MIL-PRF-46002D
4.1 First article. When specified (see 6.2), a sample shall be subjected to first article
inspection in accordance with 4.1.1.
4.1.1 First article inspection. First article inspection shall consist of tests for all of the
requirements specified in section 3 and may be performed in any plant or laboratory approved by
the qualifying activity or its designated agent (see 6.4).
4.1.2 First article sample. The first article sample shall be 5 gallons of the oil
formulation for which first article approval is sought.
4.2 Verification methods. Acceptable verification methods included in this section are
visual inspection, and measurement, sample tests, full-scale demonstration tests, simulation,
modeling, engineering evaluation, component properties analysis, and similarity to previously
approved or previously qualified designs.
4.2.1 Verification alternatives. The manufacturer may propose alternative test methods,
techniques, or equipment, including the application of statistical process control, tool control, or
cost effective sampling procedures to verify performance. See the contract for alternatives that
replace verification methods required by this specification (see 6.2).
4.2.2 Operating requirements verifications.
4.2.2.1 Kinematic viscosity. To determine conformance to 3.3.1, the oil shall be tested
in accordance with ASTM D445, and exhibit a kinematic viscosity within the range specified in
table I.
4.2.2.2 Corrosion protection.
4.2.2.2.1 Corrosion protection (humidity cabinet). To determine conformance to 3.3.2.1,
the oil shall be tested in accordance with ASTM D1748 for a duration of 300 hours, and shall
pass.
4.2.2.2.2 Corrosion protection (vapor phase).
4.2.2.2.2.1 Test panels. Prepare three panels measuring 76 x 51 x 3.2 mm of the same
material and cleaned in the same manner as specified for the humidity cabinet test (see 4.2.2.2.1).
4.2.2.2.2.2 Polishing test panels. Polish the unnumbered side of the test panels to a
surface finish of 380 130 nanometers using a 240-grit aluminum oxide or silicon carbide
abrasive, with either cloth or paper backing. Do not use "wet or dry", waterproof, or iron oxide
abrasive. After abrading, clean the panels immediately, using the following procedure:
a. Wipe the abraded faces of the panels with clean surgical gauze to remove
superficial dust.
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