UJPT, E2-C2, ADV, & IUT RIFP-01
Introduction to Radio Instruments
Sg 11, fr 8
HSI uses acquisition flag marked NAV
Bearing pointer No. 1 located at three oclock (right wing)
NOTE: Acquisition of the localizer will place the NAV flag
out of view.
CDI displays deviation left or right of centerline; each dot
represents 1-1/4 degree deviation (responds 4X as
NOTE: When the localizer information becomes invalid,
the HSI course deviation indicator centers and a red flag,
marked NAV, comes into view.
GS pointer displays deviation above or below glidepath
NOTE: When glideslope information becomes invalid, the
GS pointer will freeze at a random position.
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