Textron GSE TMSS-120/150/280

The Stewart & Stevenson Services, Inc. / Textron GSE TMSS Series Air Start Units are engineered to deliver dependable, high-volume pneumatic air for starting commercial and military jet engines across a wide spectrum of aircraft platforms. Designed for operational flexibility and rugged ramp performance, the TMSS-120, TMSS-150, and TMSS-280 models provide scalable air output to meet the specific demands of your fleet.

Each model offers distinct air delivery capacity to match operational requirements:

• TMSS-120: 120 lbs of air per minute
• TMSS-150: 150 lbs of air per minute
• TMSS-280: 280 lbs of air per minute at 40 PSIG (275 kPa)
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With discharge air temperatures of approximately 375°F (191°C) at the compressor, the TMSS Series provides the high-energy airflow necessary for reliable turbine engine starts in both routine and high-demand environments.

These units are fully self-contained, totally enclosed, diesel-driven systems designed for standalone operation. Available in trailer-mounted (TMSS) or truck-mounted (TRSS) configurations, they can be deployed wherever operational needs require—whether positioned strategically on the ramp or integrated into a mobile ground support fleet.

Each unit comes complete with all necessary instruments, controls, and accessories, ensuring safe, straightforward operation without reliance on external power sources. Built for durability and long-term service life, the TMSS Series is trusted by airlines, military operators, and ground handling providers worldwide.

Whether your operation requires the compact capability of the 120, the balanced performance of the 150, or the heavy-duty output of the 280, the Stewart & Stevenson / Textron GSE Air Start Unit Series offers a proven, mission-ready solution. Contact us today to identify the right configuration for your ground support needs.