EASA 21J DOA
Safety & ComplianceAerospace

“So much more than a signature”

 

About our DOA

ADSE is an independent Dutch Engineering Consultancy firm with 30 years of experience. Using our expertise on Planes, Trains, Ships & Automobiles, Design & Integration, Safety, Compliance & Certification, and Systems Engineering, we contribute to safe and sustainable transportation.

When focusing on ‘Planes’, an example of how we contribute is through our EASA Approved Design Organisation. Since its approval in 2011, ADSE’s DOA (EASA.21J.481) has grown into an experienced organization capable of designing and certifying your innovative system or new technology and of creating a certification strategy for your novel aircraft architecture. Our capabilities are recognized by the Dutch MAA, who have accredited us as a Military DOA in 2023. We focus on large aeroplanes (CS 25), and look forward to supporting our customers with Cabin Upgrades, installation of innovative equipment or sustainability improvements. Our customers range from airlines to equipment suppliers.

Does your company develop an innovative piece of equipment, one that for instance improves sustainability or passenger comfort, or enables sensing of conditions on board of the aircraft? ADSE helps companies like yours find the best way to enable installation and use of this equipment on board of aircraft. Do you need an elaborate cabin upgrade consisting of curtain and carpet installation, LOPA changes or Emergency Equipment Layout design and certification? We are happy to accept the challenge and make it work!

Every month we publish the Airworthiness Newsletter, in which you’ll find news on EASA and FAA level, as well as noteworthy ‘Other news’. It provides an overview of announced or published regulations, AMC and guidance materials, publications and events from the aviation safety authorities. The newsletter is free, you can subscribe by sending an email to airworthiness@adse.eu.

Typical Modifications

  • Cabin Upgrades. We design and certify the installation of curtains and carpets, LOPA changes including PSU relocation, and Emergency Equipment Layouts, and combinations of these modifications.
  • Installation of innovative non-flight critical equipment. Are you developing equipment that you would like to see applied in aircraft, for instance equipment that increases comfort, or sensing equipment? We support you with the following:
    • Defining qualification requirements
    • Design of interfaces with aircraft (systems) and installation provisions
    • Certification of the complete installation
  • Modifications that improve sustainability. Some examples:
    • Installation of alternative parts, made from new materials, with the aim to reduce weight, increase lifetime, avoid repair or replacement, and to improve circularity
    • Installation of equipment or systems that contribute to sustainability, for instance by reducing energy consumption

Available STCs

Our DOA has obtained the following STCs:

  • Certification of the Boeing 737-700 as PED Tolerant. (EASA 10063006 and TCCA SA17-117)
  • Certification of the Boeing 737-800 as PED Tolerant. (EASA 10083295)
  • Installation of AeroGlass Lens for window panes and AeroGlass Mirror for lavatory finishes. (EASA 10053278)

Fun fact: The AeroGlass STC for the Falcon 900 served as the ultimate proof that ADSE had successfully developed alternative AMC & GM to show that laminated glass can be safely applied in aircraft interiors. Until that time, the use of glass was not allowed.

For an up to date overview of all ADSE DOA modifications available for application to your aircraft, visit our page on the Modstore: https://modstore.aero/members/adse-bv?source=Company%20Logo

Related services

In addition to the work we do directly under our DOA, we also use our experience with certification in other ways, for instance by:

  • Providing CVEs and Key Personnel to other DOAs or POAs. To (temporarily) fill gaps in your organization, or expanding your capabilities for which you don’t have a full time work load.
  • Engineering and Certification Subcontracting to other DOAs.
  • Certification Consulting. Strategy and roadmap development, product certification advice (CS23 and CS25), support obtaining a DOA and/or POA organization.

Request for EASA approval of a modification, repair or other DOA support

To request a DOA related service, please contact our Head of Design Jenny van der Pols or fill in the form below with your request. We will always be in touch.

See what ADSE can do for you