![Cessna 152 1978 Pilot Operating Handbook Download Page 157](http://html.mh-extra.com/html/cessna/152-1978/152-1978_pilot-operating-handbook_2584444157.webp)
CESSNA AIRCRAFT COMPANY
FOR TRAINING USE ONLY
MODEL 152
9-17
NOTE
The third decimal-place digit is not shown on the receiver-transmitter
frequency readout. As shown in Figure 1, selected Com frequency is
118.000 MHz. With the switch in the other position, 118.02 is 118.025
MHz or 118.07 is 118.075 MHz.
8.
NAVIGATION RECEIVER MEGA HERTZ SELECTOR – Selects navigation receiver frequency in 1-Mhz
steps between 108 and 117 MHz; simultaneously selects paired glide slope frequency or DME
channel.
9.
NAVIGATION RECEIVER VOLUME CONTROL – Controls volume of audio from navigation receiver
only. Clockwise rotation increases audio level.
10.
NAVIGATION RECEIVER FRACTIONAL MEGA HERTZ SELECTOR – Selects navigation receiver frequency
in .05-MHz steps between .00 and .95 MHz; simultaneously paired glide slope frequency or DME
channel.
11.
COMBINED IDENTIFIER SIGNAL SELECTOR AND VOR SELF-TEST SELECTOR SWITCH (ID-T SWITCH) –
With VOR or LOC station selected, in ID position, station identifier is audible; in center (unmarked)
position, identifier is off; in T (momentary on) position, tests VOR navigation circuits.
12.
COURSE DEVIATION POINTER – Indicates deviation from selected omni bearing or localizer
centerline.
13.
OFF/TO-FROM INDICATOR – Operates only with VOR or localizer signal. “OFF” position (flag)
indicates unreliable signal. When “OFF” position disappears, indicator shows whether selected VOR
course is “TO” or “FROM” the station (if LOC frequency is selected, indicator will only show “TO”).
14.
RECIPROCAL COURSE INDEX – Indicates reciprocal of selected VOR course.
15.
OMNI BEARING SELECTOR (OBS) – Selects desired course to or from a VOR station.
16.
BC – During LOC operation, when optional Back-Course operation is selected, amber lamp
illuminates to alert the pilot that CDI indication is reversed.
17.
BEARING DIAL – Rotated by OBS to select course at index.
18.
COURSE INDEX – indicates selected VOR course.
19.
GLIDE SLOPE “OFF” FLAG – When visible, indicates unreliable glide slope signal or no glide slope
signal. The flag disappears when a reliable glide slope signal is being received.
20.
GLIDE SLOPE DEVIATION POINTER – Indicates deviation from normal glide slope.
SECTION 2 – LIMITATIONS
There is no change to the airplane limitations when this avionics 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 (or 1800 ±100 RPM with a three bladed propeller)
during ILS approaches to avoid oscillations of the glide slope deviation pointer caused by propeller
interference.
SECTION 3 – EMERGENCY PROCEDURES
There is no change to the airplane emergency procedures when this avionics equipment is installed.
Summary of Contents for 152 1978
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