Air Canada 859 return to LHR 22 Jan 2011
I was on the 6:25p.m. A.C. 859 767 flight on the 22nd January.
We took off normally but after about 10 minutes, the aircraft started a very violent yawing motion to the left and right. This went on for quite some time until the crew were able to slow it down and eventually stop the yawing.
The Captain then came on and said that we were returning to LHR.
As luck would have it, the aircraft had few passengers so he came straight in and banged it down.
Obviously its too early to know what happened but my impression when it was happening was a problem with the rudder actuators (do 767's have them) - clearly the rudder was not under full control throughout this episode.