Hi barit1
By proprietary I do mean 'ownership', but not of processes or formulas.
I address ownership of the investigation. It should be the property, in its entirety, of the people, all of them, who have an interest in commercial flight.
Not the owners of the equipment, or the operators, or even the regulatory entity. Everybody.
You are comfortable with GE and FAA. OK by me. Those of us who remember pencil whipped inspections 737 skin, avoidance of AD 447 pitot, and other forms of deceit, what do we do? Were the Thales AA even certified properly?
Some one should care...