Originally Posted by
sailingfun
Are you sure it sends real time. Most systems send burst transmissions at predetermined intervals. Real time transmission would get expensive.
Yes I wouldn't hold high hopes for live tech data from engines or other systems, aside from what's on the FDR or maybe what can be downloaded from any other surviving hardware.
That kind of data generally goes by SATCOM, and the onboard Sat antennas probably aren't tracking so great on the takeoff roll and climb out, they tend to work better straight and level.