Darn... it gets worse with wear and tear. As the oldest Q400 I fly is barely 4 years old, aileron trim doesn't get much use. However, rudder trim is constantly tweaked and switch gets quickly worn. On ATR-42-300, we would fine tune the ball in the middle using rudder trim in cruise on the first flight in the morning and than forget about either rudder or aileron trim for the rest of the day.
So it is type, series and individual airframe specific.
Originally Posted by 1jz
FLYING IS A SCIENCE N TRIMMING IS AN ART.
Typing all caps and using textspeak is neither.