AeroSHARK Enters Final Certification Phase for Airbus A330

Lufthansa Technik has entered the final phase of certification for AeroSHARK on the Airbus A330-200 and A330-300, extending a drag-reducing surface technology that is so far approved only for Boeing 777 variants. The company announced the step on 9 September 2026.

How the Technology Works

AeroSHARK is a riblet film inspired by shark skin, developed jointly by Lufthansa Technik and Surventis, formerly BASF Coatings. The film carries grooves about 50 micrometres high, aligned with the airflow, which reduce skin-friction drag over the surfaces where it is applied.

Lufthansa Technik quotes a saving of roughly 1 percent of fuel per flight. Because the film is retrofitted to existing aircraft, it is handled as a modification and requires a supplemental type certificate (STC) for each aircraft type.

Certification Route

The A330 STC is being pursued with the European Union Aviation Safety Agency (EASA). The test aircraft is an A330-300 operated by Discover Airlines, and the modification work is being carried out at Elbe Flugzeugwerke in Dresden.

Final-phase status means the flight and ground evidence is being completed and assessed, but approval has not yet been granted. No date for the STC was given.

Fleet Numbers So Far

As of August 2026, 22 aircraft were equipped with AeroSHARK. Lufthansa Technik says that fleet saves around 19 metric tonnes of kerosene and about 60 metric tonnes of CO2 each day.

Those figures cover the 777 fleet currently certified. Adding the A330 would extend the technology to a second widebody family.

Industry Context

Mastercard is supporting this certification phase through a strategic sustainability partnership with Lufthansa Group, according to the announcement.

For operators, retrofit economics will depend on application cost, downtime for film installation and the durability of the coating in service, all of which will matter more than the headline saving once the STC is issued.

Why Riblets Reduce Drag

Turbulent airflow over a smooth surface creates friction drag because small vortices continually exchange momentum with the skin. Riblets, microscopic grooves aligned with the flow, limit how far those vortices can move sideways across the surface, reducing the momentum transfer and therefore drag. The effect is small in percentage terms, but on long flights with high fuel burn, a saving of about 1 percent per flight adds up across a fleet.

The practical challenge is durability. The film has to stay bonded and keep its groove geometry through years of washing, UV exposure and temperature cycling, which is why in-service experience on the certified 777 fleet is an important reference for the A330 programme.

Lufthansa Technik has not said how many A330s could be modified once certification is complete, or which airlines have placed orders for the A330 kit. Those details will determine how quickly the A330 programme can scale compared with the 777 fleet, where 22 aircraft are already flying with the film.