Aircraft Design & Certification
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Nothing is more powerful than
an idea whose time has come.
Victor Hugo
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Your dreams deserve to come true.


Fascination for air and aviation, for man and machine, for creativity and complexity – this is the fuel that drives us.
Our core competence: we take responsibility for your aircraft, from design to certification.
What we get started will get airborne.

Click here for past projects Find out who is behind it!



You want it to fly and to be fast? Is your project in need of a precise process?

With our wide experience in aviation and the use of state-of-the-art design methods, we can offer you an extensive range of design services.

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Is your aircraft in need of a modification? Is your aircraft not yet certified at all?

Being an EASA approved Design Organisation, we have been leading certification efforts for airplanes, airplane parts and propellers, since 2005. Our vision: "a certification factory".

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Load Assumptions

Aircraft Load

The safety and stability of an airplane is evaluated by structural tests and analysis.

Based on analytically verifiable methods, we produce loads from aerodynamics to single components – for any configuration – always keeping in mind certification.

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Cabin Interior

Galleys, lavatory, stowages and overhead compartments. All cabin interior need structural substantiation, deflection analysis and interface load verification.

AD&C supports the design and verification of cabin structural elements and their integration for several customers and operators/airlines.

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Type Certification

The Lightwing AC4 is the first EASA certified CS-LSA airplane with a Rotax 912iS engine. Low fuel consumption, light weight and low noise as well as comfortable seating; sufficient payload, and modern avionics - it is an airplane you will like to fly just for fun or enroute.

The Swiss production organisation, Lightwing AG (POA), delivers highest quality and uses mainly local suppliers.

If you are a user/operator of an AC4 and you want to report an occurance, please use our contact form with the subject "Lightwing AC4 Occurance".


  • Two seater side-by-side
  • high wing configuration
  • MTOW 600 kg, payload 240 kg
  • 100 hp fuel injection Rotax 912 iS
Stall speed FLAP DWN   VS0   76 km/h
Stall speed Clean  VS1  81 km/h
Flap Speed  VF 152 km/h
Manoeuvring Speed  VA 163 km/h
Cruise Speed  VC 163 km/h
Never Exceed Speed  VNE 196 km/h


  • Consumption 14l/h
  • Covering on wing and empennage
  • Carbon fuselage fairing and wheel shoes
  • Carbon fuel tank (100 liter)
  • Carbon body-contoured seat
  • Dynon Skyview
  • Becker radio und transponder
  • Stork Flight digital EMU 912iS


If you are interested or you have any question about this product please use the contact form with the subject "Lightwing AC4". 

Pictures Lightwing AC4

Products - Change and Repair

  • Extra 300

    towing weight
    up to 1000 kg
    Extra 300
  • Blanik L13

    up to 5000 operate hours
    excluding aerobatic
    Blanik L13
  • Ventus cM

    steerable tail wheel
    Ventus cM

  • Jodel DR1050

    shoulder harness
    Jodel DR1050
  • D4 Fascination

    D4 Fascination

From Concept

to Certification.

Contact us!