I've been following the ALH Dhruv helicopter crashes for a while now. I've noticed there has always been a pattern of denial by HAL.The investigations are also shrouded in mystery. There was an air crash near Ranchi on 19 October 2011. Though it opened up an enquiry from DGCA, the AFCS data was apparently missing. Is this a cover up?
ALH Dhruv problems: Helicopter crashes HAL wants you to forget | George Kottakal
I've put up some of the information here. If there is any ALH Dhruv pilot out there who can give me clarity on the subject do reach out to me. Even if you have a basic understanding of helicopter crash reports do let me know. The links for the report is given in the article.
Thanks and Regards