An air start unit (ASU) is a diesel-powered compressor that supplies high-volume air to start an aircraft’s main engines when the APU is unavailable. Victory GSE sells and leases used air start units from brands such as TUG, TLD, Davco and Stewart & Stevenson. Every unit shown below is in stock in Los Angeles. Request a quote for pricing and lease terms.
WHY CHOOSE VICTORY FOR AIR START UNITS?
Wide Selection & Rapid Shipping
We maintain active inventory of air start units across multiple configurations, capacities, and power sources. Most orders ship within 2-3 weeks. Our experienced logistics team coordinates delivery to airports, maintenance facilities, and hangar locations worldwide.
Quality Assurance & Load Testing
Every air start unit in our inventory passes professional load testing and pressure calibration before sale. We document all findings and provide full transparency on equipment condition, service history, and any refurbishment performed.
Cost-Effective Used Equipment
Reconditioned air start units deliver 60-70% cost savings compared to new systems while maintaining reliability. For operations managing cash flow or expanding capacity, used equipment from Victory GSE offers excellent value without sacrificing performance.
Expert Technical Support
Our team includes technicians with hands-on experience across air start unit models and configurations. We answer compatibility questions, support installation, and provide post-sale technical guidance.
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Get Your Air Start Units Today
Contact Victory GSE to discuss your air start equipment needs. Call (323) 581-7272 or complete our quote form to receive pricing and availability on used and reconditioned air start units. Our team responds to inquiries within 24 hours and can often provide same-day quotes on in-stock equipment.
How Air Start Capacity Is Rated
Air start units are rated by mass airflow in pounds per minute (ppm). Bigger engines need more airflow to reach starter speed. Textron’s current TUG TMD line runs from 180 to 330 pounds per minute (Textron GSE, 2026). Its listed applications reach from CRJ and Boeing 737 aircraft up to the 777 and A380 (Textron GSE).
| Airflow class | Airflow in our listings | Brands in our inventory |
|---|---|---|
| Light | 120 to 170 ppm | Stewart & Stevenson |
| Medium | 180 ppm | TUG |
| Heavy | 250 ppm | TUG, Davco, Stewart & Stevenson |
When You Need an Air Start Unit
Most jets start their engines with bleed air from the APU. An air start unit replaces that supply when the APU is inoperative, deferred under the minimum equipment list, or kept off for noise or emissions rules. Remote stands and maintenance hangars rely on ASUs for the same reason.
How to Match an ASU to Your Fleet
Start with the engine manufacturer’s start requirement for airflow and pressure, then check these points:
- Airflow rating above the requirement of your largest engine.
- Hose length and duct connection for each aircraft type.
- Engine and fuel type, plus parts support at your location.
- Towing setup that fits your tractors.
The FAA’s Advisory Circular 00-34B covers safe ground servicing around parked aircraft, including engine-start support.
Buy or Lease a Used Air Start Unit
Buy an ASU when you start engines daily without APU air. Lease one to cover an APU deferral, a seasonal schedule or a new aircraft type. Victory GSE offers both. Pair it with a ground power unit for full support at the aircraft.
Air Start Unit FAQ
What does an air start unit do?
An air start unit supplies compressed air to turn an aircraft engine’s starter when the APU cannot provide bleed air. Once the first engine runs, crews can often start the others with engine bleed air.
How much airflow do I need?
Match the unit to the airflow and pressure the engine manufacturer requires for a start. Our current inventory ranges from 120 to 250 pounds per minute.
Is an air start unit the same as a ground power unit?
No. An air start unit supplies compressed air to turn the engine starters. A ground power unit supplies electrical power to aircraft systems. Many operations use both at the same aircraft.
Do you lease air start units?
Yes. Victory GSE offers used air start units for sale or lease. Call (323) 581-7272 or send a quote request.
Do you ship air start units outside Los Angeles?
Yes. Our team coordinates delivery to airports, MROs and operators across the US and worldwide.