JP
Welcome back.
Ark will of course speak for himself. However, if I may:
You imply that there is one alternative theory to which many of us subscribe. If that is your position, you are of course completely wrong. The BOI itself was unable to positively exclude MANY possible alternative causes of this crash. One of which was indeed a serious flight control malfunction.
Of course they had very good reason to be suspicious of the flight control system in the new Mk2 Chinooks. ZD576 had itself suffered a very serious (potentially catastrophic!) failure of a vital component of the flight control system, only a week or so prior to the accident. RAF engineers instigated a Serious Fault procedure!
In the wreckage, all similar flight control components had suffered the same failure, but of course no one is able to say whether this failure occured immediately prior to, or during the accident!
Because they didn't have a flight data, or cockpit voice recorder!
Of course the BOI where unaware of a US Chinook that completed un undemanded barrell role, whilst leaving no physical evidence of any fault! Though contaminated hydraulic fluid (similar to that in ZD576!) may have been a implicated.
Since the AAIB were unable to rule out a flight control malfunction, I assume you don't rule it out either?
With all good wishes to you too