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AIM

10/12/17

4−1−8

Services Available to Pilots

EXAMPLE−

“Information Sierra received.”

e. When a pilot acknowledges receipt of the ATIS

broadcast, controllers may omit those items con-

tained in the broadcast if they are current. Rapidly

changing conditions will be issued by ATC and the

ATIS will contain words as follows:

EXAMPLE−

“Latest ceiling/visibility/altimeter/wind/(other condi-

tions) will be issued by approach control/tower.”
NOTE−

The absence of a sky condition or ceiling and/or visibility

on ATIS 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,” or the existing weather may be broadcast.

f. Controllers will issue pertinent information to

pilots who do not acknowledge receipt of a broadcast

or who acknowledge receipt of a broadcast which is

not current.

g. To serve frequency limited aircraft, FSSs are

equipped to transmit on the omnirange frequency at

most en route VORs used as ATIS voice outlets. Such

communication interrupts the ATIS broadcast. Pilots

of aircraft equipped to receive on other FSS

frequencies are encouraged to do so in order that these

override transmissions may be kept to an absolute

minimum.

h. While it is a good operating practice for pilots

to make use of the ATIS broadcast where it is

available, some pilots use the phrase “have numbers”

in communications with the control tower. Use of this

phrase means that the pilot has received wind,

runway, and altimeter information ONLY and the

tower does not have to repeat this information. It does

not indicate receipt of the ATIS broadcast and should

never be used for this purpose.

4−1−14. Automatic Flight Information

Service (AFIS) − Alaska FSSs Only

a. AFIS is the continuous broadcast of recorded

non−control information at airports in Alaska where

an FSS provides local airport advisory service. Its

purpose is to improve FSS specialist efficiency by

reducing frequency congestion on the local airport

advisory frequency.

1. The AFIS broadcast will automate the

repetitive transmission of essential but routine

information (for example, weather, favored runway,

braking action, airport NOTAMs, etc.). The informa-

tion is continuously broadcast over a discrete VHF

radio frequency (usually the ASOS frequency).

2. 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 broadcasts are updated upon receipt

of any official hourly and special weather, and

changes in other pertinent data.

3. 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 FSS 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.”

b. 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.

c. 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.”

d. 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