Cessna TURBO CENTURION T210M 1978 Pilot Operating Handbook page 237

PILOT'S OPERATING HANDBOOK
SUPPLEMENT
CESSNA 300 NAV/COM
(RT-385A) WITH CESSNA
400 RNAV (RN-478A)·
converter processes the received navigation signal to provide omni
bearing or localizer information for display by the course indicator.
CAUTION
If the RN AV set is removed from the airplane or becomes
inoperative, the associated VHF navigation indicator will
be inoperative.
The course indicator includes a Course Deviation Indicator (CDI), an
Omni Bearing Selector (OBS) and OFF/TO-FROM Indicator Flags. It also
includes an RNA V lamp (RN) which lights when area navigation opera-
tion is selected, and a back-course lamp (BC) which lights when back-
course operation is selected. The IN-442AR is offered as the standard
Course Deviation Indicator.
All operating controls and indicators for the Cessna 300 Na v / Com are
included on the front panel of the RT-385A Receiver-Transmitter and the
associated Course Deviation Indicator. These controls and indicators are
shown and described in Figure
1.
Operating controls for the RN-478A Area
Navigation Computer, which are used for area navigation, and operating
•✓·-.
controls for the associated Type R-476A DME are shown in the appropriate
supplements in this manual.
SECTION 2
LIMITATIONS
There is no change to the airplane limitations when this avionic
equipment is installed. However, the pilot should be aware that on many
Cessna airplanes equipped with the windshield mounted glide slope
antenna, pilots should avoid use of 2700 ±100 RPM on airplanes equipped
with a two-bladed propeller or 1800 ±100 RPM on airplanes equipped with a
-.. three-bladed propeller during ILS approaches to avoid oscillations of the
glide slope deviation pointer caused by propeller interference.
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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
radio will remain operational on the last frequency selected. The fre-
quency controls should not be moved due to the difficulty of obtaining a
known frequency under this condition.
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