XINHUA2
Binghi, The real shock is the unsubsidised capital cost and ongoing calibration cost annually.
And what massive impost would that be? Your TSO146 GPS is pretty maintenance free, the ADSB/Mode C transponder is pretty much the same. Your altitude encoder is a biannual event for GA so what is new there?
Correct me if I am wrong but what has changed for most of GA? Nothing!!!
J