Only 12 days ago Avianca, the world’s second-oldest active airline, announced plans for a big merger with Viva, the majority Irish owned low fares carrier in Colombia. At the same time, it was announced that Declan Ryan, a founding partner in Viva and its largest shareholder through his investment company Irelandia, will join the board of the holding company behind the combined airlines.  The deal, which is subject to requesting and obtaining all the necessary regulatory authorisations in Colombia and Peru, made headlines across Latin America as it brought together two great airline names – the Ryan family and the…