Skip to main content

About Our Aviation Engineering Services

Our aviation engineering services hold a Part 21 Subpart J DOA enabling it to certify UKCAA approved STCs and Major Repairs. Additionally, where a design change or repair is classified as minor, STC Twenty One Limited is authorised to approve them under the DOA using approval reference UK.21J.0198 through CAA.

Our History

Company History

STC Twenty One Limited was founded by John Dent and Peter Gaughan in the roles of Technical Director and Managing Director respectively.

The foundations of STC Twenty One Limited begin with Aero Engineering Design Limited (AED). CAA Approval Number AD/1769/89

AED was founded in 1988 by John Dent and was a UK CAA Approved Design Organisation prior to the inception of EASA.

STC Twenty One Limited continues to support the wide and varied customer base cultivated by AED since 1988 and is responsible for continued airworthiness support for all approved modifications issued prior to September 2003.

aviation engineering services stc twenty one core company history

Core Values

  • Safety is our top priority.
  • Communication – Communication – Communication.
  • Flexibility but with due diligence.
  • Professionalism, integrity and honesty.
  • Equal opportunities for ALL staff members.
  • Customer satisfaction for ALL our customers.
  • That hard work and customer satisfaction yields a healthy business.
  • Work together to recover from set backs.
  • To embrace change and move with the times.
aviation engineering services stc twenty one core values

UK CAA Approved Design Organisation

STC Twenty One

All aircraft modifications and aircraft repairs are managed by our UK CAA approved Design Office represented by STC Twenty One (UK.21J.0198).

What We Offer

Aviation Engineering Services

STC Twenty One Limited holds a Part 21 Subpart J DOA enabling it to certify UK CAA approved STCs and Major Repairs. Additionally, where a design change or repair is classified as minor, STC Twenty One Limited is authorised to approve them under the DOA using approval reference UK.21J.0198 through CAA.

Our employees are spread across our Avionics, Mechanical, Quality and Commercial Teams with a high level of experience and certification enabling the company to perform specialised services on engines and aircraft. Read more about our Services.

Aviation Engineering Services

Contact Us

Need more information or want to arrange to meet us?

+44 1332 576830

info@stc21.co.uk

Send a Message

© 2019 TWENTY ONE LIMITED. ALL RIGHTS RESERVED.
SITE CREDITS