Able to perform multiple turbine or piston engine starts, this START PAC® unit will allow your turbine engines to experience faster and cooler engine starts than with most ship’s aircraft batteries (the turbine is spooled to more revolutions per second before fuel is injected). Thus, turbine life will be extended because there is less stress on the starter and other engine components. This will preserve the aircraft’s costly batteries and help lower operating costs. When using your START PAC®’s integrated power supply, you save the on-board battery for emergency use only. As a START PAC® secures all your engine starts, this unit will ensure that you have no downtime.

The environmentally responsible, low VOC powder coating protects the case from wear, tear and poor weather conditions. Additionally, an all-weather cover accessory is also available as an option for this unit in order to protect it further from inclement weather to gain the maximum performance and product life.

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Built for Business Aircraft Starting and Continuous Maintenance Power

The Model 3328QC™ – 400A is engineered for operators who need both heavy-duty engine starting and sustained maintenance power on the ramp or in the hangar. With 2,800 peak amps for cold starts and 400 amps of clean, continuous 28.5 VDC output, it is built to handle the demands of business jets, turboprops, and twin-engine helicopters during ground operations.

The combination of high battery capacity and full-time AC-powered output means the unit can support multiple back-to-back starts, run high-draw cockpit systems including onboard air conditioning, and power extended maintenance, training, or software-update sessions without depleting the aircraft’s onboard batteries.

Key Benefits of the START PAC® Model 3328QC™ / 400 AMP

The START PAC® Model 3328QC™ – 400A combines starting performance, continuous high-output power, and the patented Quick Change battery system into a single ground support unit built for business aviation.

Benefits include:

• 2,800 peak starting amps for reliable turbine and piston engine starts
• 400 amps of continuous 28.5 VDC output for full cockpit and AC operation
• Patented Quick Change battery design — swap batteries in under one minute without tools or downtime
• 56 Ah lead-acid battery pack for use even when AC power is unavailable
• 220 VAC single-phase input with built-in charger (1 to 8-hour recharge)
• Over-current, over-voltage, and over-temperature protection
• Low-VOC powder-coated case for outdoor and ramp environments
• Meets the requirements of 98% of business aircraft

This combination makes the unit a practical choice for FBOs, MROs, flight departments, and aircraft owners running larger turbine aircraft that need dependable starting power and high-amperage maintenance support in one mobile system.

FAQ

When do you need a 400-amp aircraft ground power unit?

A 400-amp aircraft ground power unit is used when higher current output is required for engine starting and powering high-demand aircraft systems.

What does a 28V aircraft power supply provide?

A 28V aircraft power supply delivers regulated DC voltage required to operate aircraft systems safely during maintenance and service operations.

Can a high-amp GPU support both maintenance and starting?

Yes, high-capacity units like a 400 amp aircraft GPU are designed to support both continuous power needs and engine starting operations.

What type of aircraft requires a 400 amp GPU?

Aircraft with higher electrical demand, including turbine and business aircraft, often require a high-capacity aircraft power supply for reliable operation.