Page 15 2
nd
Edition – Rev 0
03-00
AIRPLANE GENERAL DESCRIPTION
Ventilation, Cabin Heat and Windshield Defrost
If required, using a handle, pilot allows ram-air to enter in the cabin via the two outlet ports
respectively located on the left and right side of the instruments panel.
The cabin heating system utilizes hot air coming from engine heat exchanger: here cold ram-air is
warmed by engine exhaust gases and then it is routed to the heating system hoses.
The cabin heat/defrost control knobs are positioned on the lower side of the LH instrument panel;
when knobs are fully pulled, cabin receives maximum hot air.
There is a switch on the instrument panel that allows to change heating/defrost. If heating mode is
activated, the hot air flows out from a pipe located in the lower part of the cabin, near the pedals.
When defrost is required, the air goes out from two outlet ports located above the instrument panel,
near the windshield.
Figure 15: Heating/defrost system
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