Cessna 172R, Operating Handbook

Page: 421 / 500

CESSNA
MODEL 172R
SECTION 9 - SUPPLEMENTS
SUPPLEMENT
9 -
FAA APPROVED
r
f
CLOCK OPERATIONS
The lower portion of the LCD
window is
dedicated
to
clock and
timing operations. Pushing the SELECT button will sequence the
window
from
universal time (UT)
to
local time (LT)
to
flight time (FT)
to
elapsed time (ET), and back again
to
universal time. Pushing the
CONTROL
button allows for timing functions within the
four
SELECT menus. Setting
procedures are as follows:
SETTING UNIVERSAL TIME
Use the
SELECT button
to
select universal
time (UT).
Simultaneously press
both the SELECT and the CONTROL
buttons
to enter
the
set
mode. The tens of hours
digit will
start
flashing. The
—
i
CONTROL button has full control
of
the flashing digit, and
each
r'
button push increments the digit. Once
the tens of
hours is set the
SELECT button selects the
next
digit
to be
set.
After the last digit
has
been selected and
set
with the CONTROL button, a
final push
of
the SELECT button exits the
set
mode. The lighted annunciator
|
JP*S
will resume its normal flashing, indicating the clock is running
in
t
universal time mode.
SETTING LOCAL TIME
f!iPN
Use the SELECT
button
to
select local time (LT).
Simultaneously press both the SELECT and the
CONTROL
buttons
to enter
the
set
mode.
The
tens of
hours
digit will start flashing. The
set
operation is the same as for UT,
except
that minutes are
already
synchronized with the UT clock and
cannot
be
set
in local
time.
FLIGHT TIME RESET
Use the SELECT button
to
select flight time (FT). Hold the
CONTROL button down
for
3 seconds, or until
99:59
appears on
the display.
Flight time will be
zeroed upon release
of
the
CONTROL button.
Feb
28/00
S9-5