Pipistrel Virus SW 121, Pilot Operating Handbook

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Virus SW 121
Pilot Operating Handbook
POH-121-00-40-001
PAGE REV. 0
SECTION 7
AIRPLANE DESCRIPTION
APPROVED
tor removes water that may be in the fuel and filters out any debris/foreign
material larger than 60 microns. Two fuel flow sensors are used to measure
flow in feed and return lines and calculate fuel flow whch is displayed on
the MFD.
NOTE: Indicated fuel flow on MFD is for information only and should not be
used for navigation and flight planning purposes. Refer to visual fuel quantity
indicators for actual fuel quantity on board and tracking of fuel situation.
Because of aircraft’s high wing configuration the fuel system is complete-
ly gravity-fed, always ensuring adequate fuel pressure. Fuel system vent-
ing is essential to system operation. Blockage of the system will result in
decreasing of fuel flow and eventual engine fuel starvation and stoppage.
If takeoff weight limitations for the next flight permit, the fuel tanks should be
filled after each flight to prevent condensation.
Fuel Selector Valve
A fuel selector valve, located in the middle of the centerconsole, provides
the following functions:
LEFT Allows fuel to flow/return from/to the left tank
RIGHT Allows fuel to flow/return from/to the right tank
OFF Cuts off fuel flow and return from/to both tanks
The valve is arranged so that to feed off a particular tank the valve should
be pointed to the fuel indicator for that tank. To select RIGHT or LEFT, rotate
the selector to the desired position. To select Off, first raise the fuel selector
knob release and then rotate the knob to OFF.
Draining
Three drains are present. The primary sampling location is the gascolator in
the engine compartment, accessible from the bottom engine cowl. In addi-
tion, a drain betwen each fuel collector tank and the fuel selector is provid-
ed. These two drains are used for draining water from the fuel system and
are accesible from the outside, located on the bottom-side of the fuselage
behind the baggage compartment area. Industry standard fuel sampling
cups or sticks should be used to perform draining.