7-46
P/N 11934-003
Section 7
Cirrus Design
Airplane Description
SR20
Start/Ignition Switch
• Note •
Serials 1337 and subsequent:
The Start/Ignition Switch is
located on the instrument panel.
A rotary-type key switch, located on the left left bolster, controls
ignition and starter operation. The switch is labeled OFF-R-L- BOTH-
START. In the OFF position, the starter is electrically isolated, the
magnetos are grounded and will not operate. Normally, the engine is
operated on both magnetos (switch in BOTH position) except for
magneto checks and emergency operations. The R and L positions
are used for individual magneto checks and for single magneto
operation when required. When the BAT 1 master switch is ON,
rotating the switch to the spring-loaded START position energizes the
starter and activates both magnetos. The switch automatically returns
to the BOTH position when released.
Alternate Air Control
An Alternate Induction Air Control knob, labeled ALT AIR – PULL, is
installed on the left console near the pilot’s right ankle. To operate the
control, depress the center lock button, pull the knob to the open
position, and then release the lock button. Pulling the knob opens the
alternate air induction door on the engine induction air manifold,
bypasses the air filter, and allows warm unfiltered air to enter the
engine. Alternate induction air should be used if blocking of the normal
air source is suspected. Operation using alternate induction air should
be minimized and the cause of filter blocking corrected as soon as
practical.
Engine Indicating
The SR20 is equipped with engine instrumentation and warning lights
to monitor the engine performance.
• Note •
For additional information on instrument limit markings,
refer
to Section 2, Limitations.
Revision A5
Summary of Contents for SR20
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