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CAS messages. Because of capsule or CAS message space constraints,
message legends of duplicated subjects are similar, but not identical, so
that confusion should not result.
The SWLP will operate continuously if manual (MAN) is selected. If
operated in automatic (AUTO), the panel will operate whenever EICAS
display is lost on DU 3 or 4. The AUTO-MAN switch is located on the
bottom of the SWLP. Preflight checks (using the warning lights dimming
OPERATING MANUAL
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and testing) may be accomplished with the SWLP in AUTO or MAN mode.
The following warning messages are displayed on the SWLP:
L ENGINE HOT R ENGINE HOT REV UNLOCKED
L OIL PRESS R OIL PRESS GND SPOILER
L FUEL PRESS R FUEL PRESS ACFT CONFIG
L FUEL FILTER R FUEL FILTER AFT EQUIP HOT
L PYLON HOT R PYLON HOT CAB PRESS LOW
APU FIRE FIRE DET LOOP CABIN DOORS
SMOKE DETECT FLAME DETECT —
When activated, the SWLP capsules illuminate flashing. The master
warning light (“W” switchlight on glareshield warning/caution inhibition
panel) also illuminates. Depressing the illuminated master warning light
causes the flashing SWLP capsule(s) to revert to steady display. They will
remain illuminated until the fault is corrected. The standby warning lights
panel is removed from SPZ-8400 equipped aircraft. These airplanes have
display unit (DU) reversionary capability, allowing engine instruments and
crew alerting system (EICAS) display on DU 2, 3, 4 or 5.
F. Warning/Caution Inhibition Panel:
The primary flight crew interface with the central warning system is the
warning/caution inhibition panel. Installed on both sides of the flight panel
glareshield, they are shown and described in detail in Figure 11. For the
purposes of this discussion, however, only the function of the WARN
INHIBIT switch will be described.
To prevent the flight crew from being distracted during certain phases of
flight (such as during takeoff and landing), annunciations that would
normally accompany CAS messages in some cases can be inhibited. This
is accomplished through use of the WARN INHIBIT switch that, when
selected, inhibits aural tones and illumination of the master warning/master
caution switches. It should be noted at this point that display of messages
on CAS cannot be inhibited; rather, it is only the aural tones and warning/
caution inhibition panel switch illumination that would normally accompany
the message.
With the airplane on the ground and at least one valid radio altimeter signal
present, depressing either WARN INHIBIT switch enables the inhibit mode
for takeoff. After climbing through 400 feet AGL and retracting the landing
gear, the inhibit mode is automatically cancelled. The flight crew may again
initiate the inhibit mode on final approach after the landing gear is extended
and locked, provided at least one valid radio altimeter signal is present. In
all other flight conditions, the inhibit mode cannot be activated.
The following list summarizes annunciation presentation with the inhibit
mode enabled:
(1) In both SPZ-8000 and SPZ-8400 equipped airplanes, all advisory
(single chime) aural tones are inhibited.
(2) In both SPZ-8000 and SPZ-8400 equipped airplanes, the aural
caution tone (double chime) and master caution switch illumination
are inhibited, except with the amber CPL DATA INVALID caution
message.
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(3) In SPZ-8000 equipped airplanes with the SWLP in automatic
(AUTO), the aural warning tone (triple chime) and master warning
switch illumination are inhibited in conjunction with the following five
(5) messages:
• APU FIRE
• CABIN DFRN-9.8
• CABIN PRESSURE LOW
• DAU 1-2 MISCMP-MSG
• MAIN DOOR
(4) In SPZ-8000 equipped airplanes with the SWLP in manual (MAN)
and SPZ-8400 equipped airplanes, it is not possible to inhibit the
aural warning tone or illumination of the master warning switch.
G. SPZ-8000 Tone Generator:
A tone generator is installed to provide audible sounds, calling the attention
of the flight crew to an associated message or condition. A tone generator
test panel is installed on the copilot’s side console for tone testing. The
aural tones provided and test positions are:
Type of Aural Tone: Condition:
Tone Generator Test
Panel Position:
Horn Landing Gear Unsafe 1
Cricket Airplane Overspeed 2
Beep Altitude Alert 3
1 Chime CAS Advisory 4
2 Chimes CAS Caution 5
3 Chimes CAS Warning 6
　
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