Outfitting Your Corporate Hangar: Essential HPU Options
Key Takeaways
- Corporate aircraft hangars require HPU options that go beyond standard configuration – protecting polished floors, maintaining fluid cleanliness, and supporting high-value aircraft servicing are all primary considerations.
- Monitoring accessories, including hourmeters, pyrometers, electric filter clogged indicators, overtemperature shutoff sensors, and voltage monitors, improve situational awareness, extend equipment life, and reduce the risk of service interruptions.
- A drip pan is essential in corporate hangar environments – it catches stray hydraulic fluid before it reaches the floor, protecting polished surfaces and maintaining the facility's professional appearance.
- Extended hoses (25-ft and 50-ft) and extended input cables (50-ft and 100-ft) improve positioning flexibility in large or unconventional hangar layouts, reducing the need to reposition the HPU during servicing.
- Run-around coupling kits allow hydraulic fluid to circulate through the HPU's internal filters in a closed loop before entering the aircraft – conditioning the fluid and reducing contamination risk. Hydraulic coupling kits, aircraft-specific and sold separately, are required to complete these connections.
- Tronair HPUs are configurable via a wide option matrix, and PJi's specialists can help match the right base unit and accessories to your specific aircraft type, hangar layout, and power availability.
Corporate aircraft hangars are more than just functional storage spaces – they’re high-end facilities designed to reflect the quality and value of the aircraft they house. With polished floors, advanced climate control, and strict cleanliness standards, these hangars prioritize both appearance and performance.
That’s why the hydraulic power unit (HPU) you use for aircraft maintenance in these environments must be carefully chosen and properly equipped. In this post, we’ll explore the most important HPU options and accessories to consider when outfitting your corporate hangar to protect your aircraft – and your facility.
What Are Hydraulic Power Units Used for in Aircraft Maintenance?
Hydraulic power units deliver pressurized hydraulic fluid for testing and servicing aircraft hydraulic systems on the ground. In aviation maintenance, they power critical systems such as landing gear, flight controls, brakes, and thrust reversers.
HPUs allow aircraft maintenance technicians to perform function checks and fluid transfers without running the aircraft's engines or auxiliary power unit (APU). This reduces fuel use, wear on the aircraft systems, and unnecessary environmental exposure inside the hangar, making them essential tools for performing safe, efficient maintenance on corporate jets and other aircraft.
What Are the Main Components of a Hydraulic Power Unit?
Every aircraft hydraulic power unit includes several core components, such as a fluid reservoir, an electric motor, a hydraulic pump, a filtration system, pressure control valves, hoses, and input cables. These elements work together to deliver the correct flow rate and pressure of hydraulic fluid to the aircraft’s hydraulic systems.
Depending on their intended application, some models may also include built-in features like cooling systems or hand pumps. The configuration varies based on the unit's size, capacity, and model. Tronair HPUs are designed with flexible configurations to support the diverse needs of corporate aircraft maintenance operations.
What HPU Options Are Recommended for Corporate Aircraft Hangars?
To maintain the pristine conditions of corporate hangars and protect high-value aircraft, several HPU accessories and upgrades are highly recommended. These options improve functionality, reduce fluid contamination, and prevent damage to expensive hangar flooring. Here are some key upgrades and accessories to consider:
Hourmeter
An hourmeter tracks total HPU runtime, helping aircraft maintenance technicians schedule routine service intervals and monitor usage. While some Tronair models include an hourmeter as a standard feature, others may require it as an upgrade (Option E for 50 Hz or Option F for 60 Hz). Having one installed ensures more accurate maintenance tracking, which can extend the life of your equipment and improve hangar efficiency.
Pyrometer
Also referred to as a temperature gauge, the pyrometer monitors hydraulic fluid temperature to help prevent system overheating. This is especially useful during extended run times or when servicing hydraulic systems with tight tolerances. Some Tronair HPUs may come standard with a pyrometer, while others offer it as an optional feature (Option K). Adding one ensures greater control and situational awareness during aircraft servicing.
Electric Filter Clogged Indicator
This sensor alerts aircraft maintenance technicians when the hydraulic filter becomes obstructed by contamination. Early detection helps prevent pressure drops, ensures consistent fluid flow, and supports optimal hydraulic system performance. On certain Tronair models, this indicator may come pre-installed, but it is also offered as an optional feature (Option R) on other units. Including one can reduce the risk of service interruptions and prevent unnecessary wear on the aircraft and ground equipment alike.
Overtemperature Shutoff Sensor
The overtemperature shutoff sensor automatically shuts down the HPU if internal temperatures exceed safe operating limits. This protects vital components from heat-related damage, extending the lifespan of your equipment and reducing repair costs. It’s an especially valuable feature for hangars in warm climates or when the unit is run for extended periods. Available as an optional feature (Option S) on some models and standard on others, this safety measure adds peace of mind during prolonged aircraft maintenance procedures.
Voltage Monitor
A voltage monitor detects and reports electrical irregularities that could compromise the HPU's performance or cause power-related malfunctions. This is especially valuable in older hangars or facilities with fluctuating voltage sources. While some Tronair units come equipped with a built-in voltage monitor, others offer it as an optional upgrade (Options G through J, based on the specific voltage requirement). Including a voltage monitor helps protect both your equipment and your aircraft’s sensitive onboard systems.
