SWITCH FUNCTION
All functions of the known icing equipment are controlled by switches located
on the lower portion of the instrument panel and are grouped together in one
row labeled ICE PROTECTION.
The switches are as follows:
Engine Inlet Switches
(Override and Primary)
OVERRIDE switch with a position for BYPASS (up) and the stowed position
(down). The switch has a detent to prevent accidental movement of it. To
move the switch to the BYPASS position, pull out on the switch before
moving the switch up to BYPASS. The override switch controls the override
actuator and is only used to move the inertial particle separator (IPS) to
BYPASS in the event of a primary actuator system failure.
To the right of the OVERRIDE switch is the primary actuator switch. It
controls the position of the primary actuator for the IPS and has positions
for NORMAL and BYPASS. The position of the IPS is indicated to the pilot
through the following annunciations:
ENG INLET NRM and ENG INLET
BP.
The following annunciation is shown if an ice protection mode is selected on
the SURFACE/PROP switch, but the IPS is not in the BYPASS position, or
if an IPS actuator is commanded to the BYPASS position, but fails to do so:
INLET NOT BP.
The pilot action is to select the BYPASS position on the inertial particle
separator. If the IPS does not engage into BYPASS the pilot action is to exit
icing conditions as soon as possible.
Pitot Heat Switches
(L and R with Positions for ON and OFF)
Also standard equipment on the KODIAK, this controls the pitot heat to the
left and right pitot/static probes. If the pitot heat switches are turned off and
the outside air temperature is less than 5 degrees Celsius, the following
annunciation is shown: PITOT OFF L-R
If a failure is detected in the power to the pitot/static heat, the following
annunciation is shown:
PITOT FL
The left Pitot Heat switch also controls the stall warning heat. So, any time
the left Pitot Heat switch is on, the stall warning heat is also activated.
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