MD-82
Inflight Event / Encounter Wake Vortex Encounter
Flight Crew Took Evasive Action
Aircraft; Environment - Non Weather Related
I was the pilot flying. We were in level flight at FL280 on the BYP arrival indicating 310 KTS assigned. We were just inside 10 miles in trail with a Boeing 767; as [the B767] flight was cleared to descend through our altitude. The wake turbulence event began with increasing vibration both heard and felt in the controls followed by an uncommanded roll to the right of almost 30 degrees. I disconnected the autopilot and corrected with aileron and slight rudder inputs to regain control of the aircraft. We leveled off momentarily and then continued our descent. The Captain called back at this point to check on the flight attendants. They were all seated at the time; as were the passengers; and no injuries were reported. The Captain then made a short PA to the passengers to explain the event. As we continued our descent; I slowed the aircraft to 280 KTS and shallowed our descent rate. However; passing through FL260; we encountered a similar wake turbulence event that was handled in the same manner as the first. At this time; I began a turn to the right to get out from behind the preceding aircraft and the Captain informed ATC that we had experienced a wake turbulence event and were turning off course. ATC approved the turn and after enough time had elapsed to provide ample divergence between our course and that of the aircraft ahead; we were cleared back to BYP and flew the remainder of the arrival. After each event; the controls displayed a slight vibration that lasted for several minutes after the wake turbulence event ended. After a few minutes; the vibrations dissipated and the aircraft flew and operated normally. We reported the event in the [log] and requested an inspection from maintenance to confirm the condition of the aircraft.
[No additional information in narrative 2]
An MD-82 flight crew reported a wake vortex encounter from the preceding B767 on arrival into DFW that resulted in an uncommanded 30 degree roll and some flight control vibration that persisted beyond the event.