The Phoenix TL175 lavatory service truck is designed to service commuter and narrow body, commercial aircraft. Phoenix uses a two tank system for lavatory servicing. The waste tank and flush tank are separate components fabricated from 304 stainless steel and are baffled in both directions. A hinged clean-out cover is provided on the waste tank for easy access to the dump valve to remove impediments. The waste tank has a tray to store the waste hose and prevent spillage of waste onto the top of the unit. The flush system uses a 12VDC electrical pump combination to dispense the degerm. The pump, motor and batteries are located in the rear of the unit. This eliminates the need for; adapting to the chassis engine, hydraulic systems, reservoirs, clutches and belts.