X767
In your case that cause is to promulgate that it was pilot error - with no knowledge of the true circumstances.
Yup,again. I feel that Pilot error, a minor sin with occasionally grave consequences, is a far far better outcome than "Gross negligence", and I think it is probably obtainable from those on high who appear to have no reverse gear.
Thats all, D.
PS My 6127 is relevant as to the evidence gathering.