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2.
I.
(4)
(c)
Symbol
Generator
3 (EICAS
Normal)
Fai 1ure
A failure
of SG No. 3 would
show
itself
in one of the
following
manners:
.
Red X on the ENGINE display
Red X on the CAS display
.
Red X on both the ENGINE and CAS displays
The reversionary
mode
for this
failure
is to select
the
EICAS
SG reversionary
knob
from the NORM
to the ALT position.
The SG
driving
the copilot's
PFD and ND at that moment,
normally
SG
No. 2, would
then
drive
the EICAS displays
as well
as the
copilot's
PFD and
ND.
If SG No. 2
control
was
selected
to
the
alternate
position
prior
to
the
SG
No.
3 failure,
then
SG
No.
1
would
be
in use
by
all
six
DUS
and
a multiple
SG
failure
condition
would
exist
(refer
to
paragraph
2.I.(4)(d)).
(d) Multiple SG Failures - A single SG is capable of driving the
six DUS in the G-IV EFIS/EICAS system
in the
event
that
any
two
SGS
fail.
The pilot's and
copilot's
PFD and NDwould
be
identical
in this case.
All
same
source
indications
(amber
source annunciations) would be on each display. The sinqle SG
reverts to the pilot~s DC for display command;
which SG is driving the six DUS.
If the pilot
single SG reverts to the copilot's DC for disp"
(5) Display Controller Failures
regardles~ of
s DC fails, the
ay commands.
(a)
Pilot's DC Fails - In the event that the pilot's DC fails, the
SG driving the pilot's displays automatically revert to the
following display source
selections:
~
@
IRS 1
MAP Mode
DADC 1
FMS 1
NAV 1
ID WAYPT
RADALT
1
RAD ALT SET - 200
BRG - AUTO
BARO - IN
FD CMD - SC
22-14-00
Page
298.33
Aug 15/91
Use or
disclosure
of
information
on
this
page
is
subject
to
the
restrictions
on
the
title
page
of
this
document.
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