MIL-PRF-22885H
4.2 Test equipment and inspection facilities. Test and measuring equipment and inspection facilities of sufficient
accuracy, quality, and quantity to permit performance of the required inspection shall be established and maintained
by the contractor. The establishment and maintenance of a calibration system to control the accuracy of the
measuring and test equipment shall be in accordance with NCSL Z540.3, ISO 10012 or approved equivalent.
4.3 Inspection conditions. Unless otherwise specified herein, all inspections shall be performed in accordance with
the test conditions specified in the general requirements of MIL-STD-202.
4.4 Qualification inspection. Qualification inspection shall be performed at a laboratory acceptable to the
Government (see 6.3) on sample units produced with equipment and procedures normally used in production.
4.4.1 Sample size. The number of switches to be subjected to qualification inspection shall be as specified in table
XI.
4.4.2 Inspection routine. Sample units of switches shall be subjected to the qualification inspection specified in
table IX, in the order shown. All sample units shall be subjected to the inspection of group I. The sample units shall
then be divided as specified in table IX and subjected to the inspection for their particular group. All applicants for
qualification approval under this specification shall demonstrate that each of their items conforms to all the
requirements specified in the applicable documents (see 3.1), singularly and in combination with all other previously
qualified items, regardless of manufacturer.
4.4.3 Failures. One or more failures shall be cause for refusal to grant qualification approval. Lamp failure shall
not be considered a unit failure; when the lamp failure is noted, immediately a new lamp is installed and the lamp
functions test shall then be continued, as required. A lamp or LED failure for a nonreplaceable item shall be
considered a unit failure (see 3.1).
4.4.4 Extent of qualification.
4.4.4.1 Single submission. Qualification shall be restricted to the type submitted.
4.4.4.2 Group submission. The extent of qualification shall be in accordance with the applicable specification
sheet.
4.4.5 Verification of qualification. Every 12 months, the manufacturer shall provide verification of qualification to
the qualifying activity. Continuation is based on meeting the following requirements:
a.
Design of switch has not been modified (every 12 months).
Verification of group A lot acceptance (every 12 months) (see 4.6.2).
b.
Periodic group B inspection (every 36 months) (see 4.6.3).
c.
4.5 Inspection requirements for category II switches (see 3.2.2). Inspection requirements for category II switches
shall be performed by the contractor after award of contract, and prior to production. Additional tests to verify
suitability of the variations from the category I switches shall be performed as specified (see 6.2.2).
4.6 Conformance inspection. Conformance inspection of product for delivery shall consist of group A inspection.
4.6.1 Inspection lot. An inspection lot shall consist of all category I and category II switches of the same
specification sheet, of the same enclosure requirement, temperature characteristic, vibration grade, shock type, and
interface and dimensions, produced under essentially the same conditions, and offered for inspection at one time.
Similar switches conforming to these requirements but having different circuitry may be combined to form a lot.
4.6.2 Group A inspection. Group A inspection shall consist of the inspections specified in table X. The inspections
may be performed in any order, except dielectric withstanding voltage shall be performed after seal testing when seal
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