ARPs...
Pilot error may be the initial blame... but at the core of this is MANAGEMENT ERROR!!
Good response!
However, if you are referring to the Mendi 'event', were the passengers and crew onboard the aircraft when it was torched? Because if not then I don't think it can be considered an accident under the definition of accident in ICAO Annex 13:
Accident. An occurrence associated with the operation of an aircraft which, in the case of a manned aircraft, takes place between the time any person boards the aircraft with the intention of flight until such time as all such persons have disembarked...
So let's all agree to disagree about the Mendi 'event' and concentrate on the recent 737
accident.