Full Scope Design Organisation

Engineering and approval for your aircraft modification

EASA 21J design organisation

Certification of aircraft modifications


Stirling Dynamics can provide both engineering and approval for your aircraft modification. From simple modifications to complex projects, including installation and kits, we have unrestricted EASA 21J design organisation approval to support you with changes and repairs to Part 23, 25 & 27 aircraftOur design and airworthiness experts are trained, assessed and appointed as per EASA approved procedures and our organisation is regularly audited by EASA. Our most senior signatories are vetted directly by EASA. Stirling Dynamics’ EASA Part 21J Design Organisation approval number is EASA.21J.807.

Services include:

  • Full scope 21J design organisation for CS-23, -25, -27, -29p
  • Mechanical and electrical engineering
  • System integration, aircraft adaptation and transition
  • CAMO services

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