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approved for use in this airplane.
Filling Fuel Tanks
Observe all safety precautions required when handling gasoline. Fuel
fillers are located on the forward slope of the wing. Each wing holds a
maximum of 46.0 U.S. gallons. When using less than the standard
92.0 U.S. gallon capacity, fuel should be distributed equally between
each side.
• WARNING •
Have a fire extinguisher available.
Ground fuel nozzle and fuel truck to airplane exhaust pipe and
ground fuel truck or cart to suitable earth ground.
Do not fill tank within 100 feet (30.5 meters) of any energized
electrical equipment capable of producing a spark.
Permit no smoking or open flame within 100 feet (30.5 meters)
of airplane or refuel vehicle.
Do not operate radios or electrical equipment during refuel
operations. Do not operate any electrical switches.
March 2010
8-22 Information Manual
Section 8 Cirrus Design
Handling, Servicing, and Maintenance SR22
To refuel airplane:
1. Place fire extinguisher near fuel tank being filled.
2. Connect ground wire from refuel nozzle to airplane exhaust, from
airplane exhaust to fuel truck or cart, and from fuel truck or cart to
a suitable earth ground.
3. Place rubber protective cover over wing around fuel filler.
• Note •
Do not permit fuel nozzle to come in contact with bottom of
fuel tanks. Keep fuel tanks at least half full at all times to
minimize condensation and moisture accumulation in tanks. In
extremely humid areas, the fuel supply should be checked
frequently and drained of condensation to prevent possible
distribution problems.
4. Remove fuel filler cap and fuel airplane to desired level.
• Note •
If fuel is going to be added to only one tank, the tank being
serviced should be filled to the same level as the opposite
tank. This will aid in keeping fuel loads balanced.
5. Remove nozzle, install filler cap, and remove protective cover.
6. Repeat refuel procedure for opposite wing.
7. Remove ground wires.
8. Remove fire extinguisher.
Fuel Contamination and Sampling
Typically, fuel contamination results from foreign material such as
water, dirt, rust, and fungal or bacterial growth. Additionally, chemicals
and additives that are incompatible with fuel or fuel system
components are also a source of fuel contamination. To assure that
the proper grade of fuel is used and that contamination is not present,
the fuel must be sampled prior to each flight.
Each fuel system drain must be sampled by draining a cupful of fuel
into a clear sample cup. Fuel drains are provided for the fuel
gascolator, wing tanks, and collector tank drains. The gascolator drain
exits the lower engine cowl just forward of the firewall near the airplane
centerline. Fuel tank and collector tank drains are located at the low
spot in the respective tank.
March 2010
Cirrus Design Section 8
SR22 Handling, Servicing, and Maintenance
Information Manual 8-23
If sampling reveals contamination, the gascolator and tank drains must
be sampled again repeatedly until all contamination is removed. It is
helpful to gently rock the wings and lower the tail slightly to move
contaminates to the drain points for sampling. If after repeated
samplings (three or more), evidence of significant contamination
remains, do not fly the airplane until a mechanic is consulted, the fuel
system is drained and purged, and the source of contamination is
determined and corrected.
Airplane Serials 3026 and subsequent before SB 2X-28-08 R1; The
gascolator incorporates a filter bypass that activates a red, pop-up tab
when pressure drop across the gascolator reaches 0.8 ± 0.2 PSI. The
filter is bypassed when the pressure drop reaches 1.20 ± 0.2 PSI.
Once the pop-up tab is activated, the fuel filter element must be
replaced and the pop-up tab manually reset. Do not attempt to clean
the filter element.
If sampling reveals the airplane has been serviced with an improper
fuel grade, do not fly the airplane until the fuel system is drained and
refueled with an approved fuel grade.
To help reduce the occurrence of contaminated fuel coming from the
supplier or fixed based operator, pilots should assure that the fuel
supply has been checked for contamination and that the fuel is
properly filtered. Also, between flights, the fuel tanks should be kept as
full as operational conditions permit to reduce condensation on the
inside of fuel tanks.
Draining Fuel System
The bulk of the fuel may be drained from the wing fuel tanks by the use
of a siphon hose placed in the cell or tank through the filler neck. The
　
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