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of preheat to all parts of the engine. Hot air must be applied
directly to the oil sump and external oil lines as well as the
March 2010
4-26 Information Manual
Section 4 Cirrus Design
Normal Procedures SR20
cylinders, air intake and oil cooler. Because excessively hot air
can damage non-metallic components such as composite
parts, seals, hoses, and drives belts, do not attempt to hasten
the preheat process.
1. Ignition Switch ..........................................................................OFF
• WARNING •
Use extreme caution when pulling the propeller through by
hand. Make sure ignition switch is OFF, keys are out of
ignition, and then act as if the engine will start. A loose or
broken ground wire on either magneto could cause the engine
to fire.
2. Propeller........................................... Hand TURN several rotations
3. External Power (If applicable) .......................................CONNECT
4. Brakes ..................................................................................HOLD
5. Bat Master Switches ........................................ ON (check voltage)
6. Mixture ......................................................................... FULL RICH
7. Power lever..........................................................FULL FORWARD
8. Fuel Pump.....................................................PRIME, then BOOST
• Note •
In temperatures down to 20°F, hold Fuel (Boost) Pump switch
to PRIME for 10 seconds prior to staring.
9. Propeller Area .....................................................................CLEAR
10. Power Lever ............................................................OPEN ¼ INCH
11. Ignition Switch ....................... START (Release after engine starts)
• Caution •
Limit cranking to intervals of 20 seconds with a 20 second
cooling period between cranks. This will improve battery and
contactor life
12. Power Lever ...............................RETARD (to maintain 1000 RPM)
13. Oil Pressure ....................................................................... CHECK
14. Alt Master Switches .................................................................. ON
(Continued on following page)
March 2010
Information Manual 4-27
Cirrus Design Section 4
SR20 Normal Procedures
15. Avionics Power Switch ...............................................................ON
16. Engine Parameters ........................................................MONITOR
17. External Power (If applicable) ................................. DISCONNECT
18. Amp Meter/Indication......................................................... CHECK
19. Strobe Lights..............................................................................ON
Hot Weather Operation
Avoid prolonged engine operation on the ground.
• Note •
Fuel BOOST should be left ON during takeoff and for climb as
required for vapor suppression with hot or warm fuel.
March 2010
4-28 Information Manual
Section 4 Cirrus Design
Normal Procedures SR20
Noise Characteristics/Abatement
The certificated noise levels for the Cirrus Design SR20 established in
accordance with FAR 36 Appendix G are:
No determination has been made by the Federal Aviation
Administration that the noise levels of this airplane are or should be
acceptable or unacceptable for operation at, into, or out of, any airport.
The above noise levels were established at 3000 pounds takeoff
weight and 2700 RPM.
Recently, increased emphasis on improving environmental quality
requires all pilots to minimize the effect of airplane noise on the
general public. The following suggested procedures minimize
environmental noise when operating the SR20.
• Note •
Do not follow these noise abatement procedures where they
conflict with Air Traffic Control clearances or instructions,
weather considerations, or wherever they would reduce safety.
1. When operating VFR over noise-sensitive areas, such as outdoor
events, parks, and recreational areas, fly not less than 2000 feet
above the surface even though flight at a lower level may be
allowed.
2. For departure from or approach to an airport, avoid prolonged
flight at low altitude near noise-sensitive areas.
Configuration Actual Maximum Allowable
Two-blade Propeller 84.79 dB(A) 87.6 dB(A)
Three-blade Propeller 83.42 dB(A) 87.6 dB(A)
March 2010
Information Manual 4-29
Cirrus Design Section 4
SR20 Normal Procedures
Fuel Conservation
Minimum fuel use at cruise will be achieved using the best economy
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