Boeing Osprey crashes off Darwin 27/08/23.

[facthunter]

I Do think its a relevant comparison. Double declutching is not possible or applicable when one is stopped or running at vastly different revs.  If you stopped the other motor  you could engage it but that's not available.  Nev

[Thruster88]

Each engine would most likely drive the gearbox system through a sprag type clutch. Engines can drive but not be driven in the event of failure.

[Old Koreelah]

I believe the Chinook has a similar arrangement.

[facthunter]

It's certainly something else to go wrong. Nev