After a few weeks delay, the EDM 830 (Engine Data Management 830), the last piece of the A2A Comanche PA24-250 FIP gauge set has completed at last.

The gauge is by far the most complicated FIP instrument I ever developed. It has over 3,600 programming lines with many intricated conditions, which I probably wouldn’t remember of what they are in a few months.

Yet, this FIP version is not a full replica to the one on the A2A aircraft.  

In addition to differences in horizontal and vertical layouts, some features of the EDM 830 on the A2A aircraft are simply unable to implement onto FIPs due to hardware and software limitations.  In some cases, I gotta use unconventional approaches to achieve what it presents.

Nevertheless, Continue reading →