ZZ-T-391E
4.1.7
Physical
Examination.
The sample unit. (of a sample) shall be one completely
tire (see 4.1.5).
Physical examination of each sample shall be in l ccordance
with
Table II, inspected
for:
Hardness
(see
3.6.4)
Outside
Diameter
(see
3.5.1)
Section Width
(see
3.5.1)
Rim
Contours
(see
T&RA)
Adhesion
(ace
3.6.3)
Indoor
Endurance
(see
3.6.7)
A tire failing to pass one or more of the above characteristics
shall be considered l
defective
tire.
The Accepted Quality Level (AQL) shall be 4.0
percent defective.
The
inspection level shall be S-1.
4.1.5 Visual
Examination.
The sample unit (of a sample) shall be one completely
fabricated tire (see 4.1.5).
Visual examnation shall be in accordance with Table II
l nd 111.
The AQL for major defects shall be 4.0 percent defective and for minor
The inspection level shall be S-4.
defects, 6.5 percent defective.
Table
III
Major
Tire
Type,
style, tread,
compound
101
code,
or size not as specified
Tire
Special design l nd construction
102
not l s specified, when l pplicable.
Tire
Nonconformance
to
T&RA
Yearbook.
103
Tire
finish
Gouges,
porosity,
splits,
cracks,
104
or blisters.
Wheels
or
bands
Nonconformance to T&RA
Yearbook
or
105
not as specified.
Wheel
or
band
finish
106
Sharp or burred l dges, slivers,
splits, cracks, or l etal defects.
Wheel
or
band
finish
Not
finished
as
specified.
107
Workmanship
108
Warped, fractured,
deformed,
or
otherwise damaged.
109
Marking
Omission or lack of legibility
of
manufacturer's identification.
Minor
Tire
finish
201
Lumps, pits, mold residue
or
other-
wise not true l nd smooth.
Workmanship
Crease, oil, dirt,
202
other
foreign
matter embedded in
surface, or
other evidence of
imperfection.
Harking
203
Manufacturer's
name
or
trademark,
type, style, compound code, size,
and date of manufacture not legibly
molded or branded in the location
as specified; not of size, symbols,
or letters specificd,
9
.
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