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AIM

10/12/17

4−1−2

Services Available to Pilots

management. Its purpose is to familiarize pilots and

aspiring pilots with the ATC system, its functions,

responsibilities and benefits.

REFERENCE−

FAA Order JO 7210.3, Paragraph 4−2−2, Pilot Education

FAA Order 1600.69, FAA Facility Security Management Program

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

further landing information.

c. Where available, use of this procedure will not

hinder the operation of VFR flights by requiring

excessive spacing between aircraft or devious

routing.

d. Compliance with this procedure is not

mandatory but pilot participation is encouraged.

REFERENCE−

AIM, Paragraph 4−1−18 , Terminal Radar Services for VFR Aircraft

NOTE−

Approach control services for VFR aircraft are normally

dependent on ATC radar. These services are not available

during periods of a radar outage. Approach control

services for VFR aircraft are limited when CENRAP is in

use.

4−1−9. Traffic Advisory Practices at

Airports Without Operating Control Towers
(See TBL 4−1−1.)

a. Airport Operations Without Operating

Control Tower

1. There is no substitute for alertness while in

the vicinity of an airport. It is essential that pilots be

alert and look for other traffic and exchange traffic

information when approaching or departing an

airport without an operating control tower. This is of

particular importance since other aircraft may not

have communication capability or, in some cases,

pilots may not communicate their presence or

intentions when operating into or out of such airports.

To achieve the greatest degree of safety, it is essential

that:

(a) All radio−equipped aircraft transmit/re-

ceive on a common frequency identified for the

purpose of airport advisories; and

(b) Pilots use the correct airport name, as

identified in appropriate aeronautical publications, to

reduce the risk of confusion when communicating

their position, intentions, and/or exchanging traffic

information.

2. An airport may have a full or part-time tower

or FSS located on the airport, a full or part-time

UNICOM station or no aeronautical station at all.

There are three ways for pilots to communicate their

intention and obtain airport/traffic information when

operating at an airport that does not have an operating

tower: by communicating with an FSS, a UNICOM

operator, or by making a self-announce broadcast.

NOTE−

FSS airport advisories are available only in Alaska.

3. Many airports are now providing completely

automated weather, radio check capability and airport

advisory information on an automated UNICOM

system. These systems offer a variety of features,

typically selectable by microphone clicks, on the

UNICOM frequency. Availability of the automated

UNICOM will be published in the Chart Supplement

U.S. and approach charts.

b. Communicating on a Common Frequency

1. The key to communicating at an airport

without an operating control tower is selection of the

correct common frequency. The acronym CTAF

which stands for Common Traffic Advisory

Frequency, is synonymous with this program. A

CTAF is a frequency designated for the purpose of

carrying out airport advisory practices while

operating to or from an airport without an operating

control tower. The CTAF may be a UNICOM,

MULTICOM, FSS, or tower frequency and is

identified in appropriate aeronautical publications.

NOTE−

FSS frequencies are available only in Alaska.

3/15/07

7110.65R CHG 2

AIM

9/13/18