EMB ERJ 145 ER/LR
Flight Crew Instrument; Flight Crew Multiengine; Flight Crew Air Transport Pilot (ATP)
Flight Crew Total 2900; Flight Crew Type