Mr. Svensson had from OICA requested any relevant information available on this Item. No such information was received. Mr. Westphäling noted that he had had difficulty in testing coupling installations where the coupling forces were lead through the second stage structure to the base vehicle structure. On the other hand there were also cases where such installations were successfully tested. It was noted that the level of operation is varying very much between second stage manufacturers. The split of responsibility between OEM of the base vehicle and the second stage manufacturer is key in this matter. Furthermore the variation in what kind of changes or additions that might be made by the second stage manufacturer is so wide that this item is extremely hard to catch in a few comprehensive paragraphs in the regulation. It was agreed to close this item without making any proposal for change to the regulation 55.