MIL-DTL-5904E
4.2.2 First article tests. The first article tests shall consist of all tests described under
4.4.
4.3 Acceptance testing. Acceptance testing shall consist of the following:
a. Individual tests.
b. Sampling plan and tests.
4.3.1 Individual tests. Each light shall be subjected to the following tests as described
under 4.4:
a. Examination of product.
b. Operation.
c. Optical performance.
d. Socket.
4.3.2 Sampling plan and tests.
4.3.2.1 Lot. A lot shall consist of lights manufactured under essentially the same
conditions and submitted for inspection at substantially the same time.
4.3.2.2 Sampling plan. One light shall be selected at random from each lot of one
hundred or fraction thereof produced in a lot and subjected to the photometric tests (see 4.4.4).
4.3.2.2.1 Rejection and retest. When one or more lights from a lot fail to meet the
specification, acceptance of all lights in the lot shall be withheld until the extent and cause of
failure is determined. After corrections have been made, all necessary tests shall be repeated.
4.3.2.2.2 Individual tests may continue. For production reasons, individual tests may be
continued pending the investigation of a sampling test failure. Final acceptance of the entire lot
shall not be made until it is determined that the lot meets all the requirements of the
specification.
4.3.3 Defects in lights already accepted. The investigation of a test failure could indicate
that defects may exist in lights already accepted. If so, the contractor shall fully advise the
procuring activity of all defects likely to be found and methods of correcting them.
4.4 Test methods.
4.4.1 Examination of product. The light shall be inspected to determine compliance with
the requirements specified herein with respect to material and workmanship.
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