B777 response to Speedbrakes
Part of the discussion during a recent thread (B777 airspeed in turbulence) touched on concerns regarding the pitch response of the 777 resulting from speedbrake extensions and/or retractions. The nature of that discussion also pointed toward differences with and without the autopilot engaged. I assume that there would also be differences depending on the autopilot mode selected. As this topic does not fit with the title of the earlier thread, I am raising it here as its own thread. My apollogies for rehashing part of the earlier discussion, but I am very curious with regard to any undesirable response characteristics that B777 crews may be experiencing when extending or retracting the speedbrakes with or without the autopilot engaged. I am very familiar with the associated controls logic and thus interested in learning from the past so that the future is even better.
Regards,
FCEng84