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Sept 04
7-109
P I LOT T R A I N I N G GU I D E
ELECTRONIC DISPLAY SYSTEM
ELECTRONIC DISPLAY SYSTEM EICAS MESSAGES
GX_07_085
CHECK PFD
ADC 1 MISCMP
ADC 2 MISCMP
ADC 3 MISCMP
ALL IRS MISCMP
ASCB CTRL 1 FAIL
ASCB CTRL 2 FAIL
ASCB CTRL 3 FAIL
ASCB FAIL
CAT 2 INVALID
DISP CTLS FAIL
HUD FAIL
HUD MISCOMPARE
ALL ADC MISCMP
CHECK DU 1
CHECK DU 2
CHECK DU 3
CHECK DU 4
CHECK DU 5
CHECK DU 6
IAC 1 OVHT
IAC 2 OVHT
IAC 3 OVHT
CHECK PFD
Indicates that both PFDs have
misleading data.
ADC 1 (2) (3) MISCOMP
Indicates that respective ADC
has miscompared.
DISP CTLRS FAIL
Loss of communication with all
display controllers.
IRS 1 (2) (3) OVHT
Indicates IRS has an
overtemperature condition.
ALL ADC MISCMP
Indicates that all three ADCs
have miscompared.
ALL IRS MISCMP
Indicates that all three IRSs
have miscompared.
ASCB CTRL 1 (2) (3) FAIL
Indicates loss of
communication with two of
three bus controllers.
ASCB FAIL
Indicates loss of
communication with all three
bus controllers. Loss of all
flight instruments and AFCS
functions.
CAT 2 INVALID
Indicates that CAT 2 conditions
have become invalid after
being enabled.
HUD FAIL
Indicates total loss of Heads-
Up display and functions.
HUD MISCOMPARE
Indicates that the HFGS and
the PFD have different
information.
CHECK DU 1 (2) (3) (4) (5) (6)
Indicates that data from
affected DU does not match
data from sensor.
P I LOT T R A I N I N G GU I D E
ELECTRONIC DISPLAY SYSTEM
7-110 For Training Purposes Only
Sept 04
ELECTRONIC DISPLAY SYSTEM EICAS MESSAGES (Cont)
IRS 1 (2) (3) MISCMP
Indicates that respective IRS
has miscompared.
IRS 1 (2) (3) SET HDG
Indicates IRS has defaulted to
a heading of 360 degrees upon
entering attitude mode.
IAC 1 (2) (3) OVHT
Indicates that IAC has
overheated, resulting in
possible loss of functions.
SG 1 (2) (3) FAIL
Indicates that there is a loss of
communications with affected
SG, or SG is indicating a power
up failure.
GX_07_086
IRS 1 MISCMP
IRS 2 MISCMP
IRS 3 MISCMP
SG 1 FAIL
SG 2 FAIL
SG 3 FAIL
IRS 1 OVHT
IRS 2 OVHT
IRS 3 OVHT
IRS 1 SET HDG
IRS 2 SET HDG
IRS 3 SET HDG
For Training Purposes Only
Sept 04
7-111
P I LOT T R A I N I N G GU I D E
ELECTRONIC DISPLAY SYSTEM
ELECTRONIC DISPLAY SYSTEM EICAS MESSAGES (Cont)
GX_07_087
ADC 1 FAIL
ADC 2 FAIL
ADC 3 FAIL
ADC 1 DEGRADED
ADC 2 DEGRADED
ADC 3 DEGRATED
ASCB BUS FAULT
ASCB CTRL 1 FAULT
ASCB CTRL 2 FAULT
ASCB CTRL 3 FAULT
CHECKLIST MISMATCH
DAU 1A-1B FAIL
DAU 2A-2B FAIL
DAU 3A-3B FAIL
DAU 4A-4B FAIL
DU 1 FAN
DU 2 FAN
DU 3 FAN
DU 4 FAN
DU 5 FAN
DU 6 FAN
HUD FAN FAIL
HUD MISALIGN
ADC 1 (2) (3) FAIL
Indicates that ADC has failed.
ADC 1 (2) (3) DEGRADED
Indicates that ADC is
unreliable. Degraded static
ASCB BUS FAULT error correction.
Indicates ASCB single bus
failure (on ground only). ASCB CTRL 1 (2) (3) FAULT
Indicates loss of
communication with one bus
CHECKLIST MISMATCH controller.
Indicates that checklists are
not identical in all IACs
(on ground only).
DAU 1A-1B (2A-2B) (3A-3B)
(4A-4B) FAIL
Indicates that there is a loss of
communication with the
DAU, or DAU has
failed.
affected
DU 1 (2) (3) (4) (5) (6) FAN
Indicates that DU has
overheated, resulting in
possible loss of functions.
HUD MISALIGN
Indicates that the combiner is
not in the down and locked
position.
HUD FAN FAIL
Indicates loss of Heads-Up
display fan.
P I LOT T R A I N I N G GU I D E
ELECTRONIC DISPLAY SYSTEM
7-112 For Training Purposes Only
Sept 04
ELECTRONIC DISPLAY SYSTEM EICAS MESSAGES (Cont)
GX_07_088
IAC CONFIG MSMTCH
IAC 1 AURAL FAIL
IAC 2 AURAL FAIL
IAC 1 INVALID
IAC 2 INVALID
IAC 3 INVALID
IAC 1 MEM FULL
IAC 2 MEM FULL
IAC 3 MEM FULL
IAC 1 WOW INOP
IAC 2 WOW INOP
IAC 3 WOW INOP
IRS 1 AUX FAIL
IRS 2 AUX FAIL
IRS 3 AUX FAIL
IRS 1 FAIL
IRS 2 FAIL
IRS 3 FAIL
IRS 1 NO ALIGN
IRS 2 NO ALIGN
IRS 3 NO ALIGN
MFD CTLR 1 FAIL
MFD CTLR 2 FAIL
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