Having been the Wing Flight Safety Officer (WFSO) for a short time, I was amazed at the speed the investigation team said that no mechanical failure caused the crash. I seriously doubt, as a person who has both the Basic Flight Safety Course and Advanced Course, an aerospace eng degree, etc., that mech failure can be ruled out so quickly. All modern helos have a FDR or CVR or a combo, such as in the Griffon. Also, not knowing what the Cormorant has in it exactly, another system that could be useful is the Health Usage Monitoring System (HUMS) or whatever it may be called in the Cormorant (assuming it has one). The HUMS was very useful in the Griffon crash in Goose Bay where the two pilots passed away (RIP my friends).
Having survivors, especially the pilots, will provide a wealth of info to DFS (Directorate of Flight Safety), who is responsible for investigating mil aircraft crashes. By the way, I personally know one of the pilots on board (I'm not sure if he was flying as there were 3 onboard), and I can say without a doubt that he is a very experienced pilot. He was relatively new on the Cormorant, but I would have flown with him anytime while I was at 427 Sqn.
Another point, a tail rotor assembly should not have to be replaced every 100 hrs. This is extremely costly in terms of manhours, aircraft downtime, aircraft availability, etc. If this is true that the Cormorant has to have its tail rotor assembly replaced every 100 hrs, then Augusta-Westland (AW) should be taken out back and taught a lesson on aircraft design. Last year, some tail rotors had to be replaced after only two hours, and Augusta-Westland personnel didn't even get past the CAS while briefing him on the status of the solution to the tail rotor problem. The 1 Cdn Air Div Commander was expecting the AW team, but didn't obviously get to meet them. This came straight from the General to our FS course. I hope that Augusta-Westland did make changes, as has been detailed in some news reports.
We all need to give DFS time to do a proper investigation. Patience is a true virtue here and we may not know the cause (cause factor for us FS folks) for a year. The thing about FS is that there are always other factors that led up to the crash and DFS will look at all of this so that we can do the aim of FS:
"To prevent the accidental loss of aviation resources".
My thoughts and prayers go out to the families of our downed airmen.