Drip Pan
A drip pan serves as a protective barrier between your HPU and the hangar floor, catching stray hydraulic fluid and preventing staining or damage to polished surfaces. This is especially important in corporate aircraft hangars, where aesthetics and cleanliness are a top priority. While some HPU models include a built-in drip containment system, many require it to be added as a standalone component (Option 4). Tronair strongly recommends a drip pan to preserve the integrity of your hangar flooring and help maintain a professional environment.
Towing/Trailer Package
Tronair’s towing/trailer package enables quick and secure movement of your HPU across the hangar or to outdoor service areas. It includes heavy-duty wheels and a towbar that minimizes manual handling and the risk of collisions or tipping. For larger or heavier HPU models, Tronair recommends adding the towing package (Option N) to streamline operations and reduce technician workload. It's a must-have upgrade for maintenance teams that regularly reposition their equipment.
Extended-Length Hoses
Available in 25-foot and 50-foot configurations (Options A/AA and B/BB, respectively), extended-length hoses offer greater flexibility when positioning the HPU around the aircraft. These are particularly useful in large or busy hangars where space may be limited or when aircraft are serviced in place. Tronair offers both standard and split-system hose options to accommodate different setups. Whether you're working with a single jet or servicing multiple aircraft, longer hoses reduce the need to reposition the HPU, improving efficiency and minimizing trip hazards.
Extended-Length Input Cables
Extended input cables – available in 50-foot and 100-foot lengths – allow you to operate the HPU even when power sources are located far from the aircraft. This is especially helpful in spacious or unconventional hangar layouts where standard cable lengths may fall short. Depending on the model, these cables may be offered as options (EL-50, EL-100 series) for greater customization. Adding extended input cables helps reduce downtime and provides more freedom in how and where your HPU is deployed.
Run-Around Coupling Kits
Run-around coupling kits, also known as self-cleaning circulation kits, are essential tools for maintaining hydraulic fluid cleanliness during aircraft maintenance. By connecting the HPU’s pressure and return hoses in a closed loop, these kits allow fluid to circulate through the unit’s internal filters without ever entering the aircraft’s system. This process helps condition the fluid in advance, reducing the risk of contamination and protecting both the aircraft and the hydraulic power unit from wear and damage.
In corporate aircraft hangars, where system integrity and operational safety are top priorities, run-around kits offer an added layer of assurance. These kits are sold separately and may not be available for all aircraft models, so be sure to check compatibility in advance.
Hydraulic Coupling Kits
When using a run-around kit, a hydraulic coupling kit is required to ensure secure and leak-free connections between the HPU and your aircraft’s bulkhead fittings. These couplers are engineered for a precise fit and safe operation under pressure. Sold separately from the HPU, each coupling kit is aircraft-specific and must match your platform’s hydraulic system. Tronair offers a full selection of compatible couplers to support clean, efficient maintenance practices.
Laser Contamination Monitors
Laser contamination monitors, also known as hydraulic fluid contamination monitors, are standalone units that measure and monitor the cleanliness of aircraft hydraulic fluids in real time. These devices help aviation maintenance professionals identify the presence and severity of particulate contamination, which is essential for ensuring system reliability and safety.
While not an HPU accessory per se, these units are highly recommended for operators managing fleets of corporate jets or high-utilization aircraft. Investing in a contamination monitor supports proactive maintenance and can extend the service life of both hydraulic power units and aircraft hydraulic systems.
What Makes Tronair HPUs Superior to Other Brands?
Tronair hydraulic power units are trusted across the aviation industry for their durability, configurability, and performance. Designed specifically for aircraft maintenance environments, they feature modular options that can be tailored to each operator's needs.
From hand pumps and pyrometers to electric filters and voltage monitors, Tronair’s HPUs can be precisely configured using a wide option matrix. In addition, Tronair offers model-specific accessories, such as drip pans, trailer packages, and extended hoses, that meet the needs of corporate aircraft maintenance technicians.
What Should You Look for When Customizing an HPU for a Corporate Hangar?
When customizing an HPU for your aircraft hangar, consider your aircraft type, power availability, and operating environment. In corporate hangars, drip control and fluid cleanliness are especially important, so accessories like drip pans and run-around kits are essential. For greater mobility and flexibility, towing packages and extended hoses or input cables are practical upgrades. Always verify the compatibility of hydraulic couplings and quick-disconnect fittings with your specific aircraft. Working with an experienced provider like Pilot John International® (PJi®) ensures you get a solution that’s both functional and tailored to your hangar setup.
The Bottom Line
Corporate aircraft hangars demand tools that match the sophistication and quality of the aircraft they protect. Equipping your Tronair HPU with the right accessories – like drip pans, pyrometers, filter indicators, and run-around kits – can help preserve your hangar’s pristine condition while ensuring high-performance maintenance.
PJi is your trusted source for premium hydraulic power units from Tronair, a leading manufacturer of aviation ground support equipment (GSE). Our team of knowledgeable aviation specialists is ready to help you select and customize your HPU with the best options for your aircraft and hangar environment. Contact us today by phone, email, or live chat!
