Downloaded from https://www.everyspec.com ADS-79D-HDBK CONTENTS PARAGRAPH PAGE G.1 PURPOSE AND SCOPE ..................................................................................111 G.2 REFERENCES AND APPLICABLE DOCUMENTS .....................................111 G.2.1 Standards ...........................................................................................................111 G.2.2 Papers ................................................................................................................112 G.3 DEFINITIONS ..................................................................................................113 G.4 DESCRIPTIONS ...............................................................................................114 G.4.1 Turboshaft Engine .............................................................................................114 G.4.2 Auxiliary Power Unit (APU) .............................................................................115 G.5 INTRODUCTION .............................................................................................116 G.6 GENERAL GUIDANCE ...................................................................................117 G.6.1 Life Usage Monitoring ......................................................................................118 G.6.2 Condition Monitoring ........................................................................................120 G.6.3 Lubrication Condition, Debris, and Filter Monitoring ......................................120 G.6.4 Oil Level Monitoring .........................................................................................121 G.6.5 Oil Pressure Monitoring ....................................................................................121 G.6.6 Fuel Contamination Monitoring ........................................................................121 G.6.7 Fuel Filter Monitoring .......................................................................................121 G.6.8 Fuel Pressure Monitoring ..................................................................................121 G.6.9 Auxiliary Power Unit Monitoring .....................................................................121 G.7 SPECIFIC GUIDANCE ....................................................................................122 G.7.1 Data Collection ..................................................................................................122 G.7.1.1 Sensors ...............................................................................................................122 G.7.1.2 Data Acquisition ................................................................................................125 G.7.1.3 Data Transfer .....................................................................................................126 G.7.1.4 Data Management ..............................................................................................127 G.7.2 Exceedance Recording ......................................................................................127 G.7.2.1 Hot Starts ...........................................................................................................127 G.7.2.2 Over Torque .......................................................................................................127 G.7.2.3 Overspeed ..........................................................................................................127 G.7.2.4 Over-temperature ...............................................................................................127 G.7.2.5 Vibration ............................................................................................................127 G.7.3 Life Usage Monitoring ......................................................................................128 G.7.3.1 Operating Hours ................................................................................................128 G.7.3.2 Start/shut Down Cycles .....................................................................................128 G.7.3.3 Operating Speed/Duration .................................................................................128 G.7.3.4 ITT / PTIT / EGT.
ITT, PTIT, and EGT ...........................................................128 G.7.3.5 Torque.
...............................................................................................................129 G.7.3.6 Lifing Algorithms ..............................................................................................129 G.7.4 Condition Monitoring ........................................................................................130 G.7.4.1 Performance Monitoring ...................................................................................131 G.7.4.1.1 Power Assurance Monitoring ............................................................................131 G.7.4.1.2 Safety Assessment .............................................................................................131 G.7.4.1.3 Software .............................................................................................................132 G.7.4.1.4 Accuracy and Repeatability ...............................................................................132 G.7.4.1.5 Verification/Validation ......................................................................................132 ix