If there is any doubt
Under Freedom of Information I requested the Technical Assessor Worksheet. This is the CASA checklist from their own files. Over 600 individual items were each assessed and "ticked off" by CASA in order for APTA to get its Part 141 and 142 Approval. These were CASA stipulated requirements for my business if it was to continue operating after September 2017.
There is no doubt CASA were integral in the design. It cannot be refuted.