However, there is no direct mechanical linkage, so in the event of a dual FADEC channel failure, the engine shuts down, and in the event of a fixed power failure, you have no control of the engine.
The slogan could be: "Sikorsky, a different way of thinking"
Interesting read, like when I learned in this forum about the fuel system without fuel pumps to prevent leaks if the line breaks, only engine driven pump.
I'd like to hear the reason behind the no mechanical linkage, to be able to control one engine in "manual" mode.
Anyway I remember once in the 139, during the test we found the backup cable jammed.
Regards.
Aser