MIL-DTL-25708F
4. VERIFICATION
4.1 Classification of inspections. The inspections specified herein are classified as follows:
a.
First article inspection (see 4.3).
Conformance inspection (see 4.4).
b.
4.2 Inspection conditions. Unless otherwise specified, the antennas shall be tested at temperatures of
25°C ± 10°C, barometric pressure of 650 millimeters to 800 millimeters of mercury, and relative humidity of
45 percent to 90 percent.
4.3 First article inspection. First article inspection shall be performed by the contractor, after award of contract and
prior to production, at a location acceptable to the Government. First article inspection shall be performed on sample
units which have been produced with equipment and procedures normally used in production. First article approval is
valid only on the contract under which it is granted, unless extended by the Government to other contracts. Due to
similarity of items covered by specification sheets, a manufacturer may apply for first article approval on items that are
not on the current contract. Approval may be granted by successfully performing first article tests on a combination of
antennas. The combination shall be as specified (see 6.2).
4.3.1 Sample size. Six antennas shall be subjected to first article inspection as specified in table III.
4.3.2 Inspection routine. Each sample shall be subjected to the inspections specified in table I in the order shown.
TABLE I. First article inspection.
Requirement paragraph
Test method paragraph
Inspection
Visual and mechanical inspection 1/
and 3.11
Antenna impedance
Sampling probe impedance
Sampling probe attenuation
Radiation pattern
VSWR
Polarization
High temperature
Temperature altitude
Temperature shock
Shock
Vibration
Humidity
Fungus
Salt fog
Seal test
Static load
Resistance to solvents
1/ Marking defects are based on visual examination only and shall be charged only for illegible, incomplete, or
incorrect marking.
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