Cessna 172S Pilot Operating Handbook page 221

C ESSNA
MODEL 1 72S
There is no change to the airplane limitations when the digital
clock/OAT/volt indicator is installed.
E M E R G E N CY PROC E D URES
There is no change to the airplane emergency procedures when
the clock/OAT/volt indicator is installed .
OATNOLTMETER OPERATION
The upper LCD window is dedicated to OAT and voltmeter
operations. The voltmeter reading is preselected upon startup and
is indicated by an "E" fol lowing the display reading.
OAT NOL T button will sequence the window from voltage to
Fahrenheit ("F") to Celsius ("C"), and back again to voltage.
CLOCK OPERATIONS
The lower LCD window is dedicated to clock and timing
operations. Pushing the MODE button toggles between clock and
timer. Each time the button is pushed the mode changes. Time of
day is displayed in hours and minutes in the 24-hour format.
Setting procedures are as follows:
While in the Clock Mode, press the S ET (RES ET) button and the
left two digits wil l flash ; these are the month digits. Press the ADV
(ST/SP) button to change to the current month . Then press the S ET
(RESET) button and the right two digits wil l flash ; these are the day
of the month digits. Press the ADV (ST/SP) button to change to the
current day. Then press the SET (RESET) button and both the
month and day will be displayed.
Jan 3 1 /02
S UPPLEMENT 24 - FAA APPROVED
SECTION 2
LIMITATIONS
SECTION 3
S ECTION 4
NORMAL PROC EDU R ES
S ECTION 9 - S UP PLEM ENTS
Pushing the
S24-5