Etihad Airways to Use 360 Foam Wash on GE90 and GEnx-1B Engines (08 Feb 2021) Etihad Airways has partnered with GE Aviation to launch GE’s 360 Foam Wash jet engine cleaning system. The Abu Dhabi-based airline will use GE’s 360 Foam Wash on the GE90 and GEnx-1B engines on Etihad’ Boeing 777 and 787 fleet. GE’s 360 Foam Wash is an alternative to the water wash method, and restores engine performance leading to reductions in fuel consumption. The process involves injecting a specially-formulated, proprietary solution that removes dust and dirt particles in the engine. The system is self-contained, allowing it to be used inside maintenance hangars