AIRPLANE
OPERATIONS
MANUAL
FLIGHT
INSTRUMENTS
REVISION 37
2-17-20
Page
15
Code
01
AOM-145/1114
LABEL MEANING ACTION
M (white digit
inside a red
filled box)
Indicates loss of Mach
number function. It is
displayed instead of the
Mach number.
Report to
maintenance.
MAINT (white
digits)
Indicates a parity error
presented by the discrete
inputs. In this case, the
previous discrete input
configuration is maintained.
Report to
maintenance.
OUT OF
ORDER
(white digits)
Indicates failure detection
with loss of integrity. It is
displayed with the
associated code failure.
The associated parameters
are saved in memory for
future equipment
maintenance.
Report to
maintenance.
SPD (white
digits over a
red filled box)
Indicates loss of airspeed
function. It is displayed
instead of the airspeed
scale.
Report to
maintenance.
VMO (white
digits over a
red filled box)
Indicates VMO error. It is
displayed in the upper left
corner of the screen, in lieu
of the “MAINT” flag.
Report to
maintenance.
WAIT ATT
(black digits
over an yellow
filled box)
Indicates that IMU is out of
domain attitude. In this
case, the roll and pitch
scale, the lateral
acceleration, and the
airplane symbol are not
displayed. It is displayed in
the upper mid-section of
the screen.
Report to
maintenance.
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