Carbon footprint reduction by selective gold plating of contacts in aerospace grade electrical connectors

In the aerospace industry, where safety and reliability are paramount, every component contributes to the overall integrity of the aircraft. Additionally, sustainability in aerospace engineering is driving a shift toward selective material usage, especially in electrical connectors where contacts are traditionally fully gold-plated. In pursuit of resource efficiency and reduced environmental impact, selective plating techniques are being adopted to minimize gold usage while maintaining electrical performance. One such sustainability approach from our organization has been extended to one of our products used in aircraft without compromising standard requirements. Re-evaluating plating strategies to target only functionally critical areas. The internal surfaces of the contact component have been fully gold plated with the area of 1,176 mm². The idea is to have gold plating on the critical surfaces of area 570.21 mm² only. This will reduce gold plating area by 51.5%. which saves gold usage by 600 gm and Carbon Footprint reduction of 30,131 kg CO₂ per annum. Annual savings ~ $100K. The reduction in gold plating area could impose risk for electrical conductivity and corrosion resistance properties. To mitigate these risks parts are undergone electrical & environmental qualification tests accordance with Airbus standard tests are passed. The modification has been formally submitted to Airbus and got approval for implementation. This shows how can reduce environmental sustainability impact and costs without compromising safety and reliability requirements. It presents a scalable solution that can be technically implemented across a broad range of electrical connectors. In paper, we describe in detail the ideation and implementation.