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OVERHEAD
PANEL
ACT
STBY
ELV
G/S
FAULT CLR BRT + DIM --
1 2 3
4 5 6
7 8 9
ENTER 0 TEST
HGS
HGS
Combiner Brightness Control
Used to adjust brightness
of holographic image.
Push in for automatic
control.
Pull out and rotate
clockwise for manual
control.
Vol. 1 12--70--7
REV 56, Jan 31/03
FLIGHT INSTRUMENTS
Head--Up Guidance System
Flight Crew Operating Manual
CSP A--013
MASTER
Head---up Guidance System Sunvisor
Figure 12---70---2
1. Ultrasuede material
2. Sunvisor holder
3. Velcro strip
4. Decal
5. Velcro strip
6. Sunvisor
LEGEND
2
5
4
6
GLARESHIELD
FCC
CONTROL
PANEL
3
TURB
HGS SUNVISOR
1
Sunvisor Stowed
REV 56, Jan 31/03
Vol. 1 12--70--8
FLIGHT INSTRUMENTS
Head--Up Guidance System
Flight Crew Operating Manual MASTER
CSP A--013
Head---up Guidance System
Figure 12---70---3 Sheet 1
ACT
STBY
ELV
G/S
FAULT CLR BRT + DIM --
1 2 3
4 5 6
7 8 9
ENTER 0 TEST
HGS
HGS Control Panel (1)
Center Pedestal
FAULT lamp
(amber)
Comes on to indicate
communications fault
between computer unit
and control panel.
ELV and G/S
mode select keys
(momentary action)
Used in conjunction
with numeric keypad
and + /-- keys to input
runway elevation and
glideslope angle data
into HGS.
CRT line cursor
comes on to
indicate entry area.
LED Display
Indicates mode
selected for display on
HGS combiner unit
TEST key
(momentary action)
Used by maintenance
staff to initiate system
test.
When pressed,
active mode display
line indicates TEST
Test mode has
priority over all modes.
To start test mode:
Press TEST &
ENTER.
To halt test mode:
Press TEST again.
Numeric Keypad
Used to input
numeric data
(runway elevation and
glideslope angle
into HGS.
o Key annunciator
lamp that comes on
when the applicable
mode / function has
been selected.
ENTER key
(momentary action)
Used to enter keypad
data into HGS.
ACT and STBY
mode select keys
(momentary action)
Used to select
applicable HGS mode.
BRT+ and DIM -- keys
(momentary action):
BRT/DIM: Used to
adjust brightness of
CRT.
+ / -- : Used with 0 to 9
number keys to input
numerical data into
HGS.
CLR key
(momentary action)
When pressed:
clears active mode
displayed HGS
combiner.
Vol. 1 12--70--9
REV 56, Jan 31/03
FLIGHT INSTRUMENTS
Head--Up Guidance System
Flight Crew Operating Manual
CSP A--013
MASTER
Head---up Guidance System
Figure 12---70---3 Sheet 2
Selectable HGS Mode
Active HGS Mode
PRI Primary
AIII Approach Category III
AII Approach Category II
AI Approach Category I
F/D Flight Director
VMC Visual Meteorological
Conditions
NO AIII Loss of Approach Category III
NO AII Loss of Approach Category II
NO AI Loss of Approach Category I
CLR Combiner Clear Mode Selected.
TEST HGS Test Mode Selected
ACT
STBY
ELV
G/S
FAULT CLR BRT + DIM --
Selectable Capability
Elevation
Glideslope
PRI Primary
AIII Approach Category III
AII Approach Category II
AI Approach Category I
F/D Flight Director
VMC Visual Meteorological
Conditions
Elevation
Readout
Indicates
runway
elevation as
entered on
numeric
keypad.
default is
last entry.
Glideslope
Readout
Indicates
glideslope
angle as
entered on
numeric
keypad.
default is
--3.00
Approach Capability
AIII Approach Category III
AII Approach Category II
AI Approach Category I
Active Mode
FAULT lamp
CRT Brightness Control
and +/--Keys
Active Mode
Select Key
Standby Mode
Select Key
Runway Elevation
Select Key
Glideslope Angle
Select Key
Key annunciator
lamp that comes on
when the applicable
mode / function has
been selected.
Clear Key
Used to obtain a clear view
through the HGS combiner.
Clears display without having
to stow the combiner.
To disengage clear mode,
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