TM 55-1680-320-23 & P
Section 2. DEFINITIONS (Cont)
A completely smooth surface depression caused by pres-
sure or impact from a smooth ball-like foreign object.
The parent material is displaced, but usually none is
Twisting or bending out of a normal, natural or original
shape, usually caused from being exposed to excessive
pressure or temperature either when restrained or un-
Wearing away of metal.
Metal band or socket.
Any object such as a tool, piece of equipmen, APU part
(nut, bolt, lockwire) that could in any way damage the
Wearing or rubbing of areas, generally used in reference
to damage on wire-braid covering (of teflon hose) or on
A wide rough scratch or group of scratches, usually,
with one or more sharply impressed corners, and fre-
quently accompanied by deformation or removal of parent
Short, tight twists or curls caused by a doubling or
winding of a hose or line upon itself. Likely to cause
difficulties in the operation.