Operation Manual Part 2

Aerosoft – Digital Aviation
CRJ-70 & CRJ-900
AOM PART 2
Systems Description
VOL
5
5-1-9
26-Jul-2017
AURAL WARNINGS / AUDIO SIGNALS
The following table shows the available aural warnings / audio signals.
Sound
Indication
Warbler
Stall
Windshear
Windshear
Whoop – Whoop
GPWS (excessive descent or closure rate)
Fire bell
Fire warnings
Clacker
Excessive stabilizer trim Movement
VMO/MMO exceedance
Airspeed too high for current flap setting
Cavalry Charge
Autopilot disconnect
Horn
Gear warning (not down)
Triple chime
Warning tone (indicates an aircraft system voice advisory)
C-chord
Altitude alert
Single chime
Caution tone (indicates an aircraft system voice advisory)
Faulty aural warnings may result from a defective DCU. There are
two guarded pushbuttons on the co-pilots side panel – called the
audio warning panel – to switch off the affected DCU. Open the
guard and press the pushbutton to deactivate the DCU. Switching
a DCU off triggers respective EICAS messages and the pushbutton
will illuminate white.
MASTER WARNING LIGHT
There is a master warning light on either side – the pilot’s and the co-pilot’s side. In case a warning is triggered,
both lights come on and stay flashing if the warning exists or the warning light is pushed by the pilot or co-
pilot. The aural warning and flashing light stay off until the next warning is triggered.
In the following cases the aural warning may
not be muted:
• Stall warbler
• Stabilizer trim clacker
• GPWS/TCAS (voices and aural)
• AP Disconnect cavalry charge
• Overspeed clacker
• Configuration warnings
• Flap clacker
• Gear Horn