__________________________________________________________________
Page 7-44
Cirrus Perspective™ Line Maintenance Manual
Rev. E
190-00920-00
7.4.4
GRS
AHRS
Testing
Verify
attitude
and
heading
on
the
PFD
in
normal
mode.
The
AHRS
attitude
and
heading
information
displayed
should
become
valid
within
1
minute
of
power
‐
up,
as
shown
in
Figure
7
‐
13
provided
both
GPS
receivers
have
a
valid
position.
If
GPS
is
unavailable,
AHRS
initialization
may
take
as
long
as
2
minutes
(the
aircraft
must
remain
stationary).
Figure
7
‐
12.
AHRS
Information
Valid
Test
the
AHRS
reversionary
paths
by
pressing
the
red
reversionary
mode
button
on
the
audio
panel
located
between
the
displays.
Make
sure
both
displays
have
valid
AHRS
information,
as
shown
in
Figure
7
‐
14.
Figure
7
‐
13.
Reversionary
Mode
AHRS
Information
Summary of Contents for Cirrus Perspective SR20
Page 2: ......