Rupert Stebbings was in the air flying from Medellín to Bogotá when a severe earthquake struck Colombia, killing at least 280 people and leaving over 300 still missing. The chief executive of Alma Air, a new seaplane venture backed by aviation entrepreneur Declan Ryan, landed in the aftermath of the quake last Monday. “On arrival my phone lit up messages of concern both in Colombia and overseas,” he said. “Fortunately, there was only some very minor damage where we lived and all of our loved ones were safe and sound.” The quake damaged roads, tunnels and bridges across Colombia, so…