Aural Warning System; General; Components - BOMBARDIER Challenger 601-3A CL-600-2B16 Pilot Training Manual

AURAL WARNING
SYSTEM

GENERAL

The aural warning system provides an aural
warning when a hazardous situation occurs,
The system provides the flight crew with a
distinct aural warning for each of the seven
events listed in Table 4-5. The switch legends
listed are found on the test selector switch.

COMPONENTS

The system (Figure 4-6) consists of an aural
warning unit and an aural warning test panel.
Power is supplied to the system from the DC
essential bus and the battery bus. Either sup-
ply is sufficient for system operation.
Aural Warning Unit
The aural warning unit processes inputs from
various sensing devices and generates an in-
dividual warning tone electronically for the
eight events indicated above. The output is fed
via amplifiers to the pilot's and copilot's head-
phones and to the flight deck speaker system.
The volume to the speakers may be adjusted by
a control knob on the aural warning test panel.
The volume to the headphones is preset and
cannot be adjusted by the flight crew.
Aural Warning Test Panel
The aural warning test panel consists of a ro-
tary tone test selector switch, a volume ad-
justment, and a press-to-mute switch. This
allows the flight crew to test the individual tone
generators and also to mute those tones which
can be muted. Operation of the rotary selec-
tor switch applies an input to generate one of
the eight aural warnings. With the selector
switch in the FIRE or FLAP OVSPD posi-
tions, the tone can be muted by pressing the
press-to-mute switch, which then illuminates.
The tones cannot be muted in any of the other
positions. The system is tested by selecting
CL-600-2B16 PILOT TRAINING MANUAL
each event in turn on the rotary selector and
pressing the mute switch to ensure that only
the two sounds indicated above can be muted.
Tone Muting
After the aural warning is heard and the mute
button is pressed, the aural warning stops and
the button illuminates white and reads "TONE
MUTED." When the fire or flap overspeed con-
dition is corrected, the TONE MUTED light
extinguishes. In order to hear what warning is
being muted, the illuminated button can be
pressed. On the landing gear control panel there
is a MUTE HORN button (Figure 4-5). this but-
ton is to mute the horn which sounds to indicate
that the landing gear is unsafe when either throt-
tle is in flight idle or lower. When pressed, the
MUTE HORN button illuminates amber.
FOR TRAINING PURPOSES ONLY
FlightSafety Canada
NOTE
When flaps are extended beyond 30°,
the landing gear unsafe horn cannot
be muted.
NOSE
LEFT
LDG GEAR
+
UP
DN LCK
REL
Figure 4-5. Landing Gear MUTE HORN
Button
Lt é e
Lt d .
RIGHT
DN
MUTE
HORN
TEST
CL 601-3A/R 4-13