MIL-PRF-83287G
4.2 Inspection conditions. Unless otherwise specified herein, all inspections shall be performed in accordance with
the test conditions specified in the "GENERAL REQUIREMENTS" of MIL-STD-202.
4.3 Qualification inspection. Qualification inspection shall be performed at a laboratory acceptable to the
Government (see 6.5) on sample units produced with equipment and procedures normally used in production.
4.3.1 Sample size. Twelve indicators of a single part number shall be subjected to qualification inspection.
4.3.2 Inspection routine. The sample shall be subjected to the inspections specified in table I, in the order shown.
All sample units shall be subjected to the inspections of group I. The sample shall then be divided equally into three
groups of four units each and subjected to the inspections for their particular group.
4.3.3 Failures. Failure in excess of those allowed in table II shall be cause for refusal to grant qualification
approval.
4.3.4 Extent of qualification. Qualification of indicators with anti-reflection coating will include qualification for those
indicators without anti-reflection coating, and vice versa. Qualification of indicators with diodes will include
qualification for those indicators without diodes. Qualification of indicators with one type of termination (see 3.4.3) will
include qualification for indicators with the other type of termination, provided six additional indicators with the other
type of termination are subjected to and successfully pass the qualification inspection shown in table I (all six samples
subjected to group I and two samples each subjected to groups I, II, and III). Qualification of a single PIN will include
qualification for indicators with different operating voltage ranges (see 3.1) on the same specification sheet provided
two additional indicators of each operating voltage range are subjected to and successfully pass the thermal shock
test specified in 4.5.8, except dielectric withstanding voltage and insulation resistance need not be measured.
4.3.5 Retention of qualification. Every 24-months, the manufacturer shall verify the retention of qualification to the
qualifying activity. Retention is based on meeting the following requirements:
a. The manufacturer has not modified the design of the item.
b. The specification requirements for the item have not been amended so far as to affect the character of the
item
c. Lot rejection for group A does not exceed the sampling plans.
d. The requirements of group B inspections are met, every 24 months.
4.4 Conformance inspection.
4.4.1 Inspection of product for delivery. Inspection of product for delivery shall consist of group A inspection.
4.4.2 Inspection lot. An inspection lot shall consist of all indicators of a single part number, produced under
essentially the same conditions, and offered for inspection at one time.
4.4.2.1 Group A inspection. Group A inspection shall consist of the inspections specified in table II, in the order
shown.
4.4.2.1.1 Sampling plan. All indicators shall be subjected to group A inspection.
4.4.2.1.2 Failures. If over 10 percent of the indicators in a lot fail, the lot shall be rejected.
4.4.2.1.3 Rejected lots. If an inspection lot is rejected, the contractor may rework it to correct the defects, or
screen out the defective units and resubmit for re-inspection. Such lots shall be separate from new lots and shall be
clearly identified as re-inspected lots.
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