There are provided a method and apparatus for repairing samples included in container files having lost packets. In one embodiment, the aircraft valve assembly includes a flowbody having a ported end portion and a flow passage in which a valve element is movably mounted. The lath comprising a rigid structural expanded plastic material, the material selected to be impervious to rot in the presence of moisture. The top of the wheel rod is provided with a resilient fastener such that the wheel rod can make use of the through hole as fulcrum to provide extending and folding. The first and second radially outside parts are opposite with respect to an axis of the cylindrical base portion. The processor replaces the audio signal in the noise detection interval with the combined signal.