Originally Posted by
DaveReidUK
ICAO Annex 6 lists mandatory FDR parameters, and is well worth a read. One of those parameters is "Cockpit pitch trim control input position" (my emphasis, not ICAO's).
If BA chose to implement this by reading in pickle switches in the FCC and transmitting to DFDR by datalink and we do now now that this FCC can have computational issues in "situations" (not satisfied with the news details at all) then we are right at the point why I would like to now exactly: Which box does A/D at which rate and post processing and which uplink to FDR at which rate and possibly via which gateways in between.