CESSNA AIRCRAFT COMPANY
FOR TRAINING USE ONLY
MODEL 152
9-21
5.
NAVIGATION RECEIVER FRACTIONAL MEGAHERTZ SELECTOR – Selects Nav frequency in .05-MHz
steps between .00 and .95 MHz; simultaneously selects paired glide slope frequency and DME
channel.
6.
NAV VOL CONTROL – Adjusts volume of navigation receiver audio.
7.
NAVIGATION RECEIVER MEGAHERTZ SELECTOR – Selects NAV frequency in 1-MHz steps between
108 and 117 MHz; simultaneously selects paired glide slope frequency and DME channel.
8.
COMMUNICATION RECEIVER-TRANSMITTER FRACTIONAL MEGAHERTZ SELECTOR – Depending on
position of 5-0 switch, selects COM frequency in .05-MHz steps between .000 and .975 MHz. The 5-
0 switch identifies the last digit as either 5 or 0.
9.
SQUELCH CONTROL – Used to adjust signal threshold necessary to activate COM receiver audio.
Clockwise rotation increases background noise (decreases squelch action); counterclockwise
rotation decreases background noise.
10.
COMMUNICATION RECEIVER-TRANSMITTER MEGAHERTZ SELECTOR – Selects COM frequency in 1-
MHz steps between 118 and 135 MHz.
11.
COM OFF-VOL CONTROL – Combination on/off switch and volume control; turns on NAV/COM set
and controls volume of communications receiver audio.
12.
BC LAMP – Amber light illuminates when the autopilot or reverse sense option is installed and the
reverse sense switch or autopilot’s back-course function is engaged; indicates course deviation
pointer is reversed on selected receiver when tuned to a localizer frequency.
13.
COURSE INDEX – Indicates selected VOR course.
14.
COURSE DEVIATION POINTER – Indicates course deviation from selected omni course or localizer
centerline.
15.
GLIDE SLOPE “GS” FLAG – When visible, red GS flag indicates unreliable glide slope signal or
improperly operating equipment. Flag disappears when a reliable glide slope signal is being
received.
16.
GLIDE SLOPE DEVIATION POINTER – Indicates deviation from ILS glide slope.
17.
NAV/TO-FROM INDICATOR – Operates only with a VOR or localizer signal. Red NAV position (Flag)
indicates unusable signal. With usable VOR signal, indicates whether selected course is TO or FROM
station. With usable localizer signal, shows TO.
18.
RECIPROCAL COURSE INDEX – Indicates reciprocal of selected VOR course.
19.
OMNI BEARING SELECTOR (OBS) – Rotates course card to select desired course.
20.
AUTOMATIC RADIAL CENTERING (ARC-PUSH-TO/PULL-FR) SELECTOR – In center detent, functions as
conventional OBS. Pushed to inner (Momentary On) position, turns OBS course card to center
course deviation pointer with a TO flag, then returns to conventional OBS selection. Pulled to outer
detent, continuously drives OBS course card to indicate bearing from VOR station, keeping course
deviation pointer centered, with a FROM flag. ARC function will not operate on localizer
frequencies.
21.
AUTOMATIC RADIAL CENTERING (ARC) LAMP – Amber light illuminates when Automatic Radial
Centering is in use.
22.
COURSE CARD – Indicates selected VOR course under course index.
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
Summary of Contents for 152 1978
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