AIM

8/15/19

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36

Arrival Procedures

airport or heliport in sight or, for a helicopter
point

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in

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space approach, the prescribed visual

reference with the surface is established. Also, if, at
any time during the approach the controller considers
that safe guidance for the remainder of the approach
cannot be provided, the controller will terminate
guidance and instruct the pilot to execute a missed
approach. Similarly, guidance termination and
missed approach will be effected upon pilot request
and, for civil aircraft only, controllers may terminate
guidance when the pilot reports the runway,
airport/heliport or visual surface route (point

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in

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space approach) in sight or otherwise indicates that
continued guidance is not required. Radar service is
automatically terminated at the completion of a radar
approach.

NOTE

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1.

The published MDA for straight

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in approaches will be

issued to the pilot before beginning descent. When a
surveillance approach will terminate in a circle

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to

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land

maneuver, the pilot must furnish the aircraft approach
category to the controller. The controller will then provide
the pilot with the appropriate MDA.

2.

ASR APPROACHES ARE NOT AVAILABLE WHEN

AN ATC FACILITY IS USING CENRAP.

3. NO

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GYRO Approach

. This approach is

available to a pilot under radar control who
experiences circumstances wherein the directional
gyro or other stabilized compass is inoperative or
inaccurate. When this occurs, the pilot should so
advise ATC and request a No

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Gyro vector or

approach. Pilots of aircraft not equipped with a
directional gyro or other stabilized compass who
desire radar handling may also request a No

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Gyro

vector or approach. The pilot should make all turns at
standard rate and should execute the turn immediate-
ly upon receipt of instructions. For example, “TURN
RIGHT,” “STOP TURN.” When a surveillance or
precision approach is made, the pilot will be advised
after the aircraft has been turned onto final approach
to make turns at half standard rate.

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12. Radar Monitoring of Instrument

Approaches

a.

PAR facilities operated by the FAA and the

military services at some joint

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use (civil and

military) and military installations monitor aircraft
on instrument approaches and issue radar advisories
to the pilot when weather is below VFR minimums
(1,000 and 3), at night, or when requested by a pilot.
This service is provided only when the PAR Final
Approach Course coincides with the final approach
of the navigational aid and only during the
operational hours of the PAR. The radar advisories
serve only as a secondary aid since the pilot has
selected the navigational aid as the primary aid for the
approach.

b.

Prior to starting final approach, the pilot will be

advised of the frequency on which the advisories will
be transmitted. If, for any reason, radar advisories
cannot be furnished, the pilot will be so advised.

c.

Advisory information, derived from radar

observations, includes information on:

1.

Passing the final approach fix inbound

(nonprecision approach) or passing the outer marker
or fix used in lieu of the outer marker inbound
(precision approach).

NOTE

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At this point, the pilot may be requested to report sighting
the approach lights or the runway.

2.

Trend advisories with respect to elevation

and/or azimuth radar position and movement will be
provided.

NOTE

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Whenever the aircraft nears the PAR safety limit, the pilot
will be advised that the aircraft is well above or below the
glidepath or well left or right of course. Glidepath
information is given only to those aircraft executing a
precision approach, such as ILS. Altitude information is
not transmitted to aircraft executing other than precision
approaches because the descent portions of these
approaches generally do not coincide with the depicted
PAR glidepath.

3.

If, after repeated advisories, the aircraft

proceeds outside the PAR safety limit or if a radical
deviation is observed, the pilot will be advised to
execute a missed approach unless the prescribed
visual reference with the surface is established.

d.

Radar service is automatically terminated upon

completion of the approach.