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ALPHA Trainer LSA
Pilot Operating Handbook
POH-162-00-40-001
PAGE REV. 0
SECTION 7
AIRPLANE DESCRIPTION
steel heat mu fastened to the exhaust system muer that serves as the
system’s source of hot air. Air from the oil cooler enters the engine bay and
is directed into the heat mu. Hot air leaving the heat mu is then directed
through scat tubing to a mixer where it meets fresh air coming from a NACA
inlet positioned on the upper engine cowling. The mixer regulates the fresh/
hot air ratio passing through the cabin air selector, which is fastened to the
aircraft’s firewall. The system is controlled from the cabin by a cabin heat
panel and a stainless steel shut o valve. This ON/OFF valve is controlled
by a push-pull knob on the bottom of the switch panel, next to the battery
disconnect ring. Pull to open, twist to lock, push to shut.
The cabin heat panel is positioned on the instrument panel and allows the
pilot to control, via rotary knobs and toggles switches, the temperature
(fresh/hot air ratio), the flow (fan on/o) and where (cabin or windshield) the
air entering the cabin should go.
The following are the oered control possibilities:
The bottom knob on the cabin heat system panel controls the direction of
airflow, either towards the windshield (rotate left) or towards pilot’s feet (ro-
tate right). Any setting inbetween these two results in air flowing in both
directions.
The upper knob on the cabin heat system panel controls the temperature of
the airflow. Rotate left for cooler and rotate right for warmer. Maximum cold
position will result in external ambient being delivered to the cabin. In this
case the system serves as an additional source of fresh air. Maximum hot
position will only let the hot air from the exhaust mu into the cabin.
To activate windshield defrost turn the temperature knob on the cabin heat
panel to HOT (upper knob, full right), select windshied as direction of airflow
(bottom knob full left) and engage the fan (ON).
7.11 PITOT SYSTEM
The pitot-static system consists of a single pitot tube mounted on the star-
board wing, approximately 3 meters from fuselage. The pitot tube drives the
total and static pressure to the instruments.
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