One big concern for me is the accusation that the pilot and Co pilot were threatened by a member of the SI during the investigation. This accusation has been made by both the defendant and the co pilot while he was a prosecution witness.
If this is true, it puts the SI at risk and therefore any evidence from it used during the SI at risk.
This could potentially mean the outcome of the CM be an injustice and/or be open to an appeal process from either side depending on outcome.