US aircraft manufacturer Boeing is falling further and further behind European market leader Airbus in the face of its crisis. In March, the European manufacturer delivered 63 commercial aircraft, more than twice as many as its US rival, according to press releases issued by both companies on Tuesday. Airbus boss Guillaume Faury still has a long way to go to reach his target of 800 aircraft deliveries this year after only 142 were delivered in the first three months of the year. Boeing, however, is struggling with completely different problems following the near-accident on a 737 Max medium-ha…