EFIS SELF-TEST
TEST Symbology on EADI
•
The TEST display is invoked by the acti-
vation of the TEST pushbutton on the DC-
810.
•
The TEST pattern will be displayed only
as long as the pushbutton is depressed.
•
For the first 4 seconds, the TEST pattern
shows all comparators.
•
After 4 seconds, all comparators are re-
moved and all flags are displayed with
their corresponding logic.
•
For the whole duration of the test, an amber
TEST is displayed on EADI.
•
If the aircraft is in the air, only radio al-
timeter is tested.
•
If the aircraft is on the ground and the
TEST function is performed, the SG will
reset to power-up configuration after test.
TEST Symbology on EHSI
•
The TEST display is invoked by the acti-
vation of the PUSH TEST pushbuffon on
the DC-810.
•
The TEST pattern will be displayed only
as long as the pushbutton is depressed.
•
For the first 4 seconds, the TEST pattern
shows the IRS comparator.
•
After 4 seconds, all flags are displayed
with their corresponding logic.
•
If the aircraft is in the air, only the radio
altimeter will be tested.
•
If the aircraft is on the ground and the TEST
function is performed, the SG will reset to
power-up configuration after TEST.
EFIS FAILURE MODES &
REVERSIONS
There are several failure modes and rever-
sions possible with the EFIS system.
Complete Symbol Generator Failure
Both tubes on the respective side go black
(depending on the nature of the failure, there
may be a red "SG" annunciated in the center
of each tube)
Action: Either A or B below
a. Press the "SG reversion switchlight on the
reversionary panel (Figure 16A-6). This
will allow the opposide side SG to power
its own side plus the failed side. All set-
tings (heading, course, etc.) will have to
be made on the operable S.G. sides
b. Select "SG" toward the failed side on the
MC-800 MFD controller (Figure 16A-13).
This will allow the MFD S.G. to power
the failed side tubes. Settings (heading,
course, etc.) can be made on the failed
side. The MFD tube will now be blank.
Tube Failure
EADI Failure — The EADI will be blank. The
EHSI will work normally.
Action: On the EDZ-817 display controller
(Figure 16A-11), rotate the ADI dimming
knob to the off position. This will bring up the
ADI on the EHSI tube. The EHSI can now be
displayed on the MFD by turning the MC 800
MFD controller knob to HSI
EHSI Failure — The EHSI will be blank. The
EADI on the respective side will be working
normally. The failed EHSI can be displayed on
the MFD by turning the MC-810 controller
knob to HSI (Figure 16A-13).
Revision 1
16A-38
FOR TRAINING PURPOSES ONLY
HAWKER 800 XP
PILOT TRAINING MANUAL
FlightSafety
international
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