A real event – 737, mis handled fuel cross transfer – 120 deg roll!
Repeat with a pitch offset –
Now that surprises me. During type rating training using the 737-300 Cat D simulator, the instructor briefs there will be a 1500 kg difference between wing tanks and asks the pilot to conduct a final approach and land. This is to give the crew the experience at fuel imbalance if it should occur due to lack of attention when cross-feeding.
In our simulator there is a slight roll but easily controlled. Aileron trim is not needed. This backs up the FCTM statement that lateral control is not significantly affected when operating with fuel beyond normal balance limit and that the primary purpose of fuel balance limitations on Boeing aircraft is for structural life of the airframe and landing gear and not for controllability.