Aerospace Engineering Services UK
STC Twenty One
STC Twenty One Limited is a Design Organisation (DOA) located in the East Midlands. Our aerospace engineering services are approved and regulated under the UK Civil Aviation Authority (CAA).
Modifications Search
Modifications Search
Search over a thousand projects undertaken by STC Twenty One, to see if we already have a design that would suit your needs or to see what other modifications could be of use to your fleet.
Simply enter the aircraft type you have or a keyword that describes the type of modification you plan on adding to your aircraft, such as “life vests” or “lighting” and see what we have on file.
Then get in touch to see how we can help.
Aerospace Engineering Services UK
About
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.
At STC Twenty One, continuous professional development and the highest safety standards remain at the core of our operations. We recently gathered for a comprehensive Part 21 Continuation Training session, coupled with dedicated Safety Management Systems (SMS) training, reinforcing our commitment to regulatory excellence and robust safety cultures.
STC Twenty One Limited, along with other partner DOAs and distinguished guests, were invited by The National Flying Laboratory Centre (NFLC) Cranfield University to take part in an event showcasing the Saab 340B Flying Classroom. The event was held at the recently opened Digital Aviation Research and Technology Centre (DARTeC) on the Cranfield University Campus.
STC Twenty One Appoints Ashley Vergo as New Safety Management System (SMS) Manager.
To continue the celebrations for 20 years of STC Twenty One, the office embarked on a thrilling day out at the Royal International Air Tattoo.
STC Twenty One recently completed its first foray into Noise Certification testing following the installation of a Radome and Sensor Turret.
STC Twenty One Limited, along with other partner DOAs and distinguished guests, were invited by The National Flying Laboratory Centre (NFLC) Cranfield University.
We are thrilled to announce that we have started work on our new HQ!
Appointment of new HoOoBR
Head of Office of Belly Rubs
“I check that biscuits are Fresh and Tasty“
STC Twenty One Limited, along with other partner DOAs and distinguished guests, were invited by The National Flying Laboratory Centre (NFLC) Cranfield University to take part in an event showcasing the Saab 340B Flying Classroom.
STC Twenty One Limited recently completed a project with the assistance of an Innovation Grant from the Aerospace Unlocking Potential (Aerospace UP) programme (midlandsaerospace.org.uk/aerospace-up-programme) . The project was designed to help STC21 develop a new solutions for a potential customer base for a full UK-approved and manufactured solution.
Last week saw the completion 17 sorties with a total of 25 hours of airborne time gathering aircraft data as part of a validation exercise for the approval of a Flight Simulator Training Device. Despite supply chain and weather challenges, the flight programme has been a great success.
Whilst undertaking some routine housekeeping on some of our more historic design changes, it struck me, how many aircraft had been incorporated onto one of them in particular.
Over the summer months STC Twenty One likes to extent a warm welcome to a select number of students seeking an insight into the world of a UK DOA.
STC Twenty One has recently finished a bespoke set of drawings and certification that replaced the G1 & G4B galleys onto a Boeing 737 aircraft.
At STC Twenty One, we like to encourage the next generation of engineers to be able to experience the thrill of a busy design office and take the next step towards becoming fully fledged aircraft design and compliance verification engineers.
STC Twenty One has considerable experience in the conversion of aircraft to permit the transport of horses and live-stock.
Recently the team at STC21 have had the opportunity to refresh/enhance our knowledge base in the area of Safety Assessment of Aircraft Systems with R.G.W. Cherry & Associates.
STC Twenty One Ltd has recently onboarded a number of new team members with a view to growing this even further. Therefore in 2022, we have made it our mission to train and retrain all of the staff in every aspect of this business.
Following on from previous Livery installations with worldwide logistics company DHL (www.dhl.com), STC Twenty One is undertaking the design and certification for the installation of new Decals to show DHL being voted the No 1 “Great place to work®” in Europe/the world.
STC Twenty One has received the UK's first post Brexit FAA STC validation.
As you will be aware the use of Halon has been phased out across the aircraft industry due to its harmful effects to the environment and the damage to the ozone layer.
As you will be aware the use of Halon has been phased out across the aircraft industry due to its harmful effects to the environment and the damage to the ozone layer.
STC Twenty One Ltd is proud to announce this week that we have finished the certification for two Boeing 737 -800 aircraft to install and activate a CPDLC modification.
STC Twenty One Ltd made history today (8th April 2021) after successfully receiving the UK CAA’s first issued STC Certificate since the UK withdrawal from the EU.
ADS-B is a broadcasting system that does not require action from the pilot of the aircraft or any request from Air Traffic Control (ATC). The system enables aircraft to broadcast their identification position, altitude and velocity to other aircraft and to ATC. This is known as “ADS-B Out”. When an aircraft has the capabilities of receiving this information, it is known as “ADS-B In”.
STC Twenty-One is delighted to receive the STC for Alternate Cargo Nets on a Saab 340 A & B. This will allow STC Twenty-One to use different bay configurations. This provides more flexibility for the operator to be able to choose which cargo layout they’d like to take.
Full time and part time Permanent opportunities
Competitive Salary dependant on applicant experience.
STC Twenty One Limited has a requirement for a Mechanical Design & Certification Engineer with experience in Part 21 J. The Mechanical Design & Certification Engineer will be working on multiple large projects for one of the most active DOAs in Europe.
STC Twenty One Limited (STC 21) is a Design Organisation (DOA) located in the East Midlands. Our aerospace engineering service is approved and regulated under the UK Civil Aviation Authority (CAA).