In the wake of the tragic helicopter crash on January 26,2020 which killed Kobe Bryant and eight other people, it would seem to make sense to follow transport category aircraft standards and fit all aircraft, except ultralights, LTA unpowered, or powered parachute, with a cockpit voice recorder and a flight data and GPS telemetry recorder?
These systems aren’t that heavy - roughly 10 lbs or so - so it would represent a minimal loss in useful load compared with other standard of optional equipment. I’m guessing with a little ingenuity, such systems can be made lighter and better tailored to light aircraft. And these systems have been indispensable in accident investigations and may well greatly improve light aircraft safety. Modern AHARS systems retain some telemetry data, one of which was responsible for piecing together this stall spin accident of a Cirrus.
One downside may be the requirement to place these systems in the tail boom of an aircraft for maximum survivability in an accident, and placing even light equipment that far from the aircraft datum, can cause dramatic shifts in Moment and CG location.