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PILOT'S OPERATING HANDBOOK
SUPPLEMENT
CESSNA 400 NAV/COM
(RT-485A) WITH CESSNA
400 RNAV (RN-478A)
SECTION 3
EMERGENCY PROCEDURES
There
is
no change to the airplane emergency procedures when this
avionic equipment is installed. However, if the frequency readouts fail, the
frequency controls should not be moved due to the difficulty of obtaining
a
known frequency under this condition. The radio will remain operational
on the last
frequency
selected, and the preset frequencies in MEMORY may
be selected by pressing the
appropriate
MEMORY pushbutton.
SECTION 4
NORMAL PROCEDURES
PRESETTING NAV/COM FREQUENCIES IN MEMORY:
1.
COM OFF/VOL CONTROL -- TURN ON;
adjust
to desired audio
level.
2.
MEMORY 1 Pushbutton -- PRESS desired NA V or COM pushbut-
ton 1 momentarily to alert the memory bank of a forthcoming
frequency to be stored.
3.
FREQUENCY SELECTORS -- MANUALLY ROTATE correspond-
ing NAV or COM frequency selectors (press
C
pushbutton
as
required to select the desired third fractional COM digit) until the
desired
frequency
is shown in the
operating
frequency
readout
window. The frequency displayed
will
be automatically trans-
ferred into MEMORY
1.
4.
NOTE
Do not press the C pushbutton more than about 2 seconds
while selecting fractional frequencies or you will activate
the MEMORY test function
.
MEMORY 2 and 3 Pushbutton -- REPEAT STEPS 2 and 3 using next
desired NAV or COM MEMORY to be stored. Up to 3 NAV and 3
COM frequencies may be stored for automatic recall frequency
selection.
NOTE
The operating frequency set in the selected MEMORY
position will automatically be changed in the memory
bank anytime the operating frequency is manually
changed.
7
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