Technical problems currently dogging the US aircraft manufacturer Boeing threaten to burden the entire aviation industry, according to its main rival Airbus. “Boeing’s problems could cause more people to question how safe aviation actually is,” Christian Scherer, head of civil aircraft manufacturing at the European company, said in an interview with German business magazine Wirtschaftswoche published on Saturday. This casts “a shadow over the entire industry,” he added. According to Scherer, it is now more difficult to certify new aircraft. “There is greater pressure from all observers, includ…