MIL-DTL-9401C
4. VERIFICATION
4.1 Classification of Inspections. The inspection requirements specified herein are classified as
follows:
a. First article inspection (see 4.2).
b. Conformance inspection (see 4.3).
4.2 First article inspection. First article inspection shall be performed on one complete
parachute assembly, unless otherwise stated in the contract, when a first article sample is
specified (see 3.1). The inspection shall include the tests and examinations of 4.3.1, 4.3.2, 4.4,
and 4.5. Any defect or nonconformance shall be cause for rejection of the first article.
4.3 Conformance inspection. Conformance inspections shall include the examinations of 4.3.1,
4.3.2, 4.4 and 4.5. Sampling plans and acceptance/rejection criteria for 4.4 and 4.5 shall be as
specified in the contract or purchase order. Parachute assemblies which fail the acceptance
criteria shall be cause for rejection of the lot.
4.3.1 Component and material inspection. Components and materials shall be inspected in
accordance with all of the requirements of referenced documents unless otherwise excluded,
amended, modified, or qualified in this specification or applicable purchase document.
4.3.2 In-process inspection. Inspection of subassemblies shall be made to ascertain that
construction details and dimensional requirements, which cannot be examined in the finished
product, are in accordance with specified requirements. The Government reserves the right to
exclude from consideration of acceptance any material or service for which in-process inspection
has indicated nonconformance.
4.4 Examinations. The parachute assemblies shall conform to the visual and dimensional
examinations as specified in the TDP for the associated item. Deviations from the TDP shall be
classified in accordance with MIL-STD-849.
4.5 Tests.
4.5.1 Air Permeability. The number of completed canopies specified in Table I shall be selected
at random from production and tested for air permeability. The cloth of completed parachute
canopies shall be tested for air permeability to determine the compliance with the requirements
of 3.4. The test shall be performed in accordance with ASTM D 737. The number of
permeability readings shall be five in every fourth gore, excluding the top and bottom sections.
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