Roles and Responsibilities Associated with Subpart O (ETSO/UKTSO)

TR24M09 | 1 day

Obtaining an ETSO approval for a part (or appliance) is a challenge, working between the regulatory obligations and minimum performance standards creates a tight window for efficient product development. Subpart O obligations cross between both (A)DOA and the POA management systems.

So, even though you are generating an approved part (or appliance), how well do you perform in getting that approval? And, if you have an AP-DOA, what are your DOA options?

Upcoming Training

13 May - 13 May 2025

Virtual Classroom

£540.00 (excl. VAT)

12 Nov - 12 Nov 2025

Virtual Classroom

£540.00 (excl. VAT)

In-Company Training

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Delivered exclusively for your company

How will this course benefit me?
This one-day course takes a practical approach to Subpart O of Part 21. It provides the necessary insight to ensure your organisation is fully compliant to obtain and maintain approval, to allow the intelligent adoption of the regulatory intent, without adding any unnecessary bureaucracy which could stifle innovation and creativity that is so essential for the design of TSO applications.

Using industry experience and examples of best practice, you will explore the key features of the Part 21 Subpart O regulation so that you will not only be able to ensure your organisation is fully compliant, but also that compliance is achieved with minimum disruption to the existing management system.

Completing this course will:
• Increase your organisation’s levels of compliance by ensuring you are familiar with the rules
• Allow your organisation to not only be compliant, but know how to optimise performance
• Minimise risk to you and your organisation through unwitting non-compliance
• Increase your confidence to engage and discuss the regulation with regulatory authority staff
• Create a design philosophy to proactively consider safety and certification


Key areas of focus
• The TSO concept, its evolution to today and also tomorrow
• Setting your organisation up for TSOA success
• The TSO lifecycle, from application through to surrender or removal in service
• Identifying how dependent Subpart O is on POA and DOA/ADOA
• AP-DOA versus DOA obligations, with respect to ETSO and how organisations can transition up
• The impact of ETSO Design Changes (21.A.611)
• The Subpart A obligations of ETSO Approvals


Is this course right for me?
This practitioner level course is specifically designed for Design and Production Organisations who hold (or intend to hold) approval for ETSO/UKTSO.

Individuals in the following positions would benefit from a comprehensive understanding on how Subpart O influences their daily responsibilities:
• Head of Design
• Office of Airworthiness (incl. Certification Managers)
• Compliance Verification Engineers
• Independent System Monitors (incl. Quality Assurance)
• Design Managers and Team Leaders

This course would also benefit:
• National Aviation Authority Managers, including from Military Airworthiness Authorities who are adopting EMAR 21
• Accountable Managers, who are ultimately accountable for DOA risk and performance
• Programme Managers responsible for scheduling design activities


Prerequisites
There are no prerequisites for this course and no specific prior knowledge is needed, however a basic understanding of Part 21 Subpart G / J will aid your understanding.


Course details
Course format: This course can be delivered virtually or in-person on a site suitable to the client. It is a balanced mix of group discussions, case studies, flipchart work and presentations. Managed syndicate exercises give you the opportunity to practice the application and evaluation of new processes and techniques.
Course level: Practitioner Level Training (P) is suitable for those who have worked in the subject for some time, are familiar with core terminologies and concepts and are looking to develop or update their level of knowledge and practical understanding..
Assessment process: No formal assessment. Formative feedback is provided by the facilitator.
Course size: 16 persons maximum at our Aviation Safety Academy or on-site at your facility.