Aircraft Accident Investigation Commission was created in 1974.
Transport Accident Investigation Commission was created in 1990.
Marine Accident Investigation Branch was created in 1989.
Rail Accident Investigation Branch was created in 2005.
Korea Aviation Accident Investigation Board was created in 2002.
United Nations International Independent Investigation Commission was created in 2005.
It was created by accident during the research into acrylic products for aircraft canopies.
It was originally created by accident when 3M researchers were looking at new materials for aircraft canopies.
There's no such ranking for any type of aircraft. Unless the design and usage of flying vehicles is radically changed, which is highly unlikely for several more dacades, such a ranking cannot be created. Due to the complicated design of all aircraft and the countless parameters that affect their safety, declaring an aircraft safer than another is not possible. Only unsafe features/characteristics could be attributed to a certain model and when this occurs, it is addressed with the outmost urgency and attention, mainly by the aircraft manufaturer, the accident investigation units (NTSB, etc. if an accident/incident occured) and the regulators (FAA, EASA etc.).
Cancer Investigation was created in 1983.
Investigation of a Flame was created in 2001.
A Philosophical Investigation was created in 1992.
Clarendon Commission was created in 1861.