Cessna SkyHawk SP 172S NAV III 2005 Pilot Operating Handbook page 267

CESSNA
MODEL 172S NAV III
SECTION 7
AIRPLANE AND SYSTEMS DESCRIPTION
VACUUM SYSTEM
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VACUUM
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VACUUM
REGULATOR
VACUUM
SYSTEM
AIR FILTER
GDU 1040
CONTROU
DISPLAY UNIT
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GEA 71
ENGINE AND AIRFRAME UNIT
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CODE
INLET
AIR
VACUUM
DISCHARGE
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AIR
Figure 7-9. Vacuum System
172SPHAUS-OO
U.S. 7-61