If there really was a data transmission error, and Boeing designed in a single point of failure with no serious data integrity checking on the digital transmission (each packet with a serial number and with a CRC so none can get lost or corrupted), and no software filtering to see whether values make sense,and restore sanity, it would be literally unbelievable. (You can do that in a lab, not in a transportation machine).
Don't know about the data protocol(s), edmundronald, but can tell you that both Boeing and Airbus flight computers act on unfiltered data.
Take the incident of QF72, for example. Airbus A330, 7 October, 2008. During cruise, the angle of attack data suddenly indicated a very high value. The computer suddenly thought the plane was stalled and pushed the nose down. Passengers and Flight Attendants were thrown into the ceiling and there were several serious injuries.
There was a single spike in the data. That the readings immediately before were normal was not checked for. That the aircraft could have pitched from normal cruise AoA up to and beyond the stalling AoA instantly was not checked for. And if that wasn't amateurish enough, there was then the flight computers, thinking that a sudden pitch down whilst going at 450 knots was a good idea.