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message is displayed in the Message Bar. When the pilot
acknowledges this message, the MFD will automatically switch to the
Terrain Awareness Display Page.
The message bar will be removed from the display when the TAWS is
no longer in alert status, or if the pilot acknowledges the message from
the Terrain Awareness Display Page.
Revision 01: 12-15-07
P/N 11934-S30 11 of 12
Cirrus Design Section 9
SR20 Supplements
Geometric Altitude versus Measured Sea Level
An indication of MSL-G or Geometric Altitude may appear on the left
side of the MFD indicating the height above Measured Sea Level
(MSL) calculated from the GPS.
This data serves as the reference for color-coding for the Terrain
Awareness Display Page and as an input to the TAWS Look-Ahead
algorithm. Because it is derived from GPS, Geometric Altitude may
differ from corrected barometric altitude. Therefore, Geometric Altitude
may be in error by as much as 100 ft and should not be used for
navigation. MSL-G is presented solely to provide the pilot additional
situational awareness regarding the true MSL height upon which the
TAWS Terrain Display and Alerting is based.
Revision 01: 12-15-07
12 of 12 P/N 11934-S30
Section 9 Cirrus Design
Supplements SR20
Self Test
Proper operation of the TAWS can be verified when the aircraft is on
the ground as follows:
1. Select the TAWS page on the MFD
2. Clear all caution messages in the lower right corner
3. Ensure that the TERR INHIBIT switch is not engaged, and
momentarily push the SELF TEST switch:
a. The amber TERR INOP light should be illuminated.
b. The amber TERR INOP light should extinguish.
c. The red TERR WARN light should be illuminated.
d. An aural “EGPWS SYSTEM OK” is enunciated over cockpit
speaker.
e. The red TERR WARN light should extinguish.
f. The amber TERR CAUT light should be illuminated.
g. The amber TERR CAUT light should extinguish.
h. A terrain self-test pattern should appear on the MFD.
i. The terrain self-test should disappear after several sweeps of
the terrain display.
j. A TAWS Sensor Self Test Caution message should appear in
the lower right comer of the MFD.
4. Acknowledge and clear this caution.
Revision 01: 12-15-07
P/N 11934-S31 1 of 4
Cirrus Design Section 9
SR20 Supplements
Pilot’s Operating Handbook and
FAA Approved Airplane Flight Manual
Supplement
for
Avidyne EMax™ Engine
Instrumentation
When the Avidyne EMax™ Engine Instrumentation system is installed
in the Cirrus Design SR20, this POH Supplement is applicable and
must be inserted in the Supplements Section (Section 9) of the Cirrus
Design SR20 Pilot’s Operating Handbook. This document must be
carried in the airplane at all times. Information in this supplement adds
to, supersedes, or deletes information in the basic SR20 Pilot’s
Operating Handbook.
• Note •
This POH Supplement Revision dated Revision 01: 12-15-07
supersedes and replaces the original release of this supplement dated
Original: 10-12-05.
Revision 01: 12-15-07
2 of 4 P/N 11934-S31
Section 9 Cirrus Design
Supplements SR20
Figure - 1
Section 1 - General
EMax™ Engine Instrumentation provides the pilot with engine
parameters depicted on simulated gauges and electrical system
parameters located in a dedicated region within in the EX5000C MFD
display.
Avidyne EMax™ Engine Instrumentation
Revision 01: 12-15-07
P/N 11934-S31 3 of 4
Cirrus Design Section 9
SR20 Supplements
Section 2 - Limitations
No Change.
Section 3 - Emergency Procedures
No Change.
Section 4 - Normal Procedures
No Change.
Section 5 - Performance
No Change.
Section 6 - Weight & Balance
Installation of the Avidyne Engine Instruments adds the following
optional (Sym = O) equipment at the weight and arm shown in the
following table.
Section 7 - System Description
An Engine Sensor Unit interfaces (SIU) with engine-mounted sensors,
some of which are shared with the standard airplane gauges, and
provide data to the MFD for display.
Airplanes equipped with EMax™ Engine Instrumentation display all
engine settings and parameters on a dedicated MFD engine monitor
page. The MFD also displays engine and fuel data in data blocks on
the full-screen moving map display. In the event of an exceedence,
each out-of-limit parameter is highlighted on the screen for immediate
attention. The engine monitor also includes data capture capability,
ATA /
　
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