head temperature.................................................11-24 Exceeding of maximum admissible exhaust  gas temperature...................................................11-24 Exceeding the maximum admissible engine  speed ...................................................................11-24 Troubleshooting .....................................................11-24 Engine keeps running with ignition off ..............11-24 Knocking under load...........................................11-24 Troubleshooting EGT system ....................................10-65 Troubleshooting propellers ..........................................7-30 Troubleshooting turbine engines................................10-60 Turbine blade inspection............................................10-51 Turbine blade replacement procedure........................10-52 Turbine disk inspection..............................................10-51 Turbine engine analyzer uses.....................................10-60 Turbine engine condition monitoring programs ............8-3 Turbine engine cooling ................................................6-39 Turbine engine ground fire protection ...........................9-9 Turbine engine instruments........................................10-55 Turbine engine insulation blankets ..............................6-40 Turbine engine lubricants ............................................6-19 Bulk stability ............................................................6-20 Cleanliness ...............................................................6-19 Compatibility............................................................6-20 Load-carrying ability................................................6-19 Seal wear ..................................................................6-20 Vapor phase deposits................................................6-19 Turbine engine lubrication systems .............................6-21 Turbine engine maintenance ......................................10-45 Blending and replacement ......................................10-49 Causes of blade damage .........................................10-47 Compressor section ................................................10-45 Inspection and cleaning ..........................................10-46 Turbine engine oil system maintenance.......................6-32 Turbine engine operation ...........................................10-56 Turbine engine wet-sump lubrication system ..............6-32 Reservoir ..................................................................6-32 Magnetic drain plug..............................................6-32 Provision ...............................................................6-32 Sight gauge ...........................................................6-32 Vent or breather ....................................................6-32 Turbine lubrication system components ......................6-22 Turbine nozzle inlet guide vane inspection ...............10-53 Turbine oil filters .........................................................6-24 Turbocharger and control system...............................11-10 Turbo-propeller assembly ............................................7-31 Turboprop engines and propeller control systems .......7-30 Turboprop operation ..................................................10-60 Troubleshooting procedures for turboprop  engines....................................................................10-60 Turboprop powerplant removal and installation..........8-16 X-ray ............................................................................10-8 Warning systems..........................................................9-10 Wear metals and additives ...........................................6-21 Aluminum.................................................................6-21 Chromium.................................................................6-21 Copper ......................................................................6-21 Iron ...........................................................................6-21 Lead ..........................................................................6-21 Molybdenum ............................................................6-21 Nickel .......................................................................6-21 Phosphorous .............................................................6-21 Silver ........................................................................6-21 Tin ............................................................................6-21 Titanium ...................................................................6-21 Wet-sump lubrication system operation ......................6-13 Wood propeller inspection...........................................7-21 Valves .............................................................. 10-9, 10-12 Lapping...................................................................10-17 Reconditioning .......................................................10-16 Springs.......................................................... 10-9, 10-13 Train .........................................................................10-5 Viscosity ........................................................................6-3 Viscosity index...............................................................6-3 Visual inspection..........................................................10-3 Ultrasonic inspection ...................................................10-7 Pulse-echo ................................................................10-7 Resonance.................................................................10-8 Through transmission ...............................................10-8 Underspeed condition ..................................................7-10 Unfeathering ................................................................7-17 Operation ..................................................................7-39 Universal propeller protractor......................................7-23 Upsetting ......................................................................10-4 Usually .........................................................................10-3 Two-cycle engine.........................................................11-4 Two cylinder Rotax engine..........................................11-4 Two-stroke engines......................................................11-5 Two-way check valve ....................................................9-9 Typical dry-sump pressure regulated turbine  lubrication system ........................................................6-28 Typical dry-sump variable pressure lubrication  system ..........................................................................6-30 U V W X  I-6