TM 55-1510-220-10
Figure 3-22. Autopilot/Flight Director Annunciator Panel
d.
Controls/Indicators and Functions.
(a)
NAV ARM annunciator. Illuminates when
computer is armed to accept navigation signals.
(b)
NAV CAP annunciator. With VOR 1, VOR 2,
or TACAN selected, illuminates when selected radial is
captured. With INS selected, illuminates when INS is
coupled to the flight director.
(c)
GS ARM annunciator. Illuminates when
approach mode is selected prior to glideslope capture.
Extinguishes after glideslope capture.
(d)
GS CAP annunciator. Illuminates when
glidescope is captured.
(e)
GA annunciator. Illuminates when go-around
mode is selected.
(f)
BACK LOC annunciator. Illuminates when
back course mode is selected.
3-39
Figure 3-21. Aileron High Torque Test Switch and Annunciation