Given the modest amount of damage to the aircraft, and that there were no injuries, the basic cause of this surely has to be known by now. Particularly for those of us that fly 109s, the most important thing is having this info asap so at least we/maintenance can know if there is anything that needs extra attention. Thankfully mechanical failures are very rare, but, if it was one, this could easily have had been an accident of as much tragedy and sensation as the Leicester 169.