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SECTION
9
-
SUPPLEMENTS
SUPPLEMENT
9
-
FAA
APPROVED
CESSNA
MODEL
172R
UPPER
BUTTON
Figure
1.
Clock/OAT Gauge
SECTION 4
NORMAL PROCEDURES
TEST
MODE
The
unit may
be tested
by holding
the
SELECT
button
down
for
three seconds. Proper
operation
is
indicated by the
display
88:88
and activation
of
all
four
annunciators.
O.A.T.
/
VOLTMETER
OPERATION
The
upper portion of
the
LCD
window is dedicated
to
O.A.T.
and voltmeter operations.
The
voltmeter reading is preselected
upon
startup
and is indicated by
an
“E”
following
the
display
/
reading.
Pushing
the
upper control button will sequence the
window
from
voltage
to
fahrenheit
(“F”)
to
centigrade
(“C”), and
back again
to
voltage.
S9-4
Feb
28/97
Summary of Contents for 172R
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