
Transcribed Weather Broadcast out of service. Advise on
initial contact you have ALPHA.”
NOTE−
The absence of a sky condition or ceiling and/or visibility
on Alaska FSS AFIS indicates a sky condition or ceiling of
5,000 feet or above and visibility of 5 miles or more. A
remark may be made on the broadcast, “the weather is
better than 5000 and 5.”
9.2.4.4.2 Pilots should listen to Alaska FSSs AFIS
broadcasts whenever Alaska FSSs AFIS is in
operation.
NOTE−
Some Alaska FSSs are open part time and/or seasonally.
9.2.4.4.3 Pilots should notify controllers on initial
contact that they have received the Alaska FSSs
AFIS broadcast by repeating the phonetic alphabetic
letter appended to the broadcast.
EXAMPLE−
“Information Alpha received.”
9.2.4.4.4 While it is a good operating practice for
pilots to make use of the Alaska FSS AFIS broadcast
where it is available, some pilots use the phrase “have
numbers” in communications with the FSS. Use of
this phrase means that the pilot has received wind,
runway, and altimeter information ONLY and the
Alaska FSS does not have to repeat this information.
It does not indicate receipt of the AFIS broadcast and
should never be used for this purpose.
CAUTION−
All aircraft in the vicinity of an airport may not be in
communication with the FSS.
9.2.5 Information Provided by Aeronautical
Advisory Stations (UNICOM)
9.2.5.1 UNICOM is a nongovernment air/ground
radio communication station which may provide
airport information at public use airports where there
is no tower or FSS.
9.2.5.2 On pilot request, UNICOM stations may
provide pilots with weather information, wind
direction, the recommended runway, or other
necessary information. If the UNICOM frequency is
designated as the CTAF, it will be identified in
appropriate aeronautical publications.
9.2.5.3 Unavailability of Information from FSS
or UNICOM. Should LAA by an FSS or
Aeronautical Advisory Station UNICOM be unavailable,
wind and weather information may be
obtainable from nearby controlled airports via
Automatic Terminal Information Service (ATIS) or
Automated Weather Observing System (AWOS)
frequency.
9.2.6 Self−Announce Position and/or Intentions
9.2.6.1 General. Self-announce is a procedure
whereby pilots broadcast their position or intended
flight activity or ground operation on the designated
CTAF. This procedure is used primarily at airports
which do not have an FSS on the airport. The
self-announce procedure should also be used if a pilot
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