Capabilities
Aircraft Retrofit & Cabin Upgrades
21 Aero delivers aircraft retrofit, modification and cabin upgrade services from a UK CAA 21G approved production facility in Warrington. Whether you need a targeted cabin refresh or a full interior retrofit programme, our engineering team manages the process from design through certified installation — keeping aircraft turnaround times tight without compromising on approval standards.
Aircraft Modification Services.
From minor cabin alterations to structural interior changes, our modification work is carried out under UK CAA Part 21G production approval, ensuring every change is fully documented, traceable and compliant. We work with airlines, lessors and MRO partners to plan modification programmes around operational schedules, minimising aircraft-on-ground time.
How Can 21 Aero Help You?
At 21 Aero, we provide all stages for aircraft Retrofit & Upgrades. From 3D Prototyping and Design services to precision machining, we can bring your aircraft interior concepts to life.
3D Prototyping & Design
Our aircraft interior upgrade and modification services are characterised by a keen focus on design and development. We work closely with our customers to understand their specific requirements and translate them into customised solutions that match their vision. Our team of experienced designers uses advanced software and tools to create detailed concept drawings and 3D models that capture the essence of the design, allowing our customers to visualise the final product.
Once the design is finalised, we leverage our 3D printing technology to produce high-quality prototypes that provide a realistic representation of the finished product. This process enables our customers to make informed decisions about the design, ensuring that they are satisfied with the end result.
Precision Machining For Aircrafts
We offer a comprehensive range of manufacturing capabilities, including tooling manufacture, sheet metal assembly and fabrication, welding, drilling, riveting, turning, milling, and CNC routing. Our skilled technicians enable us to produce high-quality parts and components to meet your exact specifications.
Our team of skilled machinists and modern machining technology enable us to create water fittings, airline branding signs, seat pallets, and custom IFE housings to exacting standards.Whether you need a single prototype or a high-volume production run, we have the expertise and resources to deliver precision results.
Airplane Refurbishment & Cabin Retrofit
A cabin retrofit is one of the most effective ways to extend an aircraft’s operational life and improve the passenger experience without the cost of a full fleet replacement. Our retrofit capability covers:
- Interior panel and trim replacement or upgrade
- Seating configuration changes and cabin layout modification
- Galley and lavatory refurbishment
- IFE and in-seat power integration alongside retrofit work (see our IFE & Systems Integration page)
- Full cabin refurbishment projects, coordinated end-to-end
Plane Cabin Modification for Airlines & Lessors
We understand that every retrofit or modification programme carries commercial pressure — aircraft not flying is aircraft not earning. Our team plans each project against your operational calendar, with clear milestone reporting throughout, so you always know exactly where a modification programme stands.
Why Choose 21 Aero for Aircraft Retrofit
UK CAA 21G approved production facility
Experienced engineering team with a track record across airline and lessor cabin projects
Full documentation and traceability on every modification
Coordinated retrofit programmes spanning interiors, seating, IFE and cabin systems
Our Expertise
Capabilities
We are a leading aerospace manufacturer, with a passion for pushing the boundaries of what’s possible in the skies.
21 Aero Limited
Elevating aviation experience through innovation and design
UK CAA 21G and 145 Production and Repair Facility