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Print Date: Sat Mar 28 11:55:42 CST 2015 MODEL 172 MAINTENANCE
MANUAL (Rev 20
6-20-00 (Rev 15)
2015 Cessna Aircraft CompanyRetain printed data for historical
reference only. For future maintenance, use only current data. Page
1
AIRPLANE ZONING- DESCRIPTION AND OPERATION
1. General
A. The Model 172 is divided into numbered zones to provide a
method for locating components and/orplacards throughout the
airplane. The zones are identified by a three-digit number as shown
inthe example below. The first digit in the sequence denotes the
major zone (300 series for aft of
cabin, 500 series for left wing, etc.). The second digit in the
sequence further divides the zone intosubmajor zone (Zone 510 for
inboard portion of the left wing and Zone 520 for outboard
portionof the left wing, etc..). The third digit further divides
the submajor zones into subdivisions (if nosubdivision is needed,
this digit is typically assigned as 0 (zero).
ZONE EXAMPLE
B. Major Zones.(1) 100 - Forward side of firewall and
forward.
(2) 200 - Aft side of firewall.
(3) 300 - Aft of cabin to end of airplane.
(4) 500 - Left wing.
(5) 600 - Right wing.
(6) 700 - Landing gear.
2. Description
A. For a breakdown of the airplane zones, refer to Figure 1.
