MIL-DTL-27272C
4.1.1 Disposition of test specimens. Test specimens that have been subjected to qualification or
periodic tests shall not be delivered on a contract or purchase order.
4.2 Qualification inspection. Qualification inspection shall be performed on units produced with
equipment and procedures used in production.
4.2.1 Samples for qualification. Samples, consisting of 16 hose assemblies of the lengths specified in
table II assembled from 32 fittings of each size as specified herein and polytetrafluoroethylene hose
conforming to MIL-DTL-27267, shall be subjected to qualification testing as specified in table IV and in the
sequence shown. Straight-type flared fittings conforming to MS27053 shall be used for each hose
assembly, except as noted in table IV. The 16 hose assemblies shall be assembled using hose from a
minimum of two manufacturers.
4.2.1.1 Fittings. In addition, four fittings of each size, two flared and two flareless, to be subjected to
the over-tightening torque test (4.6.13) specified in table IV.
4.2.2 Failures. One or more failures shall be cause for refusal to grant qualification approval.
4.2.3 Retention of qualification. To retain qualification, the manufacturer shall submit a report at
12-month intervals to the qualifying activity. The qualifying activity shall establish the initial reporting date.
Each report shall contain a summary of the results obtained from both the sampling tests and the periodic
control tests performed during the 12-month interval. The number of lots and the quantities of assemblies
that have passed and failed shall be included. All reworked lots shall also be accounted for and
identified.
4.2.3.1 Nonconformance of qualification. If the manufacturer states that the test results indicates
nonconformance with the requirements specified herein but corrective measures acceptable to the
qualifying activity have not been taken, action may be taken to remove the failing product from the QPL.
4.2.3.2 Periodic qualification report. Failure to submit the report within 30 days after the end of each
12-month period may result in loss of qualification for the product. In addition to the periodic submission
of inspection data, the manufacturer shall immediately notify the qualifying activity at any time during the
12-month period that the inspection data indicates failure of the qualified product to meet the requirement
specified herein. Testing shall be in accordance with the procurement standard. No sampling or periodic
testing is required for a specific size if there has been no production for that size in the reporting period. If
there has been no production for a period of three years or longer at any location, sampling tests (two
items for each sampling test) shall be completed with items from the first production lot when production
is resumed for the applicable size at the applicable location.
4.3 Conformance inspection. Inspection of product for delivery shall consist of sampling tests.
4.3.1 Sampling tests. Sampling tests shall consist of the tests specified in table V performed in the
order shown. These tests shall be performed on a production lot basis. Random samples from the
production lot, without regard to quality, shall be selected in the inspection sample quantity specified in
table VI to form an inspection sample. If one or more defects are found in the inspection sample, then the
production lot shall be inspected for the particular defect and the defects removed. A second inspection
sample shall be selected from the production lot and all sampling tests again performed. If one or more
defective items are found in the second inspection sample, the production lot shall be rejected and shall
not be supplied to this specification.
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