【航】Extended Range Operations with Two-Engine Airplanes 双发延程飞行
ETOPS
【航】Extended Twin Operation Syatem 双发延程飞行系统
ETOPs
【航】双发航空器延（长航）程运行
ETOPS
【航】Extended Twin engine Operations,双发延伸航程运行
ETOPS
【航】Extended Range Twin Engined Aircraft Operations,双发飞机延程运行
ETOPS
【航】Extended range Twin Engine Operations
ETOPS
【航】Extended Operations
ETOPS
【航】The operation of multiengine aircraft on routes that are, at some point, more than 60 minutes flying time from a landing airport; ETOPS requires regulatory approval. Note: the acronym ETOPS has multiple definitions, including Extended Operations of Turbine-engined Aircraft (ICAO), Extended Twin Engine Operations, Extended-range Twin-engine Operations, Extended Operations of Multiengine Airplanes (FAA) and Extended-range Twin-engine Operation Performance Standards.
ETOPS
【航】Extended Range Operation with two-engine airplanes
