> So the GPS system didn't go down, just one sat providing SBAS and you could > have fixed it on the fly by turning off SBAS in the receiver. >
No, you couldn’t - because the cause of the GPS failure was not apparent in flight. It took Honeywell a week to work it out. And they were not dawdling. The software design was such that it wasn’t obvious on the ground, considering it carefully - let alone in flight. > You also still had the GPS is the iPad. We aren't talking about flying IFR in > gliders as it is not allowed in Australia. > > Might be an idea to get GPS of a different brand in the PC-12 so common > failures don't knock out the whole system. I had one - see previous point. We are agreeing with each other here. > > This is done in FBW control systems where microprocessors of different types > and architectures are run in parallel with firmware developed by separate > teams. > To solve a different, far more safety-critical issue, problem set. Losing flight controls is a wee bit more serious than losing one class of navigational input source - obviously. Simon _______________________________________________ Aus-soaring mailing list [email protected] http://lists.base64.com.au/listinfo/aus-soaring
