MIL-DTL-22576A
TABLE II. Classification of defects.
Categories
Defects
Critical:
None defined.
Major:
101
Circular diffusing terminal incomplete; component parts missing.
102
Not in accordance with approved drawing.
103
Evidence of unauthorized material used.
104
Material thickness. (Vanes, mounting ring, bellmouth, and throat
not within specified tolerance.)
105
Number and location of vanes nonconforming.
106
Vane configuration and size nonconforming.
107
Drilling, mounting holes, bolt circles, and fasteners
nonconforming; rivets loose.
108
Diffusing terminal diameter and overall height not as specified.
109
Not free of cracks, splits, and deformation.
110
Surfaces not smooth; evidence of sharp edges or burrs.
111
Vane assembly not inclined at the specified angle.
112
Bottom plate not formed to the specified contour (radius
nonconforming).
113
Throat diameter nonconforming.
114
Evidence of rattle.
115
Ring spacing not as specified.
116
Throat piece flange nonconforming; warpage exceeds specified
tolerance.
117
Brazed and welded joints are not clean.
Minor:
201
Marking, label plate missing, data on label plate missing, not
legible, or not permanent.
202
Area of holes in bellmouth not as specified.
4.5 Tests.
4.5.1 Shock test. Diffusing terminals shall be shock tested on the light weight machine as prescribed for
Grade A shock of MIL-S-901.
4.5.2 Shake test. Diffusing terminal shall be shaken by hand; any audible noise shall be accepted as an
indication of loose parts.
4
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