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cursor up, then ENTER key used
to activate selection.
DIM -- key used to move
cursor down, then ENTER key
used to activate selection.
CLR key used to back out of
sub--modes.
REV 56, Jan 31/03
Vol. 1 12--70--16
FLIGHT INSTRUMENTS
Head--Up Guidance System
Flight Crew Operating Manual MASTER
CSP A--013
Head---up Guidance System --- Test Mode Selections
Figure 12---70---6 Sheet 5
AIRCRAFT IDENTIFICATION
CURRENT ID: 7002
> ENTER NEW ID:
Airplane Identification Page
Used to tag HGS computer
and all fault records with
airplane tail / ident number.
New Airplane
Tail or Ident
Number Field
When ENTER NEW ID
is selected, ELEV readout on
HGS control panel will indicate
ID. Keypad is then used to
input 5--digit number. ENTER
is then used to store number in
memory.
Current Airplane
Tail or Identification
Number
Readout
Scrolling / Clear :
BRT+ key used to move
cursor up,
DIM -- key used to move
cursor down,
CLR key used to back out of
sub--modes.
Vol. 1 12--70--17
REV 56, Jan 31/03
FLIGHT INSTRUMENTS
Head--Up Guidance System
Flight Crew Operating Manual
CSP A--013
MASTER
Head---up Guidance System --- Test Mode Selections
Figure 12---70---6 Sheet 6
HGS SW P/N
CLP
SM
IOS1
IOS2
VG
HCP
Software Part Number Page
Used for software
configuration control, test and
validation purposes.
NOTE
Only the computer unit and the
HGS control panel contain software.
Corresponding
Software Part Number
HGS
Control Panel
Clear:
CLR key used to back out of
sub--modes.
Circuit Cards within
Computer Unit:
CLP -- Control Law
Processor Card,
SM -- System Monitor
Card,
IOS 1/2 -- Input / Output
System Cards,
VG -- Vector Generator
Card.
9801--1300--xxx
9801--1310--xxx
9801--1320--xxx
9801--1330--xxx
9801--1340--xxx
9801--1350--xxx
REV 56, Jan 31/03
Vol. 1 12--70--18
FLIGHT INSTRUMENTS
Head--Up Guidance System
Flight Crew Operating Manual MASTER
CSP A--013
B. Output to PFD’s
HGS provides information via IAPS to enable the copilot to monitor the airplane’s
approach to the runway, check the performance of the HGS, and monitor the pilot’s
response to HGS commands. The PFDs will display the following:
(1) Excessive Lateral Deviation
Excessive localizer deviation is displayed.
(2) Excessive Vertical Deviation
Excessive glideslope deviation is displayed.
(3) Approach Status
The flight mode annunciator area will indicate the following:
S Selectable HGS mode (AIII, AII, or AI) displayed as a white message
S Captured HGS Mode (AIII, AII, or AI) displayed as a green message
S Loss of HGS Mode (AIII, AII, or AI) displayed as a red line through the green
message
S HGS approach warning (APCH WARN) and HGS failure (HGS FAIL) displayed
as red flags. EICAS will echo HGS FAIL as a status message (white)
S FLARE (amber) message (mode IIIa only) in the ADI area.
C. Audio Callouts
Ground proximity warning system mode 6 audio callouts are provided for ground
closure awareness. Callouts are as follows:
S 500, approaching minimums, 100, minimums, and then
S 50 (if DH was not 50 feet), 40, 30, 20, 10.
D. Output to FDR
The HGS transmits the following data to the flight data recorder:
S HGS in use
S HGS fail message
S Approach warning.
E. Output to MDC
The HGS transmits the following data to the maintenance diagnostic computer:
Vol. 1 12--70--19
REV 56, Jan 31/03
FLIGHT INSTRUMENTS
Head--Up Guidance System
Flight Crew Operating Manual
CSP A--013
MASTER
S HGS unit failures; combiner, control panel, overhead unit, drive electronics unit or
computer unit (when they occur)
S Input failures; RA 1 and RA 2, DME 1, VHF 1 and VHF 2, ADC 1 and ADC 2, IRS 1
and IRS 2, IAPS and TCAS (when they occur).
F. Approach Monitor for Category II Operations
The HGS monitors approach parameters during Category II operations (500 feet to 100
feet AGL) as follows:
S Tracking Monitor -- This function evaluates the airplane’s approach relative to
localizer and glideslope deviation.
G. Approach Monitor for Category III Operations
The HGS monitors approach parameters during Category III operations (from 500 feet
AGL). The following are checked:
S The autopilot has been disengaged
S The airplane’s approach relative to airspeed, localizer and glideslope deviation and
　
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