Downloaded from https://www.everyspec.com ADS-79D-HDBK CONTENTS PARAGRAPH PAGE G.7.4.2 Engine Stall Monitoring ....................................................................................133 G.7.4.3 Anomalies and Fault Detection .........................................................................133 G.7.4.3.1 Engine Component Faults .................................................................................133 G.7.4.3.2 Instrument Faults ...............................................................................................133 G.7.4.3 .3 Diagnostics ........................................................................................................134 G.7.4.4 Prognostics ........................................................................................................134 G.7.5 Auxiliary power units ........................................................................................135 APPENDIX H EMBEDDED DIAGNOSTICS/PROGNOSTICS AND HEALTH MANAGEMENT (PHM) OF ELECTRONICS COMPONENTS...............136 H.1 SCOPE ...............................................................................................................136 H.2 REFERENCES AND APPLICABLE DOCUMENTS .....................................136 H.3 GENERAL GUIDANCE ...................................................................................137 H.3.1 Background ........................................................................................................137 H.3.2 Diagnostic Framework for Electrical/Electronic Systems ................................138 H.3.3 Current Diagnostic Test Methods ......................................................................139 H.3.3.1 Closed Loop Tests .............................................................................................139 H.3.3.2 Open Loop Tests ................................................................................................139 H.3.3.3 Test in In-Situ Environments .............................................................................140 H.3.3.3.1 In-Situ Offline Tests ..........................................................................................140 H.3.3.3.1.1 Type of BIT .......................................................................................................140 H.3.3.3.1.2 Online Tests .......................................................................................................140 H.3.3.4 Testing in Depot Environments .........................................................................141 H.3.4 Diagnostic Example ...........................................................................................141 H.3.5 Environmental and Operational Monitoring .....................................................142 H.3.5.1 Baseline Usage Condition .................................................................................142 H.3.5.2 Operational Environmental Load and Usage Condition ...................................142 APPENDIX I SAMPLE SIZES FOR MAINTENANCE CREDITS USING VIBRATORY CBM ON PROPULSION SYSTEMS .................................144 I.1 SCOPE ...............................................................................................................144 I.2 REFERENCES AND APPLICABLE DOCUMENTS .....................................144 I.2.1 References .........................................................................................................144 I.2.2 Applicable Documents ......................................................................................145 I.2.2.1 Government Documents ....................................................................................145 I.2.2.2 Non-Government Documents ............................................................................145 I.2.3 Notations ............................................................................................................146 I.3 GENERAL GUIDANCE ...................................................................................147 I.3.1 Background ........................................................................................................147 I.3.2 Concept of Confidence Interval and Hypothesis Testing ..................................148 I.3.3 Type I and Type II Error ...................................................................................148 I.3.4 Confidence Interval on Sample Mean ...............................................................149 I.3.5 Test on Population Proportion ...........................................................................151 x