A significant innovation in the Do228 NXT programme is the introduction of Tartaric Sulfuric Acid Anodizing (TSAA), a surface treatment method chosen for its technical, ecological and operational benefits. This process improves corrosion protection, enhances service life and contributes to the aircraft’s long-term operational reliability.
“Reliable corrosion protection for a long service life and high operational reliability of the Do228,” the company stated, highlighting the importance of material protection in aviation. Even minimal corrosion can affect structural safety, which is why advanced coatings such as anodizing are essential for safety and maintenance efficiency.
The TSAA process replaces the Chromic Acid Anodizing used in the previous Do228 NG model and complies with the European Union’s REACH chemical regulations. It offers a thicker oxide layer for increased durability and better adhesion, making it a more environmentally responsible alternative.
As part of the Do228 NXT’s development, numerous systems and production techniques have been modernised to reflect current aviation standards. “With the introduction of TSAA, General Atomics AeroTec Systems has once again underscored its commitment to combining modern aviation technology with sustainability and the highest levels of technical quality and safety,” the company added.
Following the successful completion of all test runs earlier this year, the TSAA process will now be fully integrated into series production of the Do228 NXT. This marks a further step by GA-ATS in delivering technically advanced and sustainable aircraft solutions.
