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Not a Collective in the 47D, it’s called Thrust.


Not a Collective in the 47D, it’s called Thrust.  

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Author: Load 83   Date: 8/14/2022 6:39:37 AM  +16/-1   Show Orig. Msg (this window) Or  In New Window

To me, looks like one of the AFT Blades lost pitch (pitch change link), perhaps control failure (not drive) to the AFT Head.  AFT Head on it's own without control input (not drive) hench the spin. 
 
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Idaho CH-47 Crash Video +6/-3 Gomer From Homer 8/13/2022 10:58:48 AM