MIL-DTL-26521L
4.4.4 Failures. All samples shall meet all of the contract requirements. Failure of a sample unit to
pass any test shall be cause for rejection of the entire lot and refusal to grant first article approval.
4.4.5 First article information. Upon completion of first article inspection, the Government activity
responsible for conducting the inspection program (see 6.2), shall report the results of the inspection, with
appropriate recommendation, to the contracting officer. Approval of the first article samples or the
waiving of first article inspection does not preclude the requirements for performing conformance
inspection.
4.4.5.1 Disposition of samples. First article samples shall be furnished to the Government as
directed by the contracting officer (see 6.2). The samples shall be representative of the construction,
workmanship, components, and materials to be used during production. When a manufacturer is in
continuous production of the hose assemblies from one contract to another, submission of additional first
article samples for a new contract may be waived at the discretion of the acquiring activity (see 6.2).
4.4.5.2 Acceptance of first article for hose sizes smaller than tested. Manufacturers who have
successfully completed first article testing and whose production hoses have performed satisfactorily in
the field should be waived for sizes smaller than originally tested.
4.4.6 First article information. Upon completion of first article inspection, the Government activity
responsible for conducting the inspection program (see 6.2), shall report the results of the inspection, with
appropriate recommendation, to the contracting officer. Approval of the first article samples or the
waiving of first article inspection does not preclude the requirements for performing individual inspections.
4.5 Conformance inspection.
4.5.1 Individual tests. Inspection of the product for delivery shall consist of subjecting each hose
assembly to the individual tests specified in table V.
TABLE V. Individual inspection. 1/
Requirement
Inspection
Number of
Test
paragraph
paragraph
samples
Workmanship
100%
Cleanliness
100%
Configuration
100%
Cleanliness
100%
Proof pressure
100%
Hose assembly durability 2/ 3/
See 4.5.2
Burst resistance 1/
See 4.5.2
1/ Applies only to hose assembly inspections.
2/ Hose and hose assemblies subjected to destructive tests shall not be delivered on the
contract or purchase order, see 4.5.2.
3/ The 4 inch (102 mm) ID hose assemblies will not be subjected to this test.
4.5.2 Sampling for tensile and burst test. The manufacturer shall test one hose for durability and one
for burst resistance for each lot of 0 to 99 pieces. For lots over 100 pieces, one additional hose shall be
tested for durability and one additional hose shall be tested for burst resistance for each full or partial
increment of 100 pieces. The durability and burst tests shall be done prior to delivery and tested hoses
shall not be shipped or considered part of the order.
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