Page 1-7
Pilot’s Operating Manual
Revision A1: Nov, 2002
Hawker 800XP Pro Line 21
Section III - SYSTEMS DESCRIPTION
Sub-section 1
MASTER WARNING SYSTEM
TESTING
Pushing the ANNUN test button on the overhead roof panel results in the following:
• All of the overhead and MWS panel annunciators, including white, illuminate at maximum intensity.
• The amber repeater annunciators will flash and the red repeater annunciators illuminate steady.
• The MWS master warning lamps flash alternatively at an even rate.
DIM CONTROL FAILURE
If a warning occurs and the associated annunciator fails to illuminate due to an open-circuit failure of
the dimming circuit, the amber MWS DIM FAIL annunciator will illuminate on the MWS panel.
The flight crew should set the NORM/DIM OVRD switch to the DIM OVRD position. This causes the
warning annunciator to illuminate at maximum intensity and the MWS DIM FAIL annunciator will
extinguish.
When the warning is acknowledged, the annunciator will remain at the maximum level of intensity.
MWS MASTER WARNING LAMP FAILURE
The MWS red master warning lamp control channel contains dual circuitry which provides a back-up,
and a means of indicating a single failure. A failure is indicated by alternate flashing at an uneven rate
(one faster than the other) of the two lamps.
POWER SUPPLIES
The MWS is powered from PE busbar via three circuit breakers located on panel DA-D:
• MWS PWR 1 and 2
• MWS TEST
The MWS dimming circuit is powered from a secondary busbar - MWS DIM bus.
NORM
ANNUN
DIM OVRD
DIM
DIM
MWS
FAIL
MWS
MWS
MWS
FAILED SIDE
SLOW RATE
WORKING SIDE
NORMAL RATE
OF FLASH
OF FLASH
Содержание Hawker 800XP
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