Auto Avia Design can provide Certification per CASR Part 21M for repairs and modifications in the following disciplines on any category of aircraft type.

  1. Flight analyst
  2. Structures
  3. Systems and equipment (Electrical)
  4. Systems and equipment (Instrument)
  5. Systems and equipment (Mechanical)
  6. Systems and equipment (Radio)
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Structural Analysis

Structural justification is fundamental to the certification of aircraft modifications. We use a variety of techniques for structural justification, depending on the application. These include:

  1. Classical analysis (hand calculations)
    Computational methods (finite element analysis – Ansys)
    Structural Testing
    Fatigue testing

We are skilled in the design and analysis of traditional Aluminium alloy structures, as well as more sophisticated materials and processes such as metal to metal bonding, carbon, Kevlar, and glass fibre reinforced composites.

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Flight Testing

When an aircraft modification results in a significant external protuberance (FLIR installations, geosurvey booms, pods), typically flight testing is required to investigate the effect on aircraft performance and handling. Another common flight test task is systems function evaluation and electromagnetic interference/compatibility (EMI/EMC) clearance.


Auto Avia Design performs a significant amount of flight testing for both Normal and Transport Category aircraft, ranging from single piston engine aircraft, to turboprop agricultural aircraft and transport category aircraft.

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Cost-Effective And Practical Design Solutions

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About Us

Auto Avia Design Pty Ltd is an aeronautical engineering design organisation located in Sydney. Australia Auto Avia Design has built an outstanding reputation for innovative, cost effective and timely aeronautical design solutions for a wide range of clients.

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Design Philosophy

We recognise our clients requirements for quality and economy- the team at Auto Avia Design is respected for producing cost-effective and practical design solutions. One-off modifications are our expertise- our wealth of experience means our products are delivered meeting time, budget and performance requirements.

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Auto Avia Design commenced trading in May 1989 as a sole trader consultancy and was incorporated as Auto Avia Design Pty Ltd(ABN 98 002 793 053) in July 1992.
Since 1989 the organisation has grown steadily to become one of the most active independent aviation design and certification organisations in Australia.

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