What is the main purpose of the Latrine Service Truck (LST)?

The primary function of the Latrine Service Truck (LST) is to service aircraft lavatories. This involves the removal of waste and the replenishment of lavatory supplies, ensuring that sanitation needs are met during the aircraft's operation. Proper lavatory service is essential for maintaining hygiene standards and passenger comfort during flights. The truck is specifically designed and equipped for this purpose, which distinguishes it from vehicles intended for other uses, such as transporting passengers, storing maintenance tools, or refueling aircraft. By focusing on lavatory service, the LST plays a crucial role in the overall cleanliness and operational readiness of aircraft.