Pilot’s Operating Handbook Section 7
EXTRA 500 Description of Airplane and Systems
If pressurization mode shall be finished during flight, follow the
procedure above, setting the airport altitude equal to the
momentary flight altitude. Do not switch the
PRESS switch to
OFF before cabin altitude reaches the selected airport altitude.
7.22 Cabin Air Recirculation System
(incl. Air-conditioning)
For the cabin air a recirculation system exists to provide air
movement for improved cabin ventilation.
The recirculation flow is achieved by several electrical blowers:
One panel ventilation fan is installed on each panel side (pilot
and copilot) for cockpit ventilation. They may be activated
individually by switches located besides their air outlets in the
instrument panel.
The main recirculation flow is provided by the two (cabin-)
evaporator blowers. They both blow air into the forward part of
the cabin. They may be operated without activation of the vapor
cycle air-condition system for ventilation purposes and may be
activated in two selectable stages (
LOW, HI) by means of the
VENT switch.
7.22.a Air Condition System
The aircraft is standard equipped with an electrically driven
vapor cycle air conditioning system as part of the cabin air
recirculation system. The electrically driven compressor
condenser module is installed in the unpressurized part of the
tail cone aft of the rear pressure dome. Cooling air for the
condenser (circulated by the condenser fan) is taken from an
inlet in the left fuselage side aft of the cabin door and dumped
overboard through an outlet on the same side.
The electric air-condition provides the ability to operate the
system on ground using ground power without the necessity to
run the aircraft engine.
Note It is not possible to operate the air condition on battery
power as the high current draw would shortly lead to a
depleted battery. Therefore for operation either the
26. January 2011 7-63
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