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Introduction
Normal
2.5 AQL
4.0 AQL
6.5 AQL
 
Tightened
2.5 AQL
4.0 AQL
6.5 AQL

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AAFES QA

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2.5 AQL - TIGHTENED INSPECTION

Lot Size Sample
Size
Acc Rej Criteria for Continuing Inspection
1 - 8 All * * N/A
91 - 150
(Cumulative S/S)
8
20
0
1
2
2
If 1 defective found, go to S/S of 20. **
151 - 280
(Cumulative S/S)
20
32
0
1
2
2
If 1 defective found, go to S/S of 32.
281 - 500
(Cumulative S/S)
20
50
1
2
3
3
If 2 defectives found, go to S/S of 50.
501 - 1200
(Cumulative S/S)
32
80
1
3
4
4
If 2 - 3 defectives found, go to S/S of 80
1201 - 3200
(Cumulative S/S)
50
125
2
5
6
6
If 3 - 5 defectives found, go to S/S of 125
3201 - 10,000
(Cumulative S/S)
80
200
3
8
9
9
If 4 - 8 defectives found, go to S/S of 200
10,001 - 35,000
(Cumulative S/S)
125
315
5
12
13
13
If 6 - 12 defectives found. go to S/S of 315
Over 35,000
(Cumulative S/S)
200
500
8
18
19
19
If 9 - 18 defectives found. go to S/S of 500

* Reject only defectives found.

** If lot size is 20 units or less, inspect all and reject only defectives found.

NOTE: Tightened sampling plans are used by AAFES for reinspection of a previously
failed lot and when a supplier's quality history indicates a higher than normal risk of
sub-standard quality being shipped. We recommend suppliers always use the
tightened sampling plans.

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