Aircraft Maintenance

8 Hours Types of piston and gas turbine engines, their relative merits and demerits, and principles of operation. General constructional details and functions of each component. Principles, arrangement, and operation of fuel, lubrication, ignition, and starting systems. Accessories such as fuel pumps, oil pumps, barometric pressure controls, and air-fuel ratio controllers.

8 Hours Materials used in piston and gas turbine engines. Methods for checking engine components during pre-assembly, subassembly, and final assembly for correct alignment. Use of gauges and precision instruments. Inspection procedures for crack and defect detection: dye penetrant, magnetic particle inspection, X-ray, ultrasonic, and eddy current techniques.

Engine Testing, Controls, and Troubleshooting 8 Hours Engine controls and performance instruments: principles and functional checks. Testing procedures for piston and gas turbine engines using appropriate rigs and equipment. Fault diagnosis and rectification. Engine installation checks and procedures. Precautions before, during, and after ground running, including operating limitations, priming, bleeding, and troubleshooting.

Storage, Servicing, and Documentation 8 Hours Procedures for short-term and long-term engine storage. Priming and inhibition of accessories. Periodic servicing, defect reporting, and inspections post-shock landing. Maintenance of inspection records and flight clearance procedures. Types of stores and documentation procedures for storing components.

8 Hours Types of propellers and their mechanisms, including variable pitch and feathering systems, with associated control components. Lubricants, hydraulic fluids, and fuels used in piston and gas turbine engines. Maintenance objectives and legal requirements related to aircraft powerplants. Accident reporting and investigation procedures. Power augmentation systems, thrust reversers, and auxiliary power units (APUs).