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PILOT'S OPERATING HANDBOOK
SUPPLEMENT
CESSNA 400 NAV/COM
(RT-485A) WITH CESSNA
400 RNAV (RN-478A)
7.
b.
To Obtain Bearing TO VOR Station -- PUSH knob to inner
(Momentary On) position.
NOTE
ARC lamp will illuminate amber while the course card is
moving to center the course deviation pointer. After
alignment has been achieved to reflect bearing TO VOR,
automatic radial centering will automatically shut down,
causing the ARC lamp to go out and the ARC knob to return
to center detent position and function as a normal OBS.
C.
To obtain Continuous Bearing FROM VOR Station -- PULL
(ARC/PULL-FR) knob to outer detent.
NOTE
ARC lamp will illuminate amber, OBS course card will
turn to center the course deviation pointer with a FROM
flag to indicate bearing from VOR
station.
This system
will continually drive to present the VOR radial
the
aircraft is on until manually returned
to
the center detent
by the pilot.
AP/CPLD Annunciator -- CHECK ON (if 400B or 400B IFCS
autopilot is engaged), amber light illuminated.
NOTE
The AP/ CPLD annunciator light is only operational with a
400B or 400B IFCS autopilot installation.
VOR SELF-TEST OPERATION:
.,-....._
1.
COM OFF/VOL Control -- TURN ON.
2.
NA V Frequency Selector Switches
--
SELECT usable VOR station
signal.
3.
OBS Knob -- SET for 0° course at course index; course deviation
pointer centers or deflects left or right, depending on bearing of
signal; NAV /TO-FROM indicator shows TO or FROM.
4.
ID/VOX/T Switch -- PRESS to T and HOLD at T; course deviation
,,--,
pointer centers, NAV/TO-FROM indicator shows FROM and
AP/CPLD and XMIT
annunciators
light.
5.
OBS Knob
--
TURN to displace course approximately 10° to either
side of 0° (while holding ID/VOX/T to T). Course deviation pointer
deflects full scale in direction corresponding to course displace-
ment.
NAV/TO-FROM indicator shows FROM.
9
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