I just wanted to give some answers to questions in this thread.
* All data from flight #7K9268 were picked up by FR24 receivers, which means receivers that are equipped with a GPS to get correct timing.
* FR24 is saving ALL received data in all FR24 receivers for last 4-8 hours (the full data volume is too big to be stream in real time) and in case it's needed the data is download from the receiver manually. In this case the raw data has been downloaded from 3 receivers that were picking up data last 30 seconds. Except for autopilot-data, none of this data has been published yet but confirms the data that has been published. In this data IAS and TAS are probably available but needs to be verified before it's released.
* There has been some confusion about the vspeed data. For MLAT flights vspeed data is calculated on FR24 side. For ADS-B flights vspeed data comes from the transponder. In this case the vspeed data is fluctuating too much to be correct, but it shows that something very dynamic was happening with the flight last seconds. The same fluctuations are visible when looking on data from each individual receiver one by one.