A galley system including a first structure, a second structure, and a crew aisle between the first structure and the second structure. The method may utilize a lifting frame which acts to remove damaged slabs in a single operation also is used to reinstall a replacement slab or panel while acting as external reinforcement and also serving to align and secure the replacement panel in the void left by the removed section while under bedding material is installed and cured under the new panel. According to the invention, the first target required time of arrival is used for the formulation of the aircraft’s speed strategy. The stored electrical power can be supplied to an electric motor that is operable to power a hydraulic pump.