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services, assist lost aircraft and aircraft in emergency
situations, relay ATC clearances, originate Notices to
Airmen, broadcast aviation weather and National
Airspace System (NAS) information, receive and
process IFR flight plans, and monitor navigational
aids (NAVAIDs). In addition, at selected locations
FSSs provide En Route Flight Advisory Service
(Flight Watch), take weather observations, issue
airport advisories, and advise Customs and Immigration
of transborder flights.
b. Supplemental Weather Service Locations
(SWSLs) are airport facilities staffed with contract
personnel who take weather observations and provide
current local weather to pilots via telephone or radio.
All other services are provided by the parent FSS.
4−1−4. Recording and Monitoring
a. Calls to air traffic control (ATC) facilities
(ARTCCs, Towers, FSSs, Central Flow, and
Operations Centers) over radio and ATC operational
telephone lines (lines used for operational purposes
such as controller instructions, briefings, opening and
closing flight plans, issuance of IFR clearances and
amendments, counter hijacking activities, etc.) may
be monitored and recorded for operational uses such
as accident investigations, accident prevention,
search and rescue purposes, specialist training and
evaluation, and technical evaluation and repair of
control and communications systems.
b. Where the public access telephone is recorded,
a beeper tone is not required. In place of the “beep”
tone the FCC has substituted a mandatory requirement
that persons to be recorded be given notice they
are to be recorded and give consent. Notice is given
by this entry, consent to record is assumed by the
individual placing a call to the operational facility.
4−1−5. Communications Release of IFR
Aircraft Landing at an Airport Without an
Operating Control Tower
Aircraft operating on an IFR flight plan, landing at an
airport without an operating control tower will be
advised to change to the airport advisory frequency
when direct communications with ATC are no longer
required. Towers and centers do not have nontower
airport traffic and runway in use information. The
instrument approach may not be aligned with the
runway in use; therefore, if the information has not
already been obtained, pilots should make an
expeditious change to the airport advisory frequency
when authorized.
REFERENCE−
AIM, Advance Information on Instrument Approach, Paragraph 5−4−4.
4−1−6. Pilot Visits to Air Traffic Facilities
Pilots are encouraged to visit air traffic facilities
(Towers, Centers and FSSs) and familiarize themselves
with the ATC system. On rare occasions,
facilities may not be able to approve a visit because
of ATC workload or other reasons. It is, therefore,
requested that pilots contact the facility prior to the
visit and advise of the number of persons in the group,
the time and date of the proposed visit and the primary
interest of the group. With this information available,
the facility can prepare an itinerary and have someone
available to guide the group through the facility.
AIM 2/19/04
4−1−2 Services Available to Pilots
4−1−7. Operation Take-off and Operation
Raincheck
Operation Take-off is a program that educates pilots
in how best to utilize the FSS modernization efforts
and services available in Automated Flight Service
Stations (AFSS), as stated in FAA Order 7230.17,
Pilot Education Program − Operation Takeoff.
Operation Raincheck is a program designed to
familiarize pilots with the ATC system, its functions,
responsibilities and benefits.
4−1−8. Approach Control Service for VFR
Arriving Aircraft
a. Numerous approach control facilities have
established programs for arriving VFR aircraft to
contact approach control for landing information.
This information includes: wind, runway, and
altimeter setting at the airport of intended landing.
This information may be omitted if contained in the
Automatic Terminal Information Service (ATIS)
broadcast and the pilot states the appropriate ATIS
code.
NOTE−
Pilot use of “have numbers” does not indicate receipt of the
ATIS broadcast. In addition, the controller will provide
traffic advisories on a workload permitting basis.
b. Such information will be furnished upon initial
contact with concerned approach control facility. The
pilot will be requested to change to the tower
frequency at a predetermined time or point, to receive
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AIM航空信息手册2004上(89)
