Lu,. .I can see your point. I understand there were a large number of passengers in the Chinook at the time, and as such, its ramifications were far wider than a "routine" military investigation. I know very little about it, so I won't make a comment on the circumstances.
In Australia, May or June 1996, two Blackhwaks of the Australian Army collided in Townsville on a NVG training sortie unfortunately killing a large number of Aircrew and SAS. The same type of situation appeared, where aircrew were copping the brunt of the blame, however over the course of the Inquiry held by the Army, other mitigating factors such as aircrew attrition rates and training hours etc were highlighted.
The families obviously were in the same situation as the RAF families. What did come out of the Inquiry was the incredible bravery of the aircrew and the SAS personnel.
Perhaps some of our Army colleagues would be able to expand on that and any similarities with the Chinook outcome.