Quantcast Procedures - P-8710125

 

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T-6A INSTRUMENT NAVIGATION
CHAPTER FIVE
With a LOC frequency selected, the CDI is 4 times more sensitive (each mark indicates 1/2 of
deviation, with a full-scale deflection of + 2 1/2 from CDI centerline). The CDI will display
whether the aircraft is right or left of course regardless of the course selected with the course set
knob, the TO/FROM flag will disappear from view, and the VOR needle will no longer be
displayed on the EHSI.
The LOC approach comes in different forms and will require the pilot to execute the correct
procedures. They may require 1 of the 3 types of procedure track approaches: an arc to final, a
straight-in approach, or a procedure turn. However, radar vectors to final will be the most
common procedure used to get the aircraft established on the FAC. These types of approaches
have been previously discussed. A LOC is considered a non-precision approach and uses a MAP
vice a DH. With this in mind, there are several procedural differences between an ILS and a
LOC approach.
NOTE
Normally, radar vectors to the FAC are utilized for LOC
approaches. Refer to this section in the FTI for further amplifying
procedures.
PROCEDURES
1.
Tune and identify the station:
a.
Tune: Tune the proper LOC frequency.
b.
Identify: Identify the station with Morse Code.
c.
Monitor: Navigation information is reliable only when:
i.
The warning indicator (red X) is not displayed.
ii.
The station identifier is received.
iii.
The aircraft is in the usable range of the equipment.
d.
Confirm: Confirm the correct source for the CDI.
e.
Twist: Twist the FAC into the CDI so the aircraft heading/LOC relationship is
displayed. Usually, you will be vectored to the FAC so don't delay this step.
Normally a 20 - 30 degree intercept is provided.
TERMINAL PROCEDURES
5-45


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