The TUG Model TMD-250 air start unit represents our 250 ppm variant of our family of air start units. Designed from a clean sheet of paper, these units offer lower operating costs and decreased environmental impact. The TMD-250 unit will handle the engine starting needs of all wide-bodied aircraft engines requiring 250 ppm of continuous airflow with the exception of the B-777.
One of the many standard features of the TMD-250 Air Start unit is the dual-pressure regulators with an “On Demand” automatic engine throttle control system. The operator simply selects either the air start or the air packs mode and the control system automatically adjusts the pressure and throttle settings. Benefits of the “On Demand ” system include fuel economy, decreased maintenance, and noise control. Safety, reliability, and maintainability are key ingredients of our design; decades of experience with both commercial and military GSE provide practical and efficient products.
Standard features such as large access doors, remote lube oil drains, and maintenance-free batteries ensure ease of service. These exceptional features, combined with our famous worldwide parts and support make the TMD-250 air start unit the best choice for your operations.
- 50% Quieter Operation: Improved operator environment and lower overall ramp noise level.
- 10% Smaller Package: Enhanced maneuverability and operational safety.
- 95% Parts Commonality: Shared running gear, body, burning with consumables, and electrical components.
- 8% More Fuel Efficient: Electronically controlled four-cycle engine, for lower life-cycle cost and logistics needs.


