The Boeing 787 and Airbus A350 earned their “greener” label honestly. Carbon-fibre composites make up roughly half of each aircraft, and the fuel-burn savings against the widebodies they replaced are real, around 20 to 25 percent.
The catch is the end of the story. Older aluminium aircraft can be stripped, parted out and recycled through mature channels. The 787 and A350 use thermoset composites, which cannot be remelted and reshaped, and the recovery methods that exist degrade the material. Airbus has only just begun testing how to reuse A350 wing structures, with Fairmat, and the first big retirement wave is still a decade or more away.
What I argue
- It is a strategy problem as much as a materials one. Somewhere between 25 and 35 airlines have built long-haul plans around these two types, so the future wave is already locked in.
- No one owns the aircraft’s afterlife. Manufacturers, airlines, lessors, recyclers and regulators each have a reasonable reason to point at someone else, which makes it a collective action problem dressed up as a technical one.
- Carbon accounting makes fuel burn highly visible and end-of-life treatment nearly invisible. Scope 3 reporting covers both, but only one gets real attention.
- The window is open but closing. Wind turbine blades show what happens when composites scale before recycling does. Aviation has a decade or so to avoid its own version.