Fuel Quantity Indicator - Cirrus SR22 Pilot Operating Handbook

Cirrus Design
SR22

Fuel Quantity Indicator

A dual reading 2¼" fuel quantity indicator 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
41 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'
when no usable fuel remains. Each indicator also provides an output
signal to illuminate the FUEL caution light when the fuel quantity goes
below approximately 14 gallons in each tank. The fuel quantity
indications are derived from float-type fuel-level sensors installed in
each main tank and each collector tank. The indicator is internally
lighted. Serials 0002 through 1601, 1603 through 1643 and 1645
through 1662: 28 VDC for fuel quantity system operation is supplied
through the 5-amp ENGINE INST circuit breaker on Main Bus 1.
Serials 1602, 1644, 1663 and subsequent: 28 VDC for fuel quantity
system operation is supplied through the 5-amp FUEL QTY / HOBBS
circuit breaker on Main Bus 1.
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.
P/N 13772-001
Revision A5
• Note •
Section 7
Airplane Description
7-57