To eliminate at least one inconsistency in a database collection containing a database and at least one copy database of the database, which inconsistency arises on account of the data in the database or in the copy database being changed, at least some of the operations which can create an inconsistency are allocated to defined conflict types. The phosphorous oxide may be present in an effective amount for reducing any photodarkening effect and increasing the saturation energy of the system. The control system configures the cyclic and collective pitch effectors to cause the rotor to autorotate. The crash sensor system further including a controller configured to compare the received pressure signal against a predetermined pressure threshold.