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Modular licences and exclusion removal: train for the scope you need

Updated 3 min read Sigma Aerospace College

Training pathways · Published 12 November 2026

An operator may need an engineer to certify a defined scope of work rather than immediately cover every system in a full category. Sigma can help plan that scope, recognise existing competence and support the training needed to reach it.

Two different starting points

A modular licence outcome

An initial licensing pathway for a narrower scope, with exclusions limiting the privileges held. Applicable knowledge and experience requirements still need to be met for that scope.

Removal of an existing exclusion

An engineer already holds a licence with a particular limitation. The task is to identify and meet the requirements to remove that exclusion and extend the permitted scope.

“Modular licence” is also different from “CASA modules”, which are knowledge subject areas. The names sound similar; they do not describe the same choice.

Identify the Required Licence Privileges

  1. Send the current position

    Provide the licence, category, exclusions and relevant qualifications or results. For a first licence, explain your background and the work you need to cover.

  2. Agree on the intended privileges

    Identify the aircraft and systems involved, including the work that will remain outside scope.

  3. Review credit and the gaps

    We assess the evidence against the selected training requirements and plan the units, applicable exams and practical evidence still needed.

  4. Complete the pathway and application

    Work through the agreed training and experience requirements, then the licence application process. CASA decides the licence outcome.

Engineer working beneath a general aviation aircraft in the hangar
A useful licence scope starts with the maintenance work the engineer needs to perform.

Keep category exclusions and type-rating limitations separate

Removing a category exclusion is not an automatic removal of every limitation attached to an aircraft type rating. Read the exact wording on the licence and identify the requirement that applies to it. Send us the licence if the distinction is unclear.

Our category exclusion course finder starts with the category and exclusion code. If you need several exclusions removed, list them in the application so we can assess the combined scope and package the training price.

Choose the outcome and the training route separately

Modular versus full category describes the intended licence scope. Supported Part 147 training versus CASA self-study describes the learning and assessment pathway. CASA confirms that both pathways can support modular outcomes.

Sigma’s supported pathway brings the gap assessment, learning support and unit assessment together. It does not remove the obligations attached to the licence. A modular course package is also not a complete apprenticeship qualification: employers planning a formal apprenticeship should use the full qualification pathway.

Compare the modular and full category options before choosing the scope. If you already know the exclusion you need removed, you can go straight to the relevant course and application.

Your next step

Know the exclusion? Find the course and apply.

Include your licence and any other exclusions you want addressed. We will identify the training and evidence required for those exclusions.

Find an exclusion removal course

Written by the Sigma Aerospace College training team. AMROBA is cited as an industry source; these are Sigma’s explanations and services, not an AMROBA endorsement.

From the knowledgebase to your training

Ready to put this into practice?

Match the category and exclusion code on your licence to a course, then apply online.

Find my exclusion courseNeed help choosing? Enquire with our team
Continue your research

Useful links

College course information and CASA guidance for further reading.

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