Hmmmm
"Sorry it Shell Aircraft, not the helicopter industry, that invented HUMS and every other major helicopter safety improvement"
My previous comment was perhaps a little provocative I grant you! However, I'm close enough to this to know which organization did what in the development of HUMS in the late 80's and throughout the 90's and equally I know who's doing what today in terms of systems like TCAS2. Indeed, Shell does get behind these developments and funds a lot of the work. Noting however that Shell has no Design approval for these types, the use of the word "invented" is perhaps a little strong and any suggestion that you did this all on your own is pure fiction isn't it now?