What does ETOPS stand for in aviation?

ETOPS stands for Extended Twin Operations. This term refers to a set of regulations and guidelines that allow twin-engine aircraft to fly long distances from a suitable diversion airport. It is primarily designed to enhance safety and operational efficiency, ensuring that aircraft can operate on routes where they are more than 60 minutes away from a suitable alternate airport.

The significance of ETOPS lies in its requirement for airlines to adhere to strict maintenance and operational standards to ensure that their twin-engine aircraft are equipped to handle extended flights safely. This includes rigorous training for crews, stringent maintenance programs, and specific aircraft design features. As a result, ETOPS has enabled airlines to offer longer routes with twin-engine jets, which can provide cost savings compared to larger aircraft, while not compromising on safety.

In contrast, the other options do not accurately represent the standard established for twin-engine aircraft operations. Emergency Twin Operations and Emergency Temporary Operations focus incorrectly on emergency situations rather than the operational standards guided under ETOPS, while Extended Terminal Operations is not a recognized term in relation to aircraft operations.