MIL-DTL-3100H
4.2 Classification of inspections. The inspection requirements specified herein are
classified as follows:
a. First article inspection (see 4.4).
b. Conformance inspections (see 4.5).
4.3 Inspection conditions. Unless otherwise specified (see 6.2), all inspections shall be
conducted under the following conditions:
a. Air temperature: 73 +18°F.
b. Barometric pressure: 28.5 (+2, - 3) in. mercury (Hg).
c. Relative humidity: 50 +30%.
4.4 First article inspection. Unless otherwise specified (see 6.2), the Government shall
select 12 wheel assemblies produced under the production contract for first article inspection
(see 6.6). Four wheel assemblies shall undergo the 48-hour drum test, four shall undergo the
6-hour drum test, and four shall undergo the adhesion test. No one sample shall undergo more
than one of these three tests. First article samples shall be inspected as specified in table III.
Approval of the first article sample by the Government shall not relieve the contractor of his
obligation to supply wheel assemblies that are fully representative of those inspected as a first
article sample. Any changes or deviation of the production units from the first article sample shall
be subject to the approval of the contracting officer.
TABLE III. Classification of inspections.
Conformance
First
Examin-
Title
Requirement Inspection
article
ation
Tests
Materials and construction
3.2 thru 3.3.1 4.6.1
X
Defects (see table IV) 1/
3.3, 3.6, 3.7
4.6.2
X
X
and 3.8
Hardness 1/
3.4.1
4.6.3
X
Accelerated aging 1/
3.4.2
4.6.3
X
Low temperature flexibility 1/
3.4.3
4.6.3.1
X
Endurance (48-hour drum)
3.5.1
4.6.4.1
X
X
Endurance (6-hour drum)
3.5.1
4.6.4.2
X
X
Adhesion
3.5.2
4.6.5
X
X
Ozone resistance 1/
3.5.3
4.6.6
X
1/ Test specimens shall be taken from units selected for adhesion test.
4.5 Conformance inspection. Conformance inspection shall include the examination of
4.5.2 and the tests of 4.5.3.
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