AviationOnline for EASA Part-66 & Groundschool

for EASA Part-66 & Groundschool

EASA Part-66 Category A

Comprehensive Study Material for the Category A Maintenance Licence

EASA Part-66 Category A

Comprehensive Study Material for the Category A Maintenance Licence

EASA Part-66 Category A Licence

Comprehensive Study Material for the Category A Maintenance Licence.

The Cat A licence permits the holder to certify scheduled aircraft line maintenance and simple defect rectification.

EASA Part-66 study material

EASA Part-66 Cat A Package

We provide aircraft maintenance training schools with this fantastic category A package made up of fully comprehensive study material for all the modules listed below. The material can be supplied as high quality printed books, or in electronic form which can run on any device (tablet, smartphone or any computer).


Expand each of the Cat A modules below for more information:

Module 1 covers the basic arithmetic, algebra and geometry that lays the foundation for the equations used in the modules that follow (physics, electrical fundamentals and electronic fundamentals).
The physics module provides knowledge of matter (structure of atoms, molecules etc), mechanics (forces, movement, energy etc), thermodynamics, optics (light) and sound.
This module provides the fundamental electrical knowledge required for an aircraft maintenance engineer and the basis for the electronic fundamentals module that follows. The content includes electron theory, generation of electricity, capacitance, magnetism, inductance, transformers, generators and motors.
Module 5 includes data, databuses, logic circuits, microprocessors, fibre optics and typical digital aircraft systems.
This module begins by covering the wide range of aircraft materials in use today (such as alloys and composites) enabling students to apply their knowledge of atomic structure from the earlier physics module to understand of the characteristics and properties of these materials. The module then introduces components such as fasteners, pipes, springs, bearings, gears, cables and connectors which feature in the maintenance practices module.
This module focuses on typical aircraft maintenance activities that are performed such as the assembly, inspection and testing of components as well as the associated tools, safety precautions and engineering standards.
The basic aerodynamics module builds upon knowledge from the physics module and includes the atmosphere, aerodynamics and the theory of flight.

Within a maintenance environment it is essential that human factors are taken into account. By understanding human performance limitations, social psychology, communication and the factors affecting performance we can minimise the likelihood of incidents attributable to human human error.

This module covers the aviation regulatory framework (such as the role of the ICAO and EASA), certifying staff, aircraft certification and international requirements.

This extensive module builds upon the knowledge from earlier modules and provides explanations of fixed-wing aerodynamics and all the main systems found in modern civil aircraft: airframe, air conditioning, cabin pressurisation, instruments, electrical power, equipment & furnishings, fire protection, flight controls, fuel systems, hydraulic power, ice & rain protection, landing gear, lights, oxygen, pneumatics, water & waste, onboard maintenance systems, integrated modular avionics (IMA), cabin systems and information systems.

Note that there are two versions of this module available:

  • 11A is tailored for aircraft powered by turbine engines (applicable for those studying towards A1 or B1.1 licences).
  • 11B is tailored for piston engine aircraft (applicable for those studying towards A2 or B1.2 licences).

The substantial content within this module covers gas turbine engine fundamentals, performance, detailed explanations of each section of the engine and the supporting systems. Different types of gas turbine engine are considered and the module also includes installation, monitoring, ground running and storage.
Applicable to category A2 (Piston Engine Aeroplanes) and category A4 (Piston Engine Helicopters) licences, all 13 chapters of the syllabus are covered. This includes engine fundamentals, components, fuel systems, turbo charging, installation, monitoring, storage and preservation of piston engines.
This module covers the fundamentals of propeller design, construction, pitch control, synchronising, ice protection, maintenance and storage.

Need information on other licence categories?

Why Not Combine the Study Material with CBT?

EASA Part-66 study material and CBT

EASA Part-66 Cat A Package + CBT

Why not support the study material with highly interactive classroom trainers and other CBT?

Whilst the study material fully covers all the knowledge requirements your instructors and students will ever need, the CBT enhances the classroom experience and increases students' understanding of some of the more challenging subjects.