STC Twenty One Limited

STC Twenty One Limited is an EASA approved Design Organisation based in the Midlands. We specialise in the approval of after market design changes for medium to large air transport aircraft/rotorcraft. Our EASA terms of approval includes changes to aircraft:- - Interiors - Structures - Environmental Systems - Hydro-Mechanical Systems - Avionic Systems - Electrical System - Repairs - Performance - Aerodynamics We also hold a privilege to issue Flight Conditions and Permit to Fly approvals. We have extensive experience in:- - VIP and VVIP installations - Flight Test & Evaluation - Aircraft Role Change - Freighter Conversions - Specialist...

Design,certification,repair approval,aircraft modifications,supplemental type certificates [stc],rotorcraft,flight test,structural substantiation,damage tolerance reports,cargo conversions,interior completions,electronic flight bag [efb],part 21,doa,and ads-b

Stc twenty one limited operates in the Airlines and aviation industry.

Stc twenty one limited's revenue is 11m - 100m

Stc twenty one limited has 11 - 50 employees.