B767 Undifferentiated or Other Model
Flight Crew Air Transport Pilot (ATP); Flight Crew Multiengine; Flight Crew Instrument
Flight Crew Last 90 Days 100; Flight Crew Total 7788; Flight Crew Type 5863
ATC Issue All Types; Deviation - Track / Heading All Types; Deviation / Discrepancy - Procedural Published Material / Policy; Inflight Event / Encounter Wake Vortex Encounter
Air Traffic Control Issued New Clearance; Flight Crew Requested ATC Assistance / Clarification; Flight Crew Took Evasive Action
Environment - Non Weather Related; Procedure
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.
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.