MIL-PRF-17850B
4.1 Classification of inspections. The inspection requirements specified herein are
classified as follows:
a. First article inspection (see 4.2)
b. Conformance inspection (see 4.3)
4.2 First article inspection. First article inspection shall be performed on one compass
when a first article is required (see 3.1). The inspection shall include the visual examination of
4.4, an inspection of the compass dimensions and weight to determine conformance of 4.5, and
the performance and environmental tests of 4.6 (see Table 1).
TABLE 1. Verification methods.
Title
Requirement (paragraph)
Verification (paragraph)
Examination
3.2, 3.3, 3.3.1 through 3.3.6
4.4
Resistance to static charge
3.2
4.6.7
Dimensions and weight
3.3.2
4.5
Accuracy test
3.4.1
4.6.1
Freedom of rotation
3.4.2
4.6.2
Leakage test
3.5.1
4.6.3
Floatation
3.5.2
4.6.4
Drop test
3.5.3
4.6.5
Temp. operation test
3.5.5
4.6.6
4.3 Conformance inspection. Sampling for inspection shall be performed in accordance
with ASQC Z1.4. The inspection level shall be II; a sample unit shall be one compass. The
sample shall be inspected to the requirements of 4.4, 4.5, 4.6.1, and 4.6.3.
4.4 Visual Examination. The first article and each compass selected for conformance
inspection shall be visually inspected to determine conformance with 3.2, 3.3, 3.3.1 through 3.3.6,
and 3.6 through 3.8.
4.5 Dimensions and weight. Examination of the compass shall be made for compliance
with 3.3.2 and to the manufacturer's own design requirements. Compliance shall constitute
acceptance. Sampling shall be in accordance with ASQC Z1.4, inspection level S-3.
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