The GCAA is the UAE's federal civil-aviation authority. For UAE-registered aircraft, CAR 21 provides the certification framework for products, parts, design organisations and changes to type design. The precise approval route depends on the aircraft and the proposed modification.
GCAA CAR 21 guidance shows that even apparently interior-only work can become a design change: seating-configuration changes and lightweight floor-panel changes are examples within the supplemental-type-certificate guidance. The engineering organisation therefore needs to review the concept before Bella or the owner assumes a layout change is cosmetic.
Where the project uses EASA or FAA approved data, their certification standards can also be relevant. EASA CS 25.853 and FAA 14 CFR 25.853 both impose flammability requirements on applicable cabin materials and decorative surfaces; applicable seat designs are subject to crashworthiness requirements such as CS / CFR 25.562.
The UAE has substantial cabin-modification capability. Etihad Engineering in Abu Dhabi states that it holds EASA Part 21J and GCAA Part 21J Design Organisation approvals and can perform minor and major (STC) cabin conversions on large commercial and VIP aircraft. Its Abu Dhabi cabin services also include on-site flammability testing, seat / carpet fabrication, galley, sidewall and monument refurbishment.
Dubai also has business-jet refurbishment capability. Jet Aviation's Dubai facilities offer interior refurbishment and documented their first full Dubai business-jet cabin refurbishment on a Gulfstream G450 in 2023. ExecuJet MRO Services Middle East completed a full Legacy 650 cabin refurbishment in 2026, including re-varnished cabinetry, carpet, sidewalls, ceiling, replating and redesigned / reupholstered seats.
Bella's design appointment should therefore be integrated with the owner's chosen OEM, approved Design Organisation, Part 145 / MRO, completion centre and suppliers. We can lead the aesthetic and owner-experience brief, but those approved entities own the airworthiness data, certification, manufacture, installation and release-to-service responsibilities.
- Confirm aircraft model, serial number, registry and current approved configuration
- Identify the Design Organisation / engineering approval route before changing layout
- Confirm whether the work is repair, cosmetic refurbishment, minor change, major change or STC scope
- Confirm the applicable flammability / material-test requirements
- Freeze seat models and approved track positions before final interior planning
- Track material / monument weight and update weight-and-balance through the responsible organisation
- Confirm approved power, CMS, IFE and connectivity architecture before adding devices
- Use completion-centre / OEM approved materials, processes and suppliers where required
- Coordinate production drawings and installation instructions with the approved organisation
- Preserve emergency egress, signs, safety equipment and maintenance access
- Complete all required conformity, testing, documentation and return-to-service before aircraft operation
Read the current UAE GCAA — CAR 21 Certification of Aircraft and Related Products ↗