CESSNA
SECTION 7
MODEL 172S NAV III
AIRPLANE AND SYSTEMS DESCRIPTION
FLIGHT INSTRUMENTS
(Continued)
AIRSPEED INDICATOR
The G1000 vertical tape airspeed indicator is shown along the
upper left side of the PFD. The airspeed indication data is provided
by the GDC 74A Air Data Computer unit. Colored arcs are provided
to indicate the maximum speed, high cruise speed caution range,
normal operating range, full wing flap operating range and low
airspeed awareness band. Calculated true airspeed is displayed in
a window at the bottom edge of the airspeed tape.
The standby (pneumatic) airspeed indicator is found on the lower
center instrument panel.
ALTIMETER
The primary altitude indicator (altimeter) is found along the right
side of the attitude indicator on the GDU 1040 Primary Flight
Display. The altitude indication data is provided by the GDC 74A Air
Data Computer unit. The local barometric pressure is set using the
BARO knob on the GDU 1040 displays. The GDU 1040 BARO
setting has no effect on the KAP 140 Autopilot BARO setting.
A cyan selectable altitude reference pointer ("bug") is displayed on
the altimeter tape and is set using the ALT SEL knob on the GDU
1040 displays. The altitude bug set-point is shown in a window at
the top edge of the altimeter. The ALT SEL knob has no effect on
the KAP 140 Autopilot altitude preselect or altitude hold functions.
NOTE
The KAP 140 Autopilot Altitude Preselect, Altitude
Hold and BARO settings are completely independent
of the G1000 ALT SEL and BARO settings.
The standby (aneroid) sensitive altimeter is found on the center
instrument panel.
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172SPHAUS-00
U.S. 7-17