Hartzell HC-B3-2 Series Owner's Manual And Logbook page 51

Term
Corrosion Product
(Steel)
Crack
Debond
Defect
Delamination
Dent
Depression
Distortion
Propeller Owner's Manual
When iron or an iron alloy such as steel
corrodes, a corrosion product known
as rust is formed. Rust is an iron oxide
which is reddish in appearance and
occupies approximately six times the
volume of the original material. Rust is
flakey and crumbly and has no structural
integrity. Rust is permeable to air and
water, therefore the interior metallic iron
(steel) beneath a rust layer continues to
corrode. Corrosion product is not to be
confused with damage left in the base
steel such as pits and etched surface
finish.
Irregularly shaped separation within a
material, sometimes visible as a narrow
opening at the surface
Separation of two materials that were
originally bonded together in a separate
operation
An imperfection that affects safety or
utility
Internal separation of the layers of
composite material
The permanent deflection of the cross
section that is visible on both sides with
no visible change in cross sectional
thickness
Surface area where the material has
been compressed but not removed
Alteration of the original shape or size of
a component
INTRODUCTION
139
Definition
61-00-39
Rev. 17 Apr/20
Page 1-21