Minor component defects (small scratches, minor dents, etc.) are acceptable in
some cases, providing the defect does not affect the performance of the
component. It is up to the user to determine whether a defect is acceptable,
whether minor repair can return the component to use, or whether the
component should be discarded and replaced.
Abrasion is defined as wear of individual wire resulting in flattened areas on the wire.
Abrasive wear can be caused by interference with other components, dragging the cable
over abrasive surfaces or as a result of other cable damage. Cable which has abrasive
damage must be replaced and, if applicable, the cause of the abrasion must be investigated
To confine and restrict the liberty of a free moving part, material, or component. May cause
serious damage if a chafing force is being imposed.
Bird caging is defined as short lengths of wire rope with outer wire strands stretched and
opened to be formed in the appearance of a bird cage. A bird cage is a permanent
deformation and the cable must be replaced.
A broken wire will occur as a result of cable damage or as a cable is nearing the end of its
A small, thin section of metal extending beyond a regular surface, usually located at the
corner or edge of a bore or hole. Burr will be removed to prevent injury to personnel and
damage to adjacent components, and resulting scratch or score will be repaired.
Loss of metal from a surface by chemical or electrochemical action. Corrosion products are
usually easily removed by mechanical means. Refer to TM 1-1500-344-23 series, Cleaning
and Corrosion Control manual for corrosion identification, removal, and surface refinish.
A physical separation of two adjacent portions of metal, evidenced by a fine or thin line that
crosses surface. Caused by excessive stress, it may extend inward from surface a few
thousandths of an inch, or run completely through section thickness. Cracks pose a serious
threat to component operation and may cause injury to operator. Cracks must be repaired
immediately. Extensively cracked surfaces shall result in component replacement.
Indentation in metal surface produced by an object striking with force. The surface
surrounding the indentation will usually be slightly upset. Dents may be removed providing
the repair does not structurally weaken component. Minor dents may be left in surface if
they do not rub against or contact adjacent parts.
Flattened areas of cable result from the application of an excessive force to a small area of
the cable. Such damage can be caused by trapping the cable in a door or driving a vehicle
with a metallic wheel over the cable. A cable with a flattened area must be replaced.
A kink is identified as a permanent bend in a cable caused when a loop of cable is suddenly
pulled tight. A kink may result in interference and early failure of the cable by abrasion
and/or wire breakage. Any damage to the cable, to include kinks, will result in cable