MIL-DTL-48557B
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 VI.
TABLE VI. First article inspection.
Examination
Section 3
Section 4
or Test
Requirement
Verification
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
Locating keys for M137A2 telescope
3.5
4.5
Mounting surfaces of M17A1 quadrant
3.6
4.6
Locating keys for M17A1 quadrant
3.7.1
4.7.1
Elevation level vial
3.7.2
4.7.2
Elevation adjustment range
3.7.3
4.7.3
Elevation plumb travel
3.7.4
4.7.4
Pitch adjustment range
3.7.5
4.7.5
Pitch plumb travel
3.7.6
4.7.6
Pitch adjustment backlash
3.7.7
4.7.7
Cant adjustment range
3.7.8
4.7.8
Cant adjustment backlash
3.7.9
4.7.9
Mount rigidity
3.7.10
4.7.10
Azimuth correction
3.7.11
4.7.11
Level vial illumination
3.8
4.8
Knob torque
3.9
4.9
Interchangeability of mounting surface of M171A1 mount
3.10.1
4.10.1
Interchangeability of mounting surface for M17A1 quadrant
3.10.2
4.10.2
Interchangeability of mounting surface for M137A2 telescope
3.10.3
4.10.3
Workmanship
3.11
4.11
4.2.1 First article quantity. First article inspections shall be performed on three (3)
complete units.
4.2.2 First article inspection to be performed. The first article inspection shall be
performed in accordance with Table VI.
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