MIL-DTL-48556B
4.1 Classification of inspection. 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. When specified, a sample shall be subjected to first article
verification in accordance with Table IV.
TABLE IV. First article inspection.
Examination
Section 3
Section 4
or Test
Requirement
Verification
Quadrant
3.3
4.3.2.1
Storage temperature
3.4.1
4.4.1
Operating temperature
3.4.2
4.4.2
Shock
3.4.3
4.4.3
Vibration "A"
3.4.4
4.4.4
Sealing
3.5
4.5
Purging
3.6
4.6
Cleanliness
3.7
4.7
Elevation counter excursion range
3.8.1
4.8.1
Correction counter excursion range
3.8.2
4.8.2
Elevation accuracy
3.8.3
4.8.3
Backlash
3.8.4
4.8.4
Cross level vial bubble
3.8.5
4.8.5
Correction counter setting effect on elevation
3.8.6
4.8.6
counter
Correction counter setting effect on elevation
3.8.7
4.8.7
level bubble
Knob torque
3.9
4.9
Counter numerals
3.10
4.10
Level vial illumination
3.11
4.11
Counter illumination
3.12
4.12
Interchangeability
3.13
4.13
Workmanship
3.14
4.14
4.2.1 First article quantity. First article inspections shall be performed on three (3)
complete units.
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