TM 1-1510-218-10
3C-20
1. Vertical Capture (ALT Hold)
2. Vertical Arm #1 (GS Armed)
3. Vertical Arm #2 (ALTSEL Armed)
4. Vertical Deviation Scale
5. VNAV Pointer
6. Lateral Deviation Non-Approach Pointer
7. Lateral Capture (HDG Mode Captured)
8. Lateral Arm (VOR APR Armed or LOC Source)
Figure 3C-6. ADI Display Symbology (Sheet 2 of 2)
If an attitude sensor failure occurs, an attitude
flag appears which consists of a red box with black
letters ATT. An attitude flag removes the pitch scale,
roll scale, roll pointer, sky/ground raster, flight director
annunciations and command bars from the display.
(2) The pitch scale, Figure 3C-7, consists of
2.5 increments between 30 to 40 of pitch.
Approximately 40 of the pitch scale is visible at any
given time.
(3) The roll scale displays the current roll
attitude of the aircraft. It rotates about the aircraft
symbol such that the aircraft roll is graphically
indicated on the roll scale. The roll scale contains the
10, 20, 30, 45, and 60 increments. The rest of
the scale is white. If the roll input is invalid or
unavailable, the roll scale and pointer are removed
from the screen and the ATT flag appears.
(4) If the pitch attitudes exceed +30 or -20
or if the bank attitude exceeds 65 all information
