MIL-PRF-22885H
4.6.2.1 Sampling plan. Statistical sampling shall be in accordance with table X and table XI. A randomly selected
group(s) of samples are required for subgroup 1, subgroup 2, and subgroup 3. For acceptance there shall be zero
occurrences of defects.
4.6.2.1.1 Subgroup 1. A sample of parts shall be randomly selected in accordance with table XI, minor defect
sampling plan.
4.6.2.1.2 Subgroup 2. A sample of parts shall be randomly selected in accordance with table XI, major defect
sampling plan.
4.6.2.1.3 Subgroup 3 (contact bounce) (when applicable, see 3.1). Two samples shall be selected randomly from
each inspection lot.
4.6.2.1.4 Subgroup 4 (NVIS compatibility) (when applicable, see 3.1). The lot shall be 100 percent inspected to
the subgroup 4 NVIS compatibility test.
4.6.2.2 Rejected lots. If an inspection lot is rejected, the lot shall be 100 percent inspected for the defects noted.
The contractor may correct the defects or remove the defective units from the lot. The lot shall then be sampled
again in accordance with table XI. For acceptance, there shall be zero occurrences of defects. If there are one or
more defects in this second sample for the same characteristic that caused the original lot rejection, the lot is
rejected. Such lots shall be separate from new lots and shall be clearly identified as reinspected lots.
4.6.3 Periodic inspection. Periodic inspection shall consist of group B. Except where the results of these
inspections show noncompliance with the applicable requirements (see 4.6.3.1.4), delivery of products which have
passed group A shall not be delayed pending the results of these periodic inspections.
4.6.3.1 Group B inspection. Group B inspection shall consist of the inspections specified in table XII, in the order
shown. When a manufacturer has similar products qualified under different specification sheets, the qualifying
activity may authorize group B tests which do not require redundant testing on the similar features of these products.
Group B inspection shall be performed on sample units selected from inspection lots which have passed group A
inspection. A manufacturer's normal quality control tests, production tests, environment tests, and so forth may be
used to fulfill all or part of group B inspections; however, all of group B inspections shall be completed as specified in
4.6.3.1.1 Sampling plan. Group B inspections shall be completed in accordance with table XII within 36 months
after the date of notification of qualification and within each subsequent 36-month period. The sample units shall be
selected either from stock or a current production lot unless the Government considers it more practical to select a
sample from current production. Switches selected from stock shall have been produced after the date of notification
of qualification or subsequent to the date code of the previous group B inspection sample units. Group B inspection
shall be performed on sample units produced using the same manufacturing facilities and processes as units
normally offered for acquisition. When there has been no production of a particular type of switch for 36 months or
more, sample units shall be selected from the next production lot presented for acceptance and for each subsequent
36-month period. When the specification sheet covers more than one part number, the PIN(s) subjected to group B
inspection shall be the same PIN(s) specified for qualification; however, the group B inspection sample unit(s) need
not be submitted to inspections not specified for qualification.
4.6.3.1.2 Failures. If one or more sample units fail to pass group B inspection, the sample shall be considered to
have failed. Lamp failure shall not be considered a unit failure. When the lamp failure is noted, immediately a new
lamp is installed and the lamp functions, test shall then be continued, as required. A lamp or LED failure for
nonreplaceable item however (see 3.1), shall be considered a unit failure.
4.6.3.1.3 Disposition of sample units. Sample units which have been subjected to group B inspection shall not be
delivered on the contract or order but shall be kept on hand until the next inspection period for submittal to the
qualifying activity if so requested.
14
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business