In the Aircraft Maintenance Engineering (AME) B1.3 Stream the theory part includes a broad range of foundational and specialized subjects.
Mathematics - applied math useful for aircraft load calculations stress analysis and understanding mechanical systems.
Physics - covers motion forces energy fluid mechanics and aerodynamics principles that matter in helicopter operations.
Electrical Fundamentals - understanding of electrical wiring circuits aircraft electrical systems important for helicopter controls and power systems.
Electronic Fundamentals & Digital Techniques / Electronic Instrument Systems - studying sensors, electronic controls, digital instruments that help monitor and control turbine engine helicopters.
Materials & Hardware - knowledge of aircraft grade metals fasteners structural materials, and hardware used in building or repairing aircraft.
Basic Aerodynamics / Aircraft Aerodynamics, Structures & Systems - learning how air moves around rotor blades how lift thrust drag work also studying helicopter structure rotor mechanics and overall systems.
Maintenance Practices & Safety Regulations - learning correct maintenance procedures, safety standards and official regulations (as defined by aviation authorities) necessary to keep aircraft airworthy.
Because B1.3 stream is for turbine engine helicopters there are more focused theoretical subjects related to helicopter systems:
Helicopter-specific theory, systems & structures - covering rotor systems transmissions hydraulic/pneumatic systems fuel systems flight controls rotor mechanics and turbine engine maintenance theory.
Human Factors & Aviation Legislation - understanding how human aspects affect maintenance, safety, and compliance with aviation laws and regulations.
This theoretical part gives you the necessary background to understand how helicopters work how engines rotors control systems, and electrical/electronic systems interact. It helps you build a strong foundation before you begin practical, hands-on training. In the B1.3 stream this theoretical knowledge is vital because helicopter maintenance and safety depend heavily on correct understanding of system materials aerodynamics and regulations.