 In mid @-@ September , the press announced that on 8 May 1996 NSB had agreed that Class 71 's axles could receive a steel quality substandard to European standard and recommendation from the International Union of Railways . The reason was that the class would have a much higher weight than planned , and that this would cause the trains to operate more slowly and thus not be able to reach the airport in the desired 19 minutes . Class 73 inherited the same axle quality from the Class 71 order . On 11 September , Adtranz accepted responsibility for the axle problems , and stated that they would replace all axles free of charge , an operation which would cost them NOK 70 million . In October , Adtranz announced that they would also replace all the wheels on both classes . NSB was spending NOK 1 @.@ 5 million on brake discs and brake shoes per month . The parties continued to disagree on the size of compensation Adtranz should give NSB , with NOK 100 million separating the two . In July , NSB replaced DNV with <unk> as their inspection supplier for the class . NSB stated that this halved the cost of the inspections . The same month , Bombardier Transportation , who by then had taken over Adtranz , stated that they were going to replace the bogie frames for all the Class 71 and 73 , as well as Class 93 trains , as part of the compensation deal with NSB . 
