ABOUT US
We are Efficiency
We provide integral engineering services for the aeronautical sector worldwide.
We are focused on aircraft modifications and repairs market. Additionally, we manage aeronautical production, follow aerospace sector companies quality procedures, we offer our expertise as aeronautical consultants and are dealers for some equipment and systems.
We are recognized by the excellence of the working processes and our devotion for customer service, we do our best to respond to our customers’ needs adapting us to their standards and peculiarities, which allows us to answer any request in a very brief period of time, keeping competitiveness and high quality standards as far as results are concerned.
Since our company started operations back in 2007, over 4000 engineering projects have been developed and certified worldwide, over 2000 aircraft fly with our designs and we have work in over 100 different aircraft models.
Another of our main pilars is our commitment with people, and that is why we provide an integral development for our team of professionals.
We are DOA
S4A is the first company in Spain granted as Design Organization by EASA.
VISION
To be a world leader in the development of efficient and innovative aeronautical solutions that enable our customers’ aircraft to operate continuously, sustainably and safely.
MISSION
To passionately build a business ecosystem focused on stakeholders, with a focus on achieving day-to-day excellence and continuous innovation, thanks to the best trained and committed talent.
VALUES
At S4A, our relentless passion for the customer drives proactive engagement and continued resilience. Fueled by intellectual curiosity, we embrace exponential transparency, shaping our culture and defining our success.
Our certificates
EN ISO 9001 – Quality Management
EN 9100 – Aerospace Standards
EASA Part 21J DOA – Trusted Certification
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Approved
EASA
From
Customers
Projects carried out
Aircraft models
More than 380 customers trust us
Aircraft Modifications
Our expertise lies in designing and certifying both minor and major (STC’s) aircraft modifications. STC’s are certified by EASA and may be validated by other authorities (FAA, etc).
Aerospace Testing
A history of excellence in producing comprehensive test plans, procedures, and execution for aerospace industry needs.
Aircraft Repairs
Expertise in designing repairs for both metallic and composite materials, covering structural damages, as well as functional and decorative aspects.
Turnkey Aviation Projects
Comprehensive solutions from design, installation, to global certification of aircraft repairs and modifications.
Mastering EASA/FAA validations
We expertly navigate the cross-approval of aircraft modifications, ensuring your FAA-approved changes are EASA-validated, and the other way around. By customer’s request, our modifications can be certified in front other certification authorities (Transport Canada, Bermuda, Isle of Man, San Marino, etc)
Aerospace Consulting
Offering time-bound or ongoing aerospace consulting by a dedicated team of industry experts.