T-45C TS, ADV & IUT ENG-19
Flight Instruments
b.
Horizontal Situation Indicator (HSI), an
Sg 1, fr 5, 7
electronic display that replicates a standard
Fig 3: Horizontal
electro-mechanical HSI with additional
Situation Indicator
information
(HSI)
(1) Selected by actuating the HSI option
Overlay 1
(2) TACAN data
(3) Planimetric course line
(4) Groundspeed and wind direction/speed
(5) Sequential steering lines
(6) Command heading marker
(7) Waypoint/waypoint offset data
(8) Ground track pointer
(9) TACAN symbol
Overlay 2
(10) Waypoint zero
(11) Waypoint/waypoint offset bearing pointer
(12) Waypoint offset symbol
(13) Aircraft symbol
(14) Heading readout
(15) Course line readout
(16) Waypoint/waypoint offset bearing tail
(17) Lubber line
(18) CDI course line
Overlay 3
(19) VOR bearing
Original (9-98)
Page 19-10
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