Why composites took over
Composite materials — typically carbon-fibre reinforced polymers — combine high strength with low weight, and they resist fatigue and corrosion far better than aluminium. That is why modern aircraft such as the Boeing 787 and Airbus A350 use composites for a large share of their primary structure, from fuselage panels to wings and tails.
How repair differs from metal
Working with composites is fundamentally different from sheet-metal work. Damage is often repaired through bonded patches and layered repairs that must be built up, vacuum-bagged and cured under controlled heat and pressure, rather than riveted. Cleanliness, correct materials, precise curing cycles and careful process control are essential; a poorly executed bonded repair can be worse than no repair at all.
The inspection challenge
Composite damage is not always visible. An impact that leaves barely a mark on the surface can cause significant internal delamination underneath. That is why non-destructive testing — ultrasonic and other methods — is central to composite maintenance, allowing engineers to assess hidden damage before deciding on a repair.
Skills every engineer should build
As composite content rises across the fleet, familiarity with composite structures, damage assessment and approved repair processes becomes increasingly valuable. The advanced-composites chapters of the standard airframe syllabus are a strong starting point, and hands-on training turns that theory into a marketable specialisation.
A growing specialisation
Composite repair technicians are in demand across airlines, MROs and manufacturing. For an AME who enjoys precise, process-driven craft work, it is a future-proof direction as composite airframes come to dominate the skies.
Metal skills will always matter, but the aircraft of today and tomorrow increasingly reward engineers fluent in composites.