737 oscillates in flight

[barryward12345 0]

I know this has been asked before but can't find the previous post. I am just starting to fly the 737 - I have used it a few times taking it up to only around 10,000 feet - with the purpose of practicing landings.However, I have now completed the first default Europe adventure where you fly at 27000'. I noticed that , using the autopilot, the aircraft had a pronounced up and down oscillation in flight. As I came in to land, the oscillation seemed to go away..Any ideas?Thanks Barry

[Guest Tim W]

What are your IAS and MACH settings at that altitude? Tim

[barryward12345 0]

I have tried 280 and 320 at that altitude.Strangely, the problem I experienced was when flying the first default Europe adventure (Londo to Paris) . Flying the second adventure (Paris to Milan) at the same height and speed did not produce these oscillations nearly as bad.Barry

[barryward12345 0]

PS I "feel" that it has something to do with the Autopilot. You can see the trim wheel working up and down, up and down, etcBarry

[Guest]

I've had the same thing happen, but with a side to side motion. What I did was turn off autopilot, steer away from the set heading a little and then turn autopilot on again and let it correct.Not sure if the same sort of thing would work for your case.