> It's unlikely that an airliner can maintain altitude on one engine, so the risk is high that once a problem occurs, things can go bad fast. There's nothing l

> It's unlikely that an airliner can maintain altitude on one engine, so the risk is high that once a problem occurs, things can go bad fast. There's nothing likely or unlikely about it - for an aircraft operating an ETOPS flight, the performance characteristics with one engine operative are well known, and taken into consideration when doing the mandatory diversion planning.