Embraer EMB145 - Page 2602

NAVIGATION AND
COMMUNICATION
AIRPLANE
OPERATIONS
MANUAL
2-18-75
Page
18
Code
01
REVISION 39
AOM-145/1114
ADC1 (2) - Indicates the selected ADC source. “ADC1” indicates
that ADC1 is selected as both Pilot’s and Copilot’s
ADC source. “ADC2” indicates that ADC2 is selected
as the Pilot’s ADC source. Positioned in upper left
portion of the display.
ALT - Horizontal Indication. Indicates Barometric Altitude
failure. Indicated by boxed characters replacing the
Altitude Scale in Primary Mode, and replacement of
Digital Altitude readout in digital modes.
ALT - Vertical Indication. Indicates Barometric Altitude
miscompare. Indicated by boxed characters vertically
positioned at the upper right portion of the altitude
scale in Primary Mode. In all other modes, boxed
“ALT” is vertically positioned at the right side of the
display.
ATT/ROL/PIT - Indicates IRS / AHRS2 Pitch or Roll miscompare, or a
AHRS1 / AHRS2 Attitude miscompare. Indicated by
boxed “PIT”, “ROL”, or “ATT” characters respectively,
beneath the left side of the roll scale.
ATT FAIL - Indicates IRS Pitch or Roll (Attitude) failure or AHRS2
Pitch/Roll failure. Indicated by boxed characters on the
upper portion of the display.
FD FAIL - Indicates Flight Director failure. Positioned in the top
center portion of the display.
G/S - Indicates Glideslope Deviation failure. Indicated by
boxed characters vertically aligned, replacing the
Vertical Deviation Scale and Index.
GS - Indicates Glideslope miscompare. Indicated by boxed
characters to the right of the display center.
HDG - Indicates IRS / AHRS2 Heading miscompare or
AHRS1 / AHRS2 Heading miscompare. Indicated by
boxed characters in the lower left portion of the
display.
HDG FAIL - Indicates IRS Heading failure or AHRS2 Heading
failure. Indicated by boxed characters in the lower
center portion of the display. In Primary mode, this flag
is positioned in the center of the HSI.