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SB 740-91-01
packaging and storage conditions are cracking, kinking, bending and other deformations, scratches, creases from storage
while folded. Typical materials are organics, plastics, rubber, cloth, explosive, confined gases, oil, and magnesium.
Typical items are tires, fuel cells, bearings, restraint straps, parachutes, fire extinguishers, pylon and engine mounts, air
ducts, windows, armor, seats, brake lining, avionic equipment, gaskets, generators, grip assemblies, hose assemblies,
survival kits, lights, oxygen masks, oxygen regulators, seals, starters, valves, slings, voltage regulators, batteries and
cable assemblies, railway cars, air conditioners, pontoon boat, etc.
Cyclic Inspection. A periodic systematic examination of stored material to determine serviceability, to detect deterioration
while in storage, and to furnish data for any necessary condition reclassification actions.
Defects and Defectives. A defect is any nonconformance of the unit or product with specified requirements. A defective is
a unit or product which contains one or more defects. The classification of defects and defectives is the listing of possible
defects of the unit or product, or defectives, classified according to their seriousness.
a. Critical. A critical defect is one that judgment and experience indicate could result in hazardous or unsafe
conditions for individuals using or maintaining the product; or for major end items of units of a product, a defect that could
prevent performance of their tactical functions. A critical defective is a unit or product that contains one or more defects.
b. Major. A major defect is a defect, other than critical, that could result in failure, or materially reduce the usability of
the unit of product for its intended purpose, or seriously affect the appearance when appearance is a major characteristic
of the item. A ,major defective is a unit or product that contains one or more major defects.
c. Minor. A minor defect is one that does not materially reduce the usability of the unit of product for its intended
purpose, or is a departure from established standards having no significant bearing on the effective use or operating of the
unit, or affects the appearance in a minor degree when appearance is a significant characteristic. A minor defective is a
unit or product that contains one or more minor defects.
Deterioration. A change in the characteristics of an item which adversely affects its ability to fulfill the function for which it
was intended.
Group. An assemblage of items regarded as a complete unit.
Inspection. Inspection is the act of examining something and comparing it to an authorized standard. A product is
inspected for conformance to established requirements; processes and procedures are inspected for adequacy and
conformance, and technical data are inspected for adequacy. It is also necessary to inspect raw materials and production
and test equipment including machines, dies, gages, jigs, fixtures, and precision measuring equipment. All planning and
,management actions ultimately relate to "Inspection," which is regarded as the single most important function of quality
control.
Inspection Frequency (IFC). The inspection frequency is the period of time between cyclic inspections. (Specific codes
used in the inspection frequency column of appendix A coded requirements are given in Section 2.2g.)
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