The Boeing 787 Dreamliner was designed for long-haul, over-water routes, relying on Extended-range Twin-engine Operations (ETOPS) certification. However, a series of in-flight single-engine shutdowns, particularly involving the Rolls-Royce Trent 1000 engines, raised significant safety concerns. In response, regulators like the FAA and EASA downgraded the 787's ETOPS rating,