Textron 172R180HP, Pilot Operating Handbook

Page: 281 / 396

CESSNA
MODEL 172R
SECTION 9 - SUPPLEMENTS
SUPPLEMENT 1 - FAA APPROVED
Another push of the mode button will cause the NAV display
to go from the ACTIVE/BEARING format to the
ACTIVE/RADIAL format. In the RADIAL mode, the frequency
inc/dee knobs channel the ACTIVE frequency window and
depressing the frequency transfer button will cause the
ACTIVE frequency to be placed in blind storage and the
STANDBY frequency (in blind storage) to be displayed in the
ACTIVE window display. In radial mode of operation, the right
hand window of NAV display shows the radial FROM the
station. When a too weak or invalid VOA signal is received
the display flags (dashes).
Another push of the mode button will cause the unit to go into
the TIMER mode. When the unit is turned on, the elapsed
timer
(ET)
begins counting upwards from zero. The timer can
be stopped and reset to zero by pushing the NAV frequency
transfer button for 2 seconds or more causing the ET on the
display to flash. In this state, the timer can be set as a
countdown timer or the elapsed timer can be restarted. The
countdown timer is set by using the NAV frequency inc/dee
knobs to set the desired time and then pushing the NAV
frequency transfer button to start the timer. The large knob
selects minutes, the small knob in the "in" position selects 10
�,
second intervals, and the small knob in the "out" position
selects individual seconds. After the countdown timer reaches
zero, the counter will begin to count upwards indefinitely while
flashing for the first 15 seconds. When the elapsed timer is
reset to zero it may be restarted again by momentarily
pushing the NAV frequency transfer button.
\ 8. NAVNOLUME CONTROL (PULL IDENT) -- Adjusts volume of
navigation receiver audio. When the knob is pulled out, the
ldent signal plus voice may be heard. The volume of
voice/ident can be adjusted by turning this knob.
Figure 1. Bendix/King KX 155A VHF NAV/COMM with Kl 208 or Kl
209A Indicator Head (Sheet 5 of 7)
Dec 2/96 S1-9