Document ID: chunk:federal_register_of_legislation:F2025C00150:reg:1:p24
Version: federal_register_of_legislation:F2025C00150
Segment Type: reg
Provision Reference: reg 1 (pt 24/29)
Character Range: 271461–278873

Methods of airflow control: bleed valves, variable inlet guide vanes, variable stator vanes, rotating stator blades;
Compressor ratio.
15.5   Combustion section                                                                                                                                                                          1  2                                    —
Constructional features and principles of operation.
15.6   Turbine section                                                                                                                                                                             2  2                                    —
Operation and characteristics of different turbine blade types;
Blade to disk attachment;
Nozzle guide vanes;
Causes and effects of turbine blade stress and creep.
15.7   Exhaust                                                                                                                                                                                     1  2                                    —
Constructional features and principles of operation;
Convergent, divergent and variable area nozzles;
Engine noise reduction;
Thrust reversers.
15.8   Bearings and seals                                                                                                                                                                          —  2                                    —
Constructional features and principles of operation.
15.9   Lubricants and fuels                                                                                                                                                                        1  2                                    —
Properties and specifications;
Fuel additives;
Safety precautions.
15.10   Lubrication systems                                                                                                                                                                        1  2                                    —
System operation and layout and components.
15.11   Fuel systems                                                                                                                                                                               1  2                                    —
Operation of engine control and fuel metering systems including: electronic engine control (FADEC), systems layout and components.
15.12   Air systems                                                                                                                                                                                1  2                                    —
Operation of engine air distribution and anti-ice control systems, including internal cooling, sealing and external air services.
15.13   Starting and ignition systems
Operation of engine start systems and components;                                                                                                                                                  1  2                                    —
Ignition systems and components;
Maintenance safety requirements.
15.14   Engine indication systems
Exhaust gas temperature and interstage turbine temperature;                                                                                                                                        1  2                                    —
Engine thrust indication: engine pressure ratio, engine turbine discharge pressure or jet pipe pressure systems;
Oil pressure and temperature;
Fuel pressure and flow;
Engine speed;
Vibration measurement and indication;
Torque;
Power.
15.15   Power augmentation systems                                                                                                                                                                 —  1                                    —
Operation and applications;
Water injection, water methanol;
Afterburner systems.
15.16   Turbo-prop engines                                                                                                                                                                         1  2                                    —
Gas coupled and free turbine and gear coupled turbines;
Reduction gears;
Integrated engine and propeller controls;
Over speed safety devices.
15.17   Turbo-shaft engines                                                                                                                                                                        1  2                                    —
Arrangements drive systems, reduction gearing, couplings, control systems.
15.18   Auxiliary power units (APUs)                                                                                                                                                               1  2                                    —
Purpose, operation, protective systems.
15.19   Powerplant installation                                                                                                                                                                    1  2                                    —
Configuration of fire walls, cowlings, acoustic panels engine mounts, anti‑vibration mounts, hoses, pipes, feeders, connectors, wiring looms, control cables and rods, lifting points and drains.
15.20   Fire protection systems                                                                                                                                                                    1  2                                    —
Operation of detection and extinguishing systems.
15.21   Engine monitoring and ground operation                                                                                                                                                     1  3                                    —
Procedures for starting and ground run-up;
Interpretation of engine power output and parameters;
Trend (including oil analysis, vibration and borescope) monitoring;
Inspection of engine and components to criteria, tolerances and data specified by engine manufacturer;
Compressor washing and cleaning;
Foreign object damage.
15.22   Engine storage and preservation                                                                                                                                                            —  2                                    —
Preservation and depreservation for the engine and accessories and systems.

Module 16 Piston engine

                                                                                                                                                                                                      Level of knowledge for the category
                                                                                                                                                                                                   A  B1                                   B2

16.1   Fundamentals                                                                                                                                                                                1  2                                    —
Mechanical, thermal and volumetric efficiencies;
Operating principles: 2 stroke, 4 stroke, otto and diesel;
Piston displacement and