TM 1-1510-225-10
3C-10
1. Go-Around Annunciator
2. Flight Director Warning Flag
3. Bank Angle Scale
4. Bank Angle Pointer
5. Attitude Warning Flag
6. Decision Height Annunciator
7. Glideslope Scale
8. Glideslope Pointer
9. Symbolic Miniature Aircraft
10. Radar Altitude Display Bar (Rising Runway)
11. Expanded Localizer Scale
12. Expanded Localizer Indicator
13. Inclinometer
14. Attitude Test Switch
15. Lower (Brown) Eyelid Display
16. Pitch Angle Scale
17. Flight Director Command Cue
18. Upper (Blue) Eyelid Display
Figure 3C-4. Attitude Director Indicator
(16) Pitch Angle Scale – Moves with respect
to the symbolic aircraft reference to display actual
pitch and roll attitude. Pitch attitude marks are in 5
increments on a blue and brown sphere. These colors
are the most contrasting and acceptable display colors
from a human factor standpoint.
(17) Flight Director Command Cue – The
three-dimensional
command
cue
displays
the
computed
steering
commands
to
intercept
and
maintain a desired flight path. The cue moves up or
down to present pitch commands and rotates
clockwise or counterclockwise for roll commands.
(18) Upper (Blue) Eyelid Display – Always
shows the relative position of the sky. Surrounds
upper half of the attitude sphere and provides positive
attitude identification by means of a blue eyelid, which
always shows the relative position of the sky, and a
brown eyelid, which always shows the relative position
of the ground. The eyelids maintain the proper
ground-sky relationship, regardless of the position of
the sphere. This facilitates fast recovery from unusual
attitudes.
3C-15. STANDBY
ATTITUDE
REF ERENCE
SYSTEM.
a. Description.
(1) OSA . The standby attitude reference
system, comprised of the attitude indicator located on
the extreme left center of the pilot's instrument panel
and a 28 Vdc emergency power supply, provide a
visual indication of the aircraft flight attitude. The
attitude reference system is designed to provide a
standby attitude indicator that is powered by a source
independent of the aircraft electrical generating
system. The system will provide reliable attitude
