SLAT Motor Control

The SLATs are part of the Secondary Flight Control System. They are extended from the leading edge of the wings during take-off and landing to provide additional lift.

The power electronics hardware development is governed by the strict guidelines of RTCA DO-254. Meeting the customer's requirements regarding weight and performance was a major challenge.

In addition to the SLAT MCE unit, Silver Atena also developed the necessary HIL test systems and test benches.


  • Used for the electric operation of the leading edge wing flaps (SLATs) of the Airbus A350 XWB
  • The SLAT MCE controls the electric motor of the SLAT Drive and the electrical power off brake
  • Hardware developed according to civil aviation standard RTCA DO-254, Design Assurance Level (DAL) B
  • Qualified for environmental conditions according to civil aviation standard RTCA DO-160 and Airbus directives


  • Electrical Power Processors: Power supply from aircraft network (3 x 230 VAC, variable frequency)
  • Total power: 25 kW
  • Enclosure: Hermetically sealed chassis with passive cooling
  • Temperature Range: -55 °C ... +95 °C (operating)
  • Interfaces: ARINC 429, CAN, RS-232, resolver, 3-phase high voltage motor output Solenoid output


  • Developed by customer
  • Flight Control Systems
  • Auxiliary units
  • Applications using electric drives as replacement of mechanical / hydraulic systems


Dachauer Strasse 655
80995 Munich, Germany
+49 89 189600 - 0

We offer comprehensive solutions as development partner and supplier for prototypes and small series in the area of safety-critical systems and power electronics.