CAD & Aviation

Software development Services and CAD AddIns News: CAD Geodessy Assistant Now shipping

Products: API's, Apps and CAD AddIns


FPAssistant Suite SDK

This aviation based SDK is available to license as a software component for your own software development projects giving a great head start and the knowledge that the underlying software has been comprehensively tested; this covers the full set of aviation business objects

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FPAssistant App (Windows 10)

FPAssistant is an accompaniment and assistant to your aviation and flight procedure design work covering both the ICAO PANS-OPS and FAA TERPS design criteria's; this app is best used in conjunction with any existing procedure design software product you already have to concur calculations and any analysis that might have been derived.

Free Download

CAD Geodesy Assistant

The is a plugin to CAD software that extends specifically the geodetic capabilities, a simple dialog based interface allows calculations such as geodetic Distances, Intersections and Great Circle Lines. Available for Autodesk AutoCAD and Bricsys BricsCAD.

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Software Development Consultancy

CADology offers the services of our highly qualified software development team to customers and companies who perhaps want a little more resource on a short term basis, this maybe to boost a delivery time or perhaps get you started or even project manage. The area of expertise covers a wide range of technical skills both in hardware and software technologies

  • Languages: C, C++, C#, Fortran, Java, JavaScript
  • Development Tools: Visual Studio, Visual Studio Code
  • Frameworks: .NET, .NET Core
  • UI: WinForms, WPF, UWP
  • DevOps: Microsoft Azure DevOps / Agile methodology
  • CAD: Autodesk AutoCAD, Bentley MicroStation, BricsCAD
  • Aviation: FAA and ICAO criteria, knowledge of FPAssistant Suite SDK


CADology has developed the FPAssistant Suite SDK which is a .NET library for aviation business objects and with this knowledge CADology can offer consultancy to assist with your aviation software development

  • ICAO: Doc.8168 PANS-OPS, Aerodrome Surfaces (Annex 14), Doc 9905
  • FAA: TERPS Criteria, Part 77 Surfaces
  • AIXM: 4.5 and 5.x
  • ARINC 424: Parser for software developers
  • FAS Data Block: Encoder to produce the binary data file



CADology, based in the United Kingdom, has been offering CAD software tools and software development consultancy since 1988 for AutoCAD and MicroStation. It was started by Dawson Bunn who still heads the company today.

CADology was one of the first companies to join the Autodesk Registered Developer scheme back in 1988 and as Autodesk changed over the years, CADology is currently a Autodesk Developer Network (ADN) partner in the Autodesk Virtual Corporation.

CAD Consultancy has also been a key area for CADology, not only for the Autodesk products but also services have been provided in the Intergraph (IGDS) and MicroStation field covering installations, software development and training.

Over the years CAD software has been developed using the development environments of AutoCAD and MicroStation covering AutoLISP, ADS, UCM, MDL, ObjectARX and now mostly using the .NET framework with clients abroad to those here in the UK. Since the launch of AutoCAD 2000, the use of the Object Model has been used to develop and train customers.

The CADology developers tend to use Microsoft Visual Studio to write C# and C++ using the .NET environment. This allows to target a wide range of OS's running on Desktops, Tablets and Mobile devices. Source code is stored within Azure DevOps to enabled a structured development with CI and CD with Pipelines and Aritfacts.