Christchurch Airport chief executive Malcolm Johns. Photo / SuppliedChristchurch Airport chief executive Malcolm Johns finishes in the role at the end of the year and in 2023 will lead Genesis Energy. For Christchurch Airport it’s been a hell of a decade - earthquakes, a tragic terror attack, the Port Hills fire and global pandemics. Many people were interested by Christchurch Airport forming a partnership with Hamburg Airport to work together on further decarbonisation of airports. * The airport’s current chief aeronautical and commercial officer Justin Watson will replace Johns as chief executive.