EASA requires a Flight Data Monitoring Program which is typically by data collected by the FDAU or DFDR and analyzed months later.
It seems the basic flight parameters like indicated speed vs TAS vs Mach and speed compliance below 10,000' (USA), climb profiles or stabilized approach criteria could easily be monitored by ADS-B by an operator saving a tail number's data realtime in a local database and process later via scripts.
Would this be possible?