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CESSNA
SECTION 7
MODEL 182T
AIRPLANE & SYSTEMS DESCRIPTION
DIRECTIONAL INDICATOR
The directional indicator is a vacuum/air-driven gyro that displays
airplane heading on a compass card in relation to a fixed simulated
airplane image and index. The indicator will precess slightly over a
period of time. Therefore, the compass card should be set with the
magnetic compass just prior to takeoff, and occasionally readjusted
as required throughout the flight. A knob on the lower left edge of
the instrument is used to adjust the compass card to correct for
precession. A knob on the lower right edge of the instrument is used
to move the heading bug.
VACUUM GAUGE
The vacuum gauge is part of the vacuum gauge/ammeter,
located on the lower left corner of the instrument panel. It is
calibrated in inches of mercury and indicates vacuum available for
operation of the Attitude and Directional Indicators. The desired
vacuum range is 4.5 to 5.5 inches of mercury. Normally, a vacuum
reading out of this range may indicate a system malfunction or
improper adjustment, and in this case, the Attitude and Directional
gyros should not be considered reliable. However, due to lower
atmospheric pressures at higher altitudes, the vacuum gauge may
indicate as low as 4.5 in. Hg. at 15,000 feet and still be adequate
for normal system operation.
LOW VACUUM ANNUNCIATION
Each engine-driven vacuum pump is plumbed to a common
manifold, located forward of the firewall. From the tee, a single line
runs into the cabin to operate the various vacuum system
instruments. This tee contains check valves to prevent back flow
into a pump if it fails. Transducers are located just upstream of the
tee and measure vacuum output of each pump.
Apr 30/01
7-47
Содержание 182T 2001
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Страница 40: ...SECTION 1 CESSNA GENERAL MODEL 182T Figure 1 7 Temperature Conversions 0585T1034 1 24 Apr 30 01...
Страница 42: ...SECTION 1 CESSNA GENERAL MODEL 182T Figure 1 9 Quick Conversions 0585T1031 1 26 Apr 30 01...
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Страница 166: ...SECTION 6 CESSNA WEIGHT BALANCE EQUIPMENT LIST MODEL 182T Figure 6 8 Center of Gravity Limits 0785C1010 6 16 Feb 23 01...
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Страница 202: ...SECTION 7 CESSNA AIRPLANE SYSTEMS DESCRIPTION MODEL 182T Figure 7 6 Fuel System Schematic 7 28 Apr 30 01...
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Страница 246: ...SECTION 8 CESSNA HANDLING SERVICE MAINTENANCE MODEL 182T Figure 8 1 Fuel Mixing Ratio 0585C1001 8 18 Apr 30 01...
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