Fuel Indicating - Cirrus SR22 Pilot Operating Handbook

Section 7
Systems Description

Fuel Indicating

Fuel quantity is measured by float-type quantity sensors installed in
each fuel tank and displayed on the Engine Strip along the left edge of
the MFD and in the Fuel Qty block on the MFD's Engine page.
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.
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
A dual reading fuel quantity gage is displayed on the Engine Strip
along the left edge of the MFD and in the Fuel Qty block of the
ENGINE page. In the case of an electronic display failure (backup
mode), all essential fuel information is displayed on the Engine Strip
along the left edge of the PFD. The LEFT pointer indicates left tank
fuel quantity and sweeps a vertical bar 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 band from
0 to 14 U.S. gallons and a green band from 14 to 46 U.S. gallons. The
indicators are calibrated to read 0 gallons when no usable fuel
remains.
Fuel quantity is measured by a float type quantity sensors installed in
the fuel tanks. Fluid quantity information is sent to the Engine Airframe
Unit, processed, and transmitted to the analog electronic Fuel
Quantity Gage and CAS window for display.
Fuel Flow
Fuel Flow is shown in the upper mid left corner of the Engine Strip as
both an analog electronic gage and as a digital value. The gage
pointer sweeps a scale range from 0 to 30 Gallons Per Hour (GPH).
The fuel flow value is displayed in white numerals below the gage.
Fuel flow is measured by a transducer on the right side of the engine
in the fuel line between the engine driven fuel pump and distribution
7-46
• Caution •
• Note •
Cirrus Design
SR22
P/N 13772-004
Revision 1