7-42 P/N 13772-002
Section 7 Cirrus Design
Systems Description SR22
Fuel Indicating
Fuel quantity is measured by float-type quantity sensors installed in
each fuel tank and displayed on the Fuel Quantity Gage.
• Caution •
When the fuel tanks are 1/4 full or less, prolonged
uncoordinated flight such as slips or skids can uncover the
fuel tank outlets. Therefore, if operating with one fuel tank dry
or if operating on LEFT or RIGHT tank when 1/4 full or less, do
not allow the airplane to remain in uncoordinated flight for
periods in excess of 30 seconds.
• Note •
A “Red X” through any electronic display field indicates that
the display field is not receiving valid data and should be
considered inoperative.
Fuel Quantity Gage
Serials 3026 thru 3848:
A dual reading 2¼” fuel quantity gage is installed on the console
immediately forward of the fuel selector valve. The LEFT pointer
indicates left tank fuel quantity and sweeps a scale marked from 0 to
46 U.S. gallons in 5-gallon increments. The RIGHT pointer sweeps an
identical scale for the right tank. Each scale is marked with a yellow
arc from 0 to 14 U.S. gallons. The indicators are calibrated to read 0
gallons when no usable fuel remains and are internally lighted. The
fuel quantity gage also provides LOW FUEL level output signals to the
Engine Airframe Unit for display in the CAS window based on the float
sensor positions in the fuel tanks.
28 VDC for fuel quantity system operation is supplied through the 3-
amp FUEL QTY circuit breaker on MAIN BUS 1.
Reissue A
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