Composite cabin structures & monuments for Aircraft Interiors

DEMGY designs and manufactures composite cabin structures and aircraft monuments for major civil and military platforms, supporting Airbus, Boeing, Embraer, Tier-1 integrators and airline operators. Galleys, stowages, monument claddings and structural shells are engineered for FST compliance, structural performance and weight reduction, then delivered as finished, ready-to-install subassemblies. Cabin dividers and curtain systems are covered on the dedicated Aircraft Class Divider page.

The integration of DEMGY EIS (Germany) brings 60+ years of aerospace composite and cabin-monument expertise into the group. Combined with DEMGY Pacific (USA), this delivers a dual-source EU / North America capability, reducing single-source risk on long-running cabin programs and bringing manufacturing closer to OEM and Tier-1 final assembly lines on both continents.

From patented composite shell to finished cabin monument — one engineered value chain, sourced in Europe or North America.

Composite materials & processes for cabin interiors

Cabin structures and monuments must combine low weight, stiffness, chemical resistance and full FST (Fire, Smoke, Toxicity) compliance. Materials and processes are selected against Airbus ABD0031 and Boeing BMS requirements, within EASA and FAA certification environments.

Composite Material Systems

• Phenolic prepreg
  FST-critical panels, monument claddings, structural cabin surfaces
• Epoxy prepreg
  High-stiffness structural shells and brackets
• Polycarbonate / hybrid laminates
  Impact-tolerant semi-structural parts
• Carbon, aramid & glass reinforcements
  Tailored to stiffness, weight and cost targets
• FST-qualified thermoplastics
  PEI/Ultem™, PEEK, PEKK, PPS for injected and overmolded monument components

Manufacturing Processes

• Autoclave curing on aerospace-dedicated tooling
• Patented Schalen-Design construction
  Optimized weight / structure / geometric freedom on large parts
• Honeycomb panel construction
  Best stiffness-to-mass ratio for large claddings and dividers
• Hybrid overmolding
  Part-count consolidation on multi-piece monument assemblies
• 5-axis machining of high-performance polymers  for precision monument hardware

Applications for Airbus, Boeing, Embraer & Tier-1 Interiors

Cabin Monuments

• Stowages & doghouses
  Wall, ceiling and floor stowage, dry galleys, wardrobes, electronic racks, mission modules (A330, A320)
• Monument claddings
  Galley and lavatory fascias, finished and decorated
• Hat racks & overhead stowage liners
• Cabin Attendant Seat (CAS) Moving Adapter
  Patented pivoting adapter enabling one extra seat row, 270° hinge with integrated slip ring (signal + power), A320
• Seat Block Device
  Passenger-comfort module clipping to existing belts (cupholder, tablet holder, anti-slip surface)

Emergency Equipment

• Crash Axe
  Hardened steel body, hard-rubber handle, fire-resistant and electrically insulated, with custom plastic mounting bracket (standard Airbus)
• Crow Bar
  Compact alternative to the crash axe for space-constrained configurations
• Flight Kit
  Lightweight case for specific equipment (standard Airbus single-aisle)
• Pouches / Straps
  Flexible storage and securing solutions for emergency equipment (A330, A320, B737, B777)

Structural Cabin Components

• Load-bearing composite shells and structural housings
• Metal-to-composite redesigns for weight and part-count reduction

These assemblies are in service on the Airbus A320, A330, A350 and A380, Boeing 737, 777X and 787 and Embraer E2 programs. Each application is manufactured to customer-specific requirements, whether from the aircraft manufacturer or a Tier-1 system integrator.

Value Proposition for Aerospace OEM, Tier-1 & Airline Buyers

• Weight reduction on cabin structures
  Composite and metal-to-plastic redesigns cut mass per CS-25 and FAR 25 requirements, directly supporting DOC (Direct Operating Cost) targets on next-generation narrowbody and widebody platforms.
• Part-count consolidation
  Schalen-Design shells, honeycomb panels and hybrid overmolding combine multiple parts into single monuments, reducing assembly time and recurring cost for Tier-1 integrators.
• Turnkey monument delivery
  Structural bonding, painting, decorative finishing and electrical integration delivered as ready-to-install subassemblies, with FAI/PPAP documentation for Airbus and Boeing supply chains.
• Dual-source EU / North America
  Composite manufacturing in Germany (DEMGY EIS) and precision machining in the USA (DEMGY Pacific) de-risk single-source dependency on long-running programs.
• Aftermarket & retrofit
  Repair and redesign of existing monuments and structures for cabin reconfiguration and lifecycle extension.

Where These Parts Are Produced

Composite cabin structures and monuments can be sourced across the group depending on process, certification and program geography:

Material selection, structural design and qualification are handled by the group engineering organization, so a program can be developed once and industrialized on the most appropriate site.

Quality & Certifications

• AS9100 / EN 9100:2018
  Group aerospace quality framework (DIN EN 9100:2018 at DEMGY EIS, AFNOR)
• EASA Part 21J / 21G / 145
  Design, production and maintenance organization approvals (DEMGY EIS Euskirchen)
• Boeing Class I & II
  Machining qualification (DEMGY Pacific)
• FAA Repair Station Approval (DEMGY EIS Euskirchen)