CREW
AWARENESS
AIRPLANE
OPERATIONS
MANUAL
2-04-13
Page
8
Code
01
REVISION 39
WARNING ANNUNCIATORS
The red warning annunciators are described as follows:
1 - ATT FAIL
− If either the pitch or roll data fails, the pitch scale marking are
removed, the attitude sphere turns cyan, and ATT FAIL is
displayed in the attitude sphere.
2 - PULL UP
− When the EGPWS indicates a warning condition, PULL UP is
displayed boxed in the upper right corner of the ADI sphere.
3 - AIR DATA COMPUTER FAILURE
− If the ADC fails, the rolling digit displays of airspeed and altitude
are removed, the scale marking are removed and an “X” is
drawn through the scales. If the digital Mach display fails, the
digital readout is replaced with amber dashes.
− In the case of the vertical speed, the current value pointer is
removed, a boxed VS is displayed inside the scale.
4 - VERTICAL DEVIATION FAILURE
− If the radio source driving the vertical navigation scale fails, the
deviation pointer is removed and a red “X” is drawn through the
scale. The scale and pointer are removed for invalid FMS data.
5 - COURSE DEVIATION FAILURE
− If the course deviation data fails, the CDI is removed and a red
“X” is drawn through the scale. The course digital readout is
replaced with amber dashes.
6 - HDG FAIL
− If the heading select signal fails, the heading bug is removed
from the display and HDG FAIL is displayed inside the HSI
compass. This indication is also given in the event of an invalid
heading display.
To Next Page
