t-39 - Chief of Naval Air Training
t-39 - Chief of Naval Air Training
t-39 - Chief of Naval Air Training
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T-<strong>39</strong> FLIGHT PREPARATION STUDENT GUIDE<br />
E-2<br />
the blue "OM" light flashing. The Outer Marker is co-located with the FAF and the<br />
approximate position for glideslope interception. The Middle Marker always transmits at<br />
1300 Hz, is co-located with the MAP or DH, and is indicated by an aural tone and the amber<br />
“MM” light flashing<br />
5. Compass Locators<br />
A Compass Locator is an NDB used in conjunction with, or in place <strong>of</strong> a Middle and/or<br />
Outer Marker. They are tuned up on the ADF (see Mobile Regional ILS 14). You will need<br />
to select the ADF on the Bearing needle on the EHSI. Upon station passage it will swing<br />
from 12 to 6 o'clock.<br />
6. Timed ILS<br />
As a back-up, a timing box near the bottom <strong>of</strong> an approach plate will give the time<br />
required to travel from the Outer Marker (FAF) to the Middle marker (DH/MAP).<br />
For more on the ILS/Localizer system, refer to the AIM (a copy is located in the ready<br />
room). Your instructor will brief and assist you with your first ILS approach, but you still<br />
must function as a crewmember, so try to do as much as you can on your own. If you have<br />
any questions, contact your personal advisor, any T-<strong>39</strong>G instructor, or pilot.