M N O P Magnetic chip detectors ...............................................6-28 Magnetic particle inspection ........................................10-8 Maintenance schedule procedures and  maintenance checklist ................................................11-17 Manifold pressure indicator .......................................10-23 Marking materials for combustion section parts........10-50 Mechanical failures........................................................9-2 Metal fixed-pitch propellers.........................................7-14 Metal particles in the oil ................................................8-3 Metal propeller inspection ...........................................7-21 Tachometer inspection .............................................7-21 Nick..............................................................................10-4 Nonfeathering ..............................................................7-14 Oil change ..................................................................11-21 Oil cooler ........................................................... 6-10, 6-15 Oil cooler flow control valve .......................................6-10 Oil filter bypass valve ....................................................6-7 Oil filter check valve......................................................6-7 Oil filters ........................................................................6-7 Canister housing filter ................................................6-8 Cuno oil filter .............................................................6-8 Spin-on filters .............................................................6-8 Oil injection lubrication of rotax 503 UL DCDE,  582 UL DCDI, and 582 UL DCDI...............................11-6 Oil jets..........................................................................6-25 Oil level check ...........................................................11-21 Oil pressure gauge..........................................................6-9 Dual-type oil pressure gauge......................................6-9 Oil pressure indicator.................................................10-23 Oil pressure regulating valve ............................... 6-8, 6-25 Oil pressure relief valve ..................................... 6-17, 6-25 Oil pump .............................................................. 6-7, 6-23 Gear-type oil pump...................................................6-23 Gerotor pump ...........................................................6-24 Oil tank.........................................................................6-22 Oil tanks ............................................................... 6-5, 6-14 Oil temperature bulbs...................................................6-16 Oil temperature indicator ................................. 6-10, 10-23 One or more inoperative thermocouples in  engine parallel harness...............................................10-65 On-speed condition ......................................................7-10 Operational effect of valve clearance ........................10-34 Opposed light-sport, experimental, and certified  engines .........................................................................11-7 Optical fire detection systems........................................9-4 Principle of operation .................................................9-4 Optimizing engine running ........................................11-20 Other disconnections......................................................8-9 Overspeed condition ....................................................7-10 Peening.........................................................................10-4 Personnel authorized to perform inspection and  maintenance on light-sport engines .............................11-2 Piston................................................................ 10-5, 10-12 Pin................................................................. 10-5, 10-12 Repairs....................................................................10-18 Pitting...........................................................................10-4 Pneumatic synchronization ........................................11-19 Pneumatic thermal fire detection ...................................9-4 Pour point.......................................................................6-3 Power check ...............................................................10-28 Powerplant vibration....................................................7-22 Pratt and Whittney PT6 Hartzell Propeller System .....7-32 Pre-flight checks ........................................................11-23 Pre-ignition ................................................................10-30 Pre-oiling....................................................................10-25 Preparation of engine for ground and flight testing .....8-13 Fuel system bleeding ................................................8-13 Pre-oiling ..................................................................8-13 Preparation of engines for installation ...........................8-3 Preparing the engine for removal...................................8-6 Preservation and depreservation of gas turbine  engines .........................................................................8-22 Preservation and storage of engines.............................8-18 Corrosion-preventive compounds ............................8-19 Heavy compound ..................................................8-19 Light mixture ........................................................8-19 Corrosion-preventive materials ................................8-18 Dehydrating agents...................................................8-19 Silica gel ...............................................................8-19 Pressure and scavenge oil screens................................6-16 Pressure indication .........................................................9-9 Pressure subsystem ......................................................6-31 Pressure system............................................................6-29 Principles of engine lubrication .....................................6-1 Principles of operation .................................................7-37 Propeller aerodynamic process ......................................7-2 Propeller auxiliary systems ..........................................7-17 Propeller balancing ......................................................7-24 Propeller blade ...............................................................7-3 Counterweights...........................................................7-9 Propeller check.............................................................8-14 Propeller controls and instruments.................................7-6 Propeller control system ..............................................7-31 Propeller governor .........................................................7-9 Oil on the propeller piston side ..................................7-9  I-4