4/20/23 

AIM 

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

−

in

−

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

−

 

The published MDA for straight

−

in approaches will be issued to the pilot before beginning descent. When a surveillance 

approach will terminate in a circle

−

to

−

land maneuver, the pilot must furnish the aircraft approach category to the controller. 

The controller will then provide the pilot with the appropriate MDA. 

3.  NO

−

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

−

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

−

Gyro vector 

or approach. The pilot should make all turns at standard rate and should execute the turn immediately 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. 

5

−

4

−

12.  Radar Monitoring of Instrument Approaches 

a. 

PAR facilities operated by the FAA and the military services at some joint

−

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

−

 

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

−

 

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. 

Arrival Procedures 

5

−

4

−

39