An aircraft engine protection cover, also known as a shield or shroud, is a device designed to protect the aircraft engine from external environmental factors. These covers are typically made of specialized materials that feature properties such as flame resistance, water repellency, ultraviolet (UV) resistance, and tear strength. Their purpose is to prevent sand, rainwater, and other contaminants from entering the engine, reducing wear and damage to engine components and ensuring safe aircraft operation.

During ground operations, particularly during maintenance, storage, or transportation, aircraft engine protection covers are essential. They guard against foreign objects infiltrating the engine, thereby extending the engine's lifespan and reducing maintenance costs.