DEFSTAN 05-71(PT1)/2(2006) : 2006

Foreword
Introduction
1 Scope
   1.1 Coverage
   1.2 Objective
   1.3 Lot quality
2 Warning
3 Field of Application
4 Normative and Informative References
5 Definitions
   5.1 Acceptance Quality Limit (AQL)
   5.2 Switching Rules
   5.3 Inspection by Variables
   5.4 Acceptance Sampling by Variables
   5.5 Limiting Quality
   5.6 Reference Target
   5.7 Reference Range
   5.8 Collecting Target
   5.9 Nonconforming Projectile
   5.10 Acceptability Constant p*
   5.11 Launching System
6 Symbols
7 Similarities to BS 6002-2
8 Acceptance Quality Limit (AQL)
   8.1 Use
   8.2 Specifying AQLs
   8.3 Preferred AQLS
   8.4 Caution
9 Switching Rules
   9.1 Tightened Inspection
   9.2 Discontinuation of Inspection
   9.3 Resumption of Inspection
   9.4 Reduced Inspection
   9.5 Details
10 Production Continuity and Operating Characteristic
   Curves
   10.1 Continuous Production
   10.2 Non-continuous Production
   10.3 Operating Characteristic Curves
11 Planning
12 Choice of Inspection Level and AQL
13 Choice of Inspection Level and AQL
   13.1 Schemes Contained In this Defence Standard
   13.2 Special Schemes
14 Preliminary Operations
15 Standard Procedure under Normal Inspection
   15.1 Obtaining a Plan
   15.2 Obtaining the sample Data
   15.3 Determining Lot Acceptability
        15.3.1 Choice of Method
        15.3.2 Graphical method
        15.3.3 Tabular method
        15.3.4 Computer method
16 Procedure whilst Continuing Inspection
17 Detection and Accommodation of Outliers
   17.1 Detection of Outliers
   17.2 Accommodation of Outliers
18 Records
   18.1 Control Charts
   18.2 Records of p
   18.3 Lots that are Not Accepted
19 Operations of Switching Rules
   19.1 Original Inspection
   19.2 Start of Inspection
   19.3 Normal Inspection to Tightened Inspection
   19.4 Tightened Inspection to Normal Inspection
   19.5 Normal Inspection to Reduced Inspection
   19.6 Reduced Inspection to Normal Inspection
20 Discontinuation and Resumption of Inspection
21 Acceptance Curves and Operating Characteristic Curves
   for Tightened and Reduced Inspection
Diagram A - Sample Size Code Letters of Standard Single
            Sampling Plans for Specified Qualities at 95%
            and 10% Probabilities of Acceptance under Normal
            Inspection
Charts B to Q - Operating Characteristic Curves and Tables
Charts B.1 to Q.1 Acceptance Charts
Annex A - Table for Determining the Sample Size Code Letter
Annex B - Form p* Single Sampling Plans
Annex C - Constants for Determining the Maximum Sample
          Standard Deviation
Annex D - Producer's Risks
Annex E - Consumer's Risk Qualities
Annex F - Estimating the process Quality Level
Annex G - Outlier Test
Annex H - Statistical Theory for Consistency Proof
   H.1 Symbols
   H.2 The Normal Distribution
   H.3 The Process Fraction of Nonconforming Projectiles
   H.4 The Symmetric Beta Distribution
   H.5 Acceptability Criteria

Establishes single sampling plans and procedures for inspection by variables of the inherent ballistic dispersion of projectiles, when disturbances in azimuth and elevation are independent, or approximately so.