MIL-DTL-287J
4.3 Materials inspection. Materials inspection shall consist of certification supported by verifying data that the
materials (see 3.3) used in fabricating the assembly are in accordance with the applicable referenced specifications
or requirements prior to such fabrication.
4.4 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.
4.5 First article inspection. First article inspection shall be performed by the manufacturer after award of contract
and prior to production, at a location acceptable to the Government on sample units produced with equipment and
procedures normally used in production. This inspection consists of meeting all requirements of table II and of 4.5.1
through 4.5.4. First article approval is valid only on the contract or purchase order under which it is granted.
TABLE II. First article inspection.
Inspection
Requirement paragraph
Method paragraph
Group I (all sample units)
Visual and mechanical
examination
Insertion loss
Voltage standing wave ratio
(VSWR)
Group II (2 sample units)
Stability of insertion loss
Pressurization
Cold bending
Vibration, high frequency
Retention
Shock
Salt Atmosphere (Corrosion)
3.5.9
Moisture resistance
Thermal shock
Power handling capability 1/
Group III (2 sample units)
Bending test
Flexure
Axial twist 2/
Repeated twist 2/
Pressurization
1/ When specified (see 3.1).
2/ For twistable type only.
4.5.1 Sample size. Four assemblies covered by each specification sheet, for which production approval is
sought, shall be subjected to first article inspection.
4.5.2 Inspection routine. Sample units shall be subjected to inspection/test requirements specified in table II, in
the order shown.
4.5.3 Failures. One or more failures by the manufacturer shall be cause for refusal of production assemblies
from the specification sheet(s) failed.
4.5.4 Disposition of first article sample units. Sample units subjected to first article testing shall not be delivered
on any contract or purchase order. The Government reserves the right to retain sample units or to require the
manufacturer to furnish the sample units.
4.5.5 First article approval by similarity. Waveguide assemblies of similar classification (see 3.1) manufactured
on the same production line involving the same process, may be granted first article approval by the acquiring
activity provided the manufacturer already has a waveguide assembly of equal or greater complexity with current
first article approval.
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