The AAIB final report into the crash of Super Puma helicopter G-REDL in the North Sea off Peterhead has been published
here.
One of the conclusions reads..........
36. The use of verbal and email communication between the operator and manufacturer on 25 March 2009 led to a misunderstanding or miscommunication of the issue.
A misunderstanding which resulted in 16 fatalities.

Sooty
One Olympus 301 has twice the power of a complete F1 starting grid.
XM655 has four of them, all serviceable.
When we make noise, WE MAKE NOIZE ! !