TM 1-1510-218-10
3A-21
1. Crossed Needles
2. Bank Angle Pointer
3. Bank Angle Index
4. Bank Angle Scale
5. Horizon Line
6. CMPTR Flag
7. Miniature Aircraft
8. Lateral Deviation Indicator
9. Sphere
10. GYRO Flag
11. TEST Push Button
12. GS Flag
13. Vertical Deviation Indicator
Figure 3A-10. Pilot’s Horizon Reference Indicator
NOTE
When flying coupled to the GPS system,
the CMPTR flag will be in view any time the
steering
information
is
invalid
or
a
malfunction
exists
in
the
autopilot
computer.
(7) Miniature Aircraft. Indicates attitude of
aircraft with respect to the earth's horizon.
(8) Lateral Deviation Indicator. Displays
localizer deviation information from VOR #1 receiver.
(9) Sphere. Remains oriented with the
earth's axis at all times.
(10) GYRO Flag. Presence indicates loss of
power to, or low rotational speed of, vertical gyro.
(11) TEST Push Button. When pressed,
display indicates an additional 10° nose up and 20°
right roll and the GYRO flag is visible.
(12) GS Flag. Presence indicates glideslope
information is not being presented on indicator.
(13) Vertical Deviation Indicator. Displays
glideslope deviation information from VOR No. 1
receiver.
3A-18. COPILOT'S ATTITUDE INDICATOR.
a. Description. The copilot's attitude indicator
is a flight instrument that indicates the aircraft's
attitude. The indicator is designed to operate through
all attitudes. There are no front panel fuses or circuit
breakers provided for the copilot's attitude indicator.
Refer to Figure 3A-11.
b. Controls/Indicators and Functions.
(1) Bank Angle Scale. Allows measurement
of aircraft bank angle from zero to 90° with marks at
10, 20, 30, 45, 60, and 90°.
(2) Bank Angle Index. Reference indicating
zero-degree bank.
