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|  MIL-E-48441A(MU)
3.6.13.2 Reticle accuracy.- The angular value between the boresight
cross and the maximum range graduation of the projected reticle pattern
shall be within 2.0 percent of the value specified on the reticle drawing.
3.7 Cleanliness.
a. Defects.- There shall be no evidence of moisture, grease,
fingerprints, condensates, fractures and adhesive separations on any
glass component when viewing through either end:
b. Dirt. - When viewing through the eyepiece with the image
intensifier tube energized, there shall be no more than fire particles
visible on the screen surface. The size of any particle shall not
exceed the -apparent width of the reticle line.
3.8 Sealing.- The elbow assebly shall shown no evidence of
leakage in excess of 0.2 pound per square inch gage (psig) when subjected
to an internal pressure of 5 0.10 psig for a minimum of 2 hours. The
interior atmosphere of the accepted elbow assembly shall contain nitrogen
(having a dew point at least as low as minus 25F at atmospheric pressure)
between 0.25 and 0.50 Pound Per square inch gage (psig).
3.9 Reliability.- the elbow assembly shall have a mean time
between failure (MTBP) of 2000 hours.
4. QUALITY ASSURANCE PROVISIONS
4.1 Responsibility for inspection.- Unless otherwise specified in
the contract or purchase order, the supplier is responsible for the per-
formance of all inspection requirements as specified herein. Except as
otherwise specified, the supplier may utilize his won facilities or any
other facilities suitable for the performance of the inspection require-
ments specified herein, unless disapproved by the Government. The Gov-
ernment reserves the right to perform any of the inspections set forth
in the specification where such inspections are deemed necessary to
assure supplies and services conform to prescribed requirements.
4.1.1 General provisions.- The component and subassembly inspection
requirements of MIL-F-13926 form a part of the quality assurance provisions
of this specification. Definitions of inspectio terms shall be as
listed in MIL-STD-109.
4.2 First article (initial production) approvel.- The requirement
for first article approval and the responsibility (Government or contracto-
r) for first article testing shall be as specified in the contract.
The sanple for first article approval test shall consist of three elbow
assemblies plus three each of all items covered by SQAP. The sample
shall be manufactured in the same manner, using the same materials,
equipment, processes, and procedures as used in regular production. All
parts and materials, including packaging and packing shall be obtained
from the same source 0f supply as used in regular production.
4.2.1 Government testing.- When the Government is responsible for
conducting first article approval tests, the contractor, prior to submitting
the sample to the Government, shall inspect the sample to insure that it
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