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MIL-W-50550A (MU)
certifying organization.  The Initial certificate submitted shall
be substantiated by evidence of the agent's authority to bind his
Substantiation of the agent's authority will not be
principal.
required with subsequent certificates unless, during the course of
the contract, this authority Is vested in another agent of the
certifying organization.
4.2 First Article Inspection
4.2.1 Submission. -The contractor shall submit a sample
consisting of 29 finished assemblies to the Government for testing
in accordance with the provisions of 4.2.2.  All parts and
materials shall be the same as will be used in production and shall
be obtained from the same source of supply.  Prior to submission
the sample shall be inspected by the contractor to the degree
necessary to assure that it conforms to the requirements of the
contract.  A first article sample or portion thereof, as directed
by the contracting officer, shall also be submitted whenever there
is a lapse in production for a period in excess of 90 days or
whenever a change occurs in manufacturing as to significantly
affect product uniformity as determined by the Government.
4.2.2 Inspections to be Performed .-Assemblies and components
will be subjected by the Government to any or all of the examinations
or tests specified in section 4.3.2, 4.3.3 and 4.3.4 of this
specification and any or all of the applicable drawings.  Five
(5) warheads shall be used for the Leak Test. In addition 24
warheads shall be utilized for the Centrifuge (4.3.4.1) and Leak
(4.3.4.2) test.
4.2.3 Rejection. -If any assembly or component fails to comply
with any of the applicable requirements, the first article
sample shall be rejected.  The Government reserves the right to
terminate its inspection upon any failure of any assembly or
components In the sample to comply with any of the stated require-
ments.
4.3 Inspection Provisions for Production
4.3.1 Lot Formation.-The term "Inspection lot" as used In
this specification is defined as an essentially homogeneous
collection of units of product from which a representative sample
is drawn and inspected to determine conformance with applicable
requirements.
The sample selected shall represent only that
quantity of units from which the sample was drawn and shall not
be construed to represent any prior or subsequent quantities
presented for inspection.  Homogeneity shall be considered to exist
provided the inspection lot has been produced by one manufacturer
in one unchanged process, in accordance with the same drawing,
same drawing revision, same specification and same specification
revision and complies with the provisions for submission of product
4

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