Narrative:

We were at FL340 on the track behind two other aircraft; one at the same altitude; and one at FL360. We started to pick up moderate wake; bordering on severe. I immediately offset one mile to the right; we were still experiencing the wake. I offset one more mile to the right and we started picking up the wake from the aircraft in front and above. Fearing that we would have injuries in the back; I decided to go one more mile to the right. After we offset three miles right; the wake turbulence stopped. I was going to advise ATC of our actions; but before I did that I wanted to assess the situation in the back of the airplane. While in the process of contacting the flight attendants we received a selcal from shanwick and they said ATC was showing us three miles to the right of course. I told them to advise ATC of our wake turbulence encounter; and to let them know that we needed to stay three miles to the right of course until 4729N; where the course changed; and the wind direction would keep us away from the wake from the aircraft in front and above. The shanwick controller said that he was going to contact ATC; and let us know. After a few minutes; he came back and said that ATC said we only had three options; and the options were on track; one-mile right; or two. We changed our path to two miles right of course and started experiencing occasional moderate wake turbulence. We continued in the wake until 4729N. I think sometimes ATC forgets that we are not just dots on a screen; but aircraft with people inside.

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Original NASA ASRS Text

Title: B767 Captain reported encountering wake turbulence in cruise flight at FL340 on a trans-Atlantic route; afterwards; ATC restricted their offset to 2 miles right deviation.

Narrative: We were at FL340 on the track behind two other aircraft; one at the same altitude; and one at FL360. We started to pick up moderate wake; bordering on severe. I immediately offset one mile to the right; we were still experiencing the wake. I offset one more mile to the right and we started picking up the wake from the aircraft in front and above. Fearing that we would have injuries in the back; I decided to go one more mile to the right. After we offset three miles right; the wake turbulence stopped. I was going to advise ATC of our actions; but before I did that I wanted to assess the situation in the back of the airplane. While in the process of contacting the flight attendants we received a SelCal from Shanwick and they said ATC was showing us three miles to the right of course. I told them to advise ATC of our wake turbulence encounter; and to let them know that we needed to stay three miles to the right of course until 4729N; where the course changed; and the wind direction would keep us away from the wake from the aircraft in front and above. The Shanwick controller said that he was going to contact ATC; and let us know. After a few minutes; he came back and said that ATC said we only had three options; and the options were on track; one-mile right; or two. We changed our path to two miles right of course and started experiencing occasional moderate wake turbulence. We continued in the wake until 4729N. I think sometimes ATC forgets that we are not just dots on a screen; but aircraft with people inside.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.