Cessna 172 Skyhawk SERIES, Maintenance Manual

Page: 18 / 167

CESSNA AIRCRAFT COMPANY
SINGLE ENGINE
STRUCTURAL REPAIR MANUAL
damage. This is particularly true with wing tip, horizontal stabilizer tip, or vertical fi n tip damage. If
the damage is due to an aft load, the rear spars should be checked for indications of compression
damage for the full length, including the fuselage components.
3. Damage Classi fi cation
A. Damage to the airplane can be divided into three major categories: negligible damage, repairable
damage, and major replacement damage. These categories are intended to provide the mechanic
with some general guidelines to use in determining the extent and criticalness of any damage.
Obviously, there will be some overlapping between categories, and common sense should be used
in determining the
fi nal action to be taken with regard to any damage.
(1) For damage criteria of speci fi c structure (wings, fuselage, and so forth), refer to applicable
chapters within this repair manual.
4. Re fi nishing Damaged Areas Following Repairs
A. Areas of structure which are damaged and then repaired in the fi eld, must be re fi nished to restore the
original paint and corrosion protectant properties to factory standards. Refer to applicable airplane
Maintenance Manual, Chapter 20, Exterior Finish - Cleaning/Painting, for re
fi nishing procedures and
required materials.
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© Cessna Aircraft Company
Jun 1/2005