Downloaded from https://www.everyspec.com ADS-79D-HDBK CONTENTS PARAGRAPH PAGE I.3.6 Reliability Demonstration Test ..........................................................................151 I.4 DETAILED GUIDANCE .................................................................................153 I.4.1 Sample Size Method 1 .......................................................................................153 I.4.2 Sample Size Method 2 .......................................................................................156 I.4.3 Sample Size Method 3 .......................................................................................165 I.4.3.1 Weibull Analysis ...............................................................................................165 I.4.3.2 Minimum Sample Size Derivation ....................................................................167 I.4.3.3 CBM Thresholds and Treatment of CI Data .....................................................169 I.4.4 Case Study:
Analysis of the Input Data Algorithm 1 (DA1) CI for the Apache Nose Gearbox (NGB) ................................................................169 I.5 SUMMARY ......................................................................................................174 APPENDIX J SEEDED FAULT TESTING ............................................................................175 J.1 SCOPE ...............................................................................................................175 J.2 REFERENCES AND APPLICABLE DOCUMENTS .....................................175 J.3 DEFINITIONS ..................................................................................................176 J.4 GENERAL GUIDANCE ...................................................................................176 J.4.1 Step 1:
Foundation ............................................................................................177 J.4.2 Step 2: Pre-Testing ...........................................................................................179 J.4.3 Step 3: Testing ..................................................................................................181 J.4.4 Step 4:
Follow-on efforts ..................................................................................182 J.5 DETAIL GUIDANCE .......................................................................................182 APPENDIX K VERIFICATION AND VALIDATION OF CBM PROCESSES .....................184 K.1 SCOPE ...............................................................................................................184 K.2 REFERENCES AND APPLICABLE DOCUMENTS .....................................184 K.3 DEFINITIONS ..................................................................................................185 K.4 GENERAL GUIDANCE ...................................................................................190 K.4.1 Purpose ..............................................................................................................190 K.4.2 Discussion ..........................................................................................................190 K.4.3 General Considerations for Verification and Validation ...................................193 K.5 MAINTENANCE CREDIT V&V PROCESSES AND PROGNOSTICS .......198 K.5.1 Mechanical Health Credit V&V Process ...........................................................201 K.5.1.1 Mechanical Health Credit Verification Process ................................................202 K.5.1.2 Mechanical Health Credit Validation Process ...................................................204 K.5.2 Mechanical Health-based Prognostics V&V .....................................................206 K.5.2.1 Mechanical Health-based Prognostics Verification Process .............................206 K.5.2.2 Mechanical Health-based Prognostics Validation Process ................................208 K.5.3 Structural Usage Monitoring Credit V&V Process ...........................................210 K.5.3.1 Structural Usage Monitoring Credit Verification Process .................................212 K.5.3.2 Structural Usage Monitoring Credit Validation Process ...................................213 K.5.4 Structural Health Monitoring Credit V&V Process ..........................................214 K.5.4.1 Structural Health Monitoring Credit Verification Process ................................214 xi