Cessna 172 Maintenance Manual page 16

1. General
A. Chapter 51 describes general repair practices, materials and procedures which are applicable
throughout the subsequent chapters. This chapter also provides general information for performing
any structural repairs.
B. Unless otherwise specified, all dimensions are in inches; forces are in pounds and torques are in
inch-pounds.
C. The airplanes are of an all metal, semimonocoque construction, with the skin carrying a portion of all
structural loads.
D. To obtain information covering dimensions, areas and stations diagrams, refer to current appropriate
Model 172, Model 182 or Model 206 Maintenance Manual, Chapter 6, Dimensions and Areas.
E. For information covering leveling and weighing, refer to current appropriate Model 172, Model 182 or
Model 206 Maintenance Manual, Chapter 8, Leveling and Weighing.
2. Description
A. The fuselage is of conventional semimonocoque construction. Construction consists of formed
bulkheads, longitudinal stringers, reinforcing channels, and skin panels.
B. The wings are of an all metal, strut-braced, semimonocoque construction, utilizing two spars. Each
wing consists of a wing panel with an integral fuel bay, an aileron and a flap.
The empennage group is of a fully cantilevered design and consists of a conventional rudder and
C.
elevator configuration. The horizontal stabilizer is of one-piece construction, consisting of spars, ribs,
and skins. Elevators are constructed of spars, ribs, and skin panels. The skin panels are riveted to
the ribs and spars. A balance weight is located in the outboard end of each elevator, forward of the
hinge line. An elevator trim tab is attached to the right hand elevator and is constructed of a spar,
ribs, and skin, riveted together. The vertical stabilizer is constructed of a forward and aft spar, ribs,
and skin. The rudder is constructed of spars, ribs, and skin panels.
D. The main landing gear consists of 6150M alloy spring-steel, cantilevered with attaching parts of high-
strength 7075-T73 aluminum alloy forgings. Nose gear components are 4130 alloy steel and 7075-
T73 aluminum alloy forgings.
E. The engine mount is constructed of welded 4130 steel tubing on the 172 and 182. The 206 has a
built-up aluminum sheet metal engine mount.
The removable engine cowling is made of 2024 Alclad secured with quarter turn fasteners.
F.
CESSNA AIRCRAFT COMPANY
SINGLE ENGINE
STRUCTURAL REPAIR MANUAL
STANDARD PRACTICES AND STRUCTURES - GENERAL
© Cessna Aircraft Company
51-00-00
Page 1
Jun 1/2005