Depends on the drone...<p>The Pixhawk controller (that many of us from the RC &#x2F; tech community use) can record so much data that it can be overwhelming.<p>The commercial 3D Robotics SOLO uses an updated version of the same controller, and has such data logging enabled continuously. In fact, it -also- streams it continuously to its controller unit; even if you lose the drone there will be enough data in the controller to figure out what happened. 3DR uses that to back their flyaway warranty (if a SOLO flys away or crashes due to a software&#x2F;hardware fault vs user error, 3DR will replace the entire thing free)<p>(I&#x27;m not affiliated with 3DR other than owning a Pixhawk.)