mtoroshanga
I was involved, and there was never any plan nor actuality of sending DAPU/ HUMS data by data link back to base. There was some trialling done of a full-flow spectrographic oil analysis system, but it was unsucessful. There was also a trial of an exhaust gas debris monitor (detecting metal swarf coming out of the engine exhaust) but again, unsucessful and in general the emphasis was on the health of the one gearbox, the two engines being less important.
500e - sorry, wrong planet. He is not the person that is responsible for the airworthiness of the aircraft - he is just responsible for driving it safely.
HC