Does anyone know what kind of damage is done to the TT straps by pulling pitch on shutdown, or the kind of movements imabell described, and why it isn't a factor when you pull pitch with power on?
The greater coning angle of the blades with pitch at low rpm would be one thing that comes to mind.
This is one of those things where some people say it's a no-no, others don't, so some tech info, an AD or a maintenance manual note, something along those lines would be good if anyone knows.