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|  MIL-F-51440A(EA)
4.4.3 Inspection procedure.
Sample filter shall be
4.4.3.1 For examination and nondestructive tests.
examined and tested in accordance with the classification of defects and with
MIL-STD-105. The inhalation resistance test (4.4.4.2) shall be performed prior
to any pressure leakage testing (4.4.4.1).
4.4.3.2 For destructive tests. The back and front housings shall be tested
for physical properties as specified in 4.4.4.3 to meet the requirement of 3.7.
The acceptance number is zero.
4.4.3.3 For critical defects. Each item in the lot shall be inspected for
critical characteristics listed in the classification of defects*
4.4.3.4 Classification of defects.
M46 (Drawing D5-3-951).
(a) Filter, air, chemical-biological:
Acceptance standards
Defects
Categories
Critical:
4.4.4.1
Leakage
1
AQL 1.0 percent defective
Major:
Component missing or incorrectly
101
assembled
Major defects listed in MIL-STD-407
102
Marking incorrect
103
Workmanship not in MIL-STD-407 (3.5)
104
4.4.4.2
Inhalation resistance
105
AQL 4.0 percent defective
Minor:
Minor defects listed in MIL-STD-407
201
(b) Packaging inspection (section 5).
Defects
Categories
None defined
Critical:
AQL 1.0 percent defective
Major:
Container incorrect
101
102
Package incorrectly assembled
103
Container incorrectly closed
Marking missing, incorrect or
104
illegible
5
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