Abstract: An apparatus for cleaning a waste line of an aircraft includes: a source of cleaning solution; a hose in fluid communication with the source of cleaning solution; and a nozzle secured to a distal end of the hose and defining one or more holes for expelling the cleaning solution into a waste line. The nozzle may be provided with a protective cover composed of a plastic material that fits over and engages a distal tip of the nozzle and/or a protective ring composed of a plastic material that fits around and engages a central body of the nozzle. The apparatus may further include a connection assembly defining a first port being configured to be connected to the waste line, a second port being configured to receive the hose and the nozzle, and a third port being configured to be connected to a vacuum pump.