MIL-DTL-81219C
4. VERIFICATION
4.1 Classification of inspections. The inspection requirements specified herein are
classified as follows:
a. First article inspection (see 4.3).
b. Conformance inspection (see 4.5).
4.2 Inspection condition. Unless otherwise specified, all inspections shall be performed
in accordance with test conditions specified in the applicable test method document or applicable
paragraph(s) in this specification.
4.2.1 Standard atmospheric conditions. Whenever the pressure and temperature existing
at the time of the test are not specified, the test shall be conducted at an atmospheric pressure of
29.92 inches of mercury (Hg) and at an ambient temperature 25 ºC ± 5 ºC (77 ºF ± 9 ºF).
4.3 First article inspection. First article tests shall be performed when specified by the
procuring document (see 6.2).
4.3.1 First article sample. The first article sample shall consist of three indicators for
each voltage and hour rating combination. The indicators submitted for testing shall have been
previously subjected only to the individual tests of 4.5.1. Samples shall have been manufactured
by the manufacturer's normal production process.
4.3.2 First article tests. The first article inspection shall consist of the examinations and
tests specified below and in the MS sheet. Tests shall be performed in the order shown. Failure
of any indicator to pass all the tests shall be considered a failure of the sample lot.
Requirement
Method
a.
Examination of product
3.2, 3.4
4.6.1
b.
Operational check
3.3.8
4.6.2
c.
Power consumption
3.3.10
4.6.11
d.
Dielectric strength
3.3.2
4.6.3
e.
Thermal shock
3.3.3
4.6.4
f.
Vibration
3.3.6
4.6.8
g.
Shock
3.3.7
4.6.9
h.
Salt Atmosphere
3.3.5
4.6.7
i.
Altitude
3.3.4
4.6.6
j.
Hermetic seal
3.3.9
4.6.5
k.
Life accuracy
3.3.11
4.6.10
l.
Low temperature storage
3.3.1
4.6.12
4.4 Conformance inspection. Conformance inspection shall consist of the individual
tests of 4.4.1 for each unit produced, as well as the sampling plan of 4.4.2.
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