221 Lesson 19
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Dec 6, 2023
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221 Lesson 19 (FTD)
Reading
IFH chapter 7
Worksheet:
1.
How does the RMI differ from ADF?
-
ADF is the airborne receiver for NDB; need manual adjustment or calculation to
intercept
-
RMI automatically rotates to match aircrafts’ heading; needle always indicates
magnetic bearing to the station
2.
Using the RMI to navigate off the VOR how do we set it and turn the RMI on?
-
Turn on the bearing and tune to the NAV source for VOR
3.
Using the RMI how do we determine where we are from the VOR?
-
Look at the tail and it indicates the radial you are on from the VOR
4.
What is the difference between Tracking and Homing to the station?
-
Tracking – maintaining a constant magnetic bearing for wind correction
-
Homing – maintaining a relative bearing of 0 degree.
5.
Describe how you would orientate the RMI needle to stay the same DME while arcing.
-
Keep RMI needle 90 degrees with the wind correction diamond to maintain in the
arc.
6.
When do we start to turn when establishing ourselves on an arc?
-
About +/- 0.5 NM
7.
What ground equipment is associated with the localizer system?
-
VHF localizer, UHF glideslope transmitter
8.
What airborne equipment is required to use a localizer?
-
VOR
9.
How do we tune and identify a localizer?
-
Tune to the localizer frequency using VOR and look for the identification name next
to frequency. Or listen to the frequency
221 Ed. 13
10. The localizer course is very narrow, approximately how many degrees?
-
Normally 5 degrees wide (2.5 degrees each side)
11. The localizer will provide course guidance on runway centerline approximately how
many NM?
-
About 18NM
12. Define reverse sensing.
-
When the VOR and localizer are not set to appropriate radial, it indicates the
opposite of what we expect. Instrument thinks as if we are going the opposite
direction
13. How do we avoid reverse sensing?
-
We set the appropriate radial for VOR’s and localizer
14. Describe how you would set your instruments to arc to a localizer course.
-
Maintain the arc using the RMI and intercept with localizer tuned in VOR
15. What are some common errors when using a localizer?
-
Reflection. Surface vehicles and even other aircraft flying below 5,000 feet above ground
level (AGL) may disturb the signal for aircraft on the approach.
-
False courses.
221 Ed. 13
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