JIHLAVAN has at its disposal top-class technical facilities and highly qualified specialists. The know-how represented by our employees and the system, as well as the process and customer certifications we have acquired, help us to offer a full spectrum of activities and services. Development, production, assembly, final testing and servicing are performed for a vast range of aircraft hydraulic and electromechanical devices.
In the development and manufacture of aircraft hydraulic units, we are the only company of our kind in Central Europe with such equipment and competencies.



We have design know-how in the following areas:

  • Hydraulic devices for undercarriages
  • Hydraulic devices for flight control
  • Hydraulic devices for brakes
  • Hydropneumatic dampers
  • Electromechanical flight control trim EMA
  • Brakes
  • Wheels


  • Refurbishing existing devices
  • Design of new devices
  • Creation of 3D models
  • Calculations in MKP Nastran
  • Design work is executed using Catia V5-6R2014 and NX3 (Unigraphics) software
  • Capability category development


Jihlavan has the technology and skill to conduct tests of civil and military aviation hydraulic (pneumatic) devices, and hydraulic devices for general use.


  • Endurance tests of the complete hydraulic system
  • Endurance tests of devices under pressures of up to 32 MPa and a supply of hydraulic fluid up to 80 l/min
  • Tests under decreased temperature up to –60 °C
  • Tests under increased temperature up to +120 °C
  • Tests under decreased atmospheric pressure up to 100 mbar
  • Tests with saline mist
  • Strength tests by hydraulic fluid with static pressure up to 100 MPa
  • Vibration tests – sinusoidal vibrations, random vibrations on a 4-kW vibrator (5 to 4 500 Hz, max 94 g)
  • Impact test – multiple, single impacts (17 to 180 impacts/min, impact duration 0.5 to 10 ms, max. 20 kg)
  • Functional tests of hydraulic aircraft units (devices) by HyJet IV – A Plus fluid under pressure up to 33 MPa (static pressure up to 50 MPa) and supply of hydraulic fluid up to 65 l/min


In the past, Jihlavan has participated in significant projects related to the development of hydraulic devices and systems for the L-29, L-39 and L-159 aircraft in military aviation, and the L-410, L-610, Ae-270 and EV-55 in civil aviation.


The project was supported by the Czech Ministry of Industry and Trade, which influenced the commercial and marketing parameters of the aircraft. The Evektor engineering office has become the final aircraft OEM of the project. It does not have any mass manufacturing capacities.

At the end of the 1990s, Jihlavan was selected by Aero Vodochody final aircraft OEM as a supplier of most of the hydraulic power devices for the light combat L159 ALCA aircraft. The project was commercially supported by an order of 72 aircraft, placed by the Czech Ministry of Defence.

Jihlavan has been a development partner in the Technometra group since the end of the 1960s for most power hydraulic devices of this aircraft

For the first generation of aircraft, Jihlavan has been

a development partner for all hydraulic power devices within the Technometra group since the end of the 1960s. Today, Jihlavan continues to provide service and spare parts for a fleet comprising approx. 700 aircraft.


The development of L39NG projects is currently under way. The L410NG project has been successfully completed.


Jihlavan is building on the successfully implemented L410 project with its development of components for New Generation aircraft. We have developed 12 devices for the undercarriage of the L410 NG aircraft in a modern stainless-steel design, as well as power-assisted steering of the nose undercarriage, and flight control trim EMA for flaps and ailerons. Jihlavan is developing a total of 15 devices for this particular aircraft.

Follow-up development is also being undertaken for the New Generation of L39 aircraft. This comprehensive task includes designing 42 devices.