T-45C TS, ADV & IUT ENG-19
Flight Instruments
Light
Switch
ON
OFF
Figure 11: STANDBY COMPASS
b.
Compass card floats horizontally within case to
align itself with earth’s magnetic field
c.
Magnetic heading read off card under lubber
line engraved upon lens
d.
Two internal bar magnets compensate for
deviation
e.
Compass indication will lead or lag actual
aircraft heading as shown by GINA on HSI, ADI,
and HUD displays during turns
3.
Controls/switches/indicators: light switch located
above compass
4.
Subsystem interfaces
a.
Power: 5 VAC non-essential bus
b.
Light switch and brightness control functional
when interior lights MIP dimmer control is
rotated out of OFF position
Original (9-98)
Page 19-26
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