Textron Cessna 172S Skyhawk SP, Information Manual

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SECTION 9 - SUPPLEMENTS
SUPPLEMENT 25 - FAA APPROVED
CESSNA
MODEL 172S
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1. OPERATING COMM FREQUENCY DISPLAY -- Displays
COMM ACTIVE and COMM STANDBY frequencies with a
"T" between them to indicate TRANSMIT and an "R" to
indicate RECEIVE modes of operation.
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2. OPERATING NAV FREQUENCY DISPLAY '- The right
portion of the display is allocated to NAV receiver' ACTIVE
and STANDBY information. The frequency channeling 'is
similar .to the COMM when operating in the frequency
mode.• The NAV ACTIVE' and STANDBY frequencies are
stored in the'memory on power down and return on power
up.
3. NAV STANDBY/OBS/Bearing/RadiallTimer Display- --. The
right side of the NAil display is .controlled by the MODE
SELECTOR BUTTON (see #7 below). With an active VOR
frequency, this portion of the. display shows the STANDBY
frequency, OBS selling for the internal COl, the bearing to
theVOR
station, radial from the _VOR station, or a count-
up/count-down timer. With an active localizer frequency,
this .portion of the display shows the standby frequency, the
lellers "LOC", or count-up/count-down timer.
4. NAV FREQUENCY SELECTOR KNOB (SMALL)
Operates in 50-kHz steps. The NAV receiver's lower and
upper frequency limits are 108.00 MHz and 117.95 MHz.
Exceeding the upper limit of frequency band will
automatically return to the lower limit and vice versa. A
clockwise rotation will increase (inc) the previous frequency
while a counterclockwise rotation will decrease (dec) the
previous frequency.
5. NAV FREQUENCY SELECTOR KNOB. (LARGE)
Operates in 1-MHz steps. The frequency inc/dec operates
the STANDBY frequency display. A clockwise rotation will
increase the previous frequency while a counterclockwise
rotation will decrease the previous frequency. Exceeding the
upper limit of the frequency band will automatically return to
the lower limit and vice versa.
S25-6
Jan 31/02