Whenever I fly the A320 or 319/321, I always have an issue when I press APP and have finished configuring for landing. The aircraft seems to pitch up then and down (not rapidly but gradually like a see saw) regardless of speed. I do not have this with any other aircraft and is very annoying. Is this an A320 flight model issue?? I barely fully auto land I disengage autopilot at 1000 feet, but when in approach mode prior to this it is frustrating with this issue.
I ensured there was enough speed and have messed about with trim and that does not do anything.
For me this happens to all aircraft, but I found a solution, is comes down to stabilization, pitch controls speed and throttle controls altitude. Manually use throttle and flaps to decrease speed slowly, a power assisted decent is the way forwards
When I am descending on APP mode and bringing flaps out to 1-3 its fine but when its flaps full and final approach config that’s when it starts. When it intercepts LOC and GS then starts descent etc it is fine.