Top-Line Turbulence: U.S. airlines are quietly showing some cracks in their revenue armor as fuel prices fall Share WhatsApp LinkedIn X Facebook Email Top-Line Turbulence: U.S. airlines are quietly showing some cracks in their revenue armor as fuel prices fall February 2015 2 min read Seth Kaplan Subscribe Purchase ($55 USD) Already a subscriber? Login Issue Overview For a quarter so good, there was an awful lot of talk about revenues turning bad.