The Design Delegation Holders Seminars held by the Aircraft Certification Unit bring together participants from the industry, CAA, and other National Airworthiness Authorities (CASA, FAA, etc).

The seminars provide a forum for Design Delegation Holders and Part 146 Design Organisations' staff to discuss technical and professional topics, and network with other members of the industry.

Presentations from recent seminars

2020 Part 146/148/DDH seminar [PDF 1.7 MB]

The 2020 Part 146/148/DDH seminar was held on 19 November 2020 with approximately 60 attendees. The seminar had reduced content in a comparison to previous years and was delivered virtually for the first time.


2019 design delegation holders and Part 148 seminar

2018 Design Delegation Holders Seminar Presentations

2017 Design Delegation Holders Seminar Presentations

If you wish to see presentations from earlier seminars, please email

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