would demand a discount from Adtranz. Following the incident, the trains would have to be in for maintenance examinations every , rather than every . With each exam costing NOK 50,000, NSB stated that this represented an extra cost of NOK 20 million per year. The contract between Adtranz and NSB states how often trains are to be maintained, and Adtranz holds a financial responsibility if the trains systematically need more maintenance than that. By 24 June, cracks had been found in two additional units. Similar cracks had occurred in the X2 trains, but after many years of operations. The same manufacturer had been used for the axles on both trains. In Sweden impurities in the steel, combined with undersized axles, were thought to be a cause, but replacements had caused the same issues. On 26 June, NSB stated that in April they had discovered that not checking the whole axle was a weakness in the maintenance procedures, but that despite this, no new examinations had been done. The reason this was ignored, was that there was nothing that indicated that this part of the axle represented a weak point. Ueland was unanimously fired as CEO by NSB's board on 29 June. Immediately afterwards his deputy Randi Flesland resigned, after she had rejected the board's proposal for her to become acting CEO. The same day, Adtranz assumed full responsibility for the defects, and guaranteed that they would cover NSB's costs. In a report, Adtranz stated that the axles should be examined every , which would mean weekly inspections. They stated that they hoped further inquiries would find a way to have less frequent inspections. This was rejected by NSB, who would not have sufficient trains to run the schedules with such a tight inspection scheme. Instead, Adtranz and NSB agreed to a new programme which would involve inspection every three weeks. The trains were put back into service on 13 July. The trains were only allowed to operate at conventional speeds and had to go through a weekly inspection. At the same time, NSB removed the surcharge on the Signatur services. NSB stated that they were considering revocation the purchase of the four trains which were still to be delivered. In addition to problems with axles, there were also issues with the braking and air conditioning systems. In mid-August, the tilting mechanism was disabled on all the trains because of