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TAWS
SELF
TEST
TERR
INHIBIT
TERR
INOP
TERR
CAUT
TERR
WARN
SR22_FM09_2032
Figure - 2
TAWS Annunciator Panel
Revision 1: 12-15-07
10 of 12 P/N 13772-121
Section 9 Cirrus Design
Supplements SR22
MFD Terrain Awareness Display
• WARNING •
Do not use the Terrain Awareness Display for navigation of the
aircraft. The TAWS is intended to serve as a situational
awareness tool only and may not provide the accuracy fidelity
on which to solely base terrain or obstacle avoidance
maneuvering decisions.
To select the Terrain Awareness Display Page on the MFD, rotate the
page knob to TAWS.
Terrain and obstacle alerts are the most critical situations displayed by
TAWS. There are two levels of alerts:
• Caution Alert - Possible terrain or obstacle conflict within 40-
60 seconds. When triggered, the terrain or obstacle that
caused the alert is displayed in bright yellow. In addition, a
message describing the nature of the alert is presented in the
MFD message bar.
• Warning Alert - Possible terrain or obstacle conflict within 30
seconds. When triggered, the terrain or obstacle that caused
the alert is displayed in bright red. In addition, a message
describing the nature of the alert is presented in the message
bar
When a caution or warning alert is active, the display image
surrounding the target is enlarged somewhat to allow the terrain or
obstacle to be better seen on the display.
If a terrain or obstacle alert occurs while a page other than Terrain
Awareness Display Page is being displayed, a terrain or obstacle alert
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 1: 12-15-07
P/N 13772-121 11 of 12
Cirrus Design Section 9
SR22 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 1: 12-15-07
12 of 12 P/N 13772-121
Section 9 Cirrus Design
Supplements SR22
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 1: 12-15-07
P/N 13772-124 1 of 4
Cirrus Design Section 9
SR22 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 SR22, this POH Supplement is applicable and
must be inserted in the Supplements Section (Section 9) of the Cirrus
Design SR22 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 SR22 Pilot’s
Operating Handbook.
• Note •
　
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