Stall Warning Operation; Stall Vane Anti-Ice - BOMBARDIER LEARJET 40 Pilot's Manual

STALL WARNING OPERATION

The stall warning system is powered when the circuit breakers are in.
The shakers, along with other visual and aural stall indications, are in-
hibited until the airplane is airborne. If installed, the AOA indicators
will operate in both the air and ground modes. The stall warning sys-
tem performs a power-up self-test (BIT) and monitors for a number of
possible system faults. Detection of a fault appears on CAS.
The following CAS illumination is specific to the stall warning system:
CAS
STALLWARN FAIL

STALL VANE ANTI-ICE

The stall vanes are equipped with a 28-vdc heater to anti-ice the vane
surfaces during icing conditions. The AOA vane heater of the angle-of-
attack transmitter is monitored for open circuit when the vane heater
power is applied. Detection of an open circuit will result in the appro-
priate CAS message as well as being logged into the stall computer as
a fault for that flight. The vane heaters are controlled by the L and R
PROBE anti-ice switches located on the anti-ice section of the center
switch panel. Each vane heater is supplied power from the left and
right main bus respectively and protected by the AOA 15-amp circuit
breakers on the pilot's and copilot's circuit breaker panel (ANTI-ICE
group).
The following CAS illumination is specific to the stall vane anti-ice
system:
CAS
AOA HT FAIL
PM-132A
Color
Amber The associated (L or R) stall warning system
has failed.
Color
Amber Associated (L or R) angle-of-attack vane
heater has failed.
Pilot's Manual
Description
Description
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