jhurditch
The Q400 is reasonably challenging to fly accurately manually, but by no means impossible (obviously), I try to keep the raw data and hand flying skills up as much as possible.
The pitch/roll couple is not in equilibrium, i.e. it is far more sensitive in pitch than it is in roll at high dynamic pressures where there seems to be alot of roll inertia, but a fair bit of pitch inertia at low dynamic pressures (slow; vref).
The yaw couple is the bane of Q400 pilots lives
, any power change and there is a yaw change, the yaw couple is quite large and seems to vary from a/c to a/c, i.e. some are worse than others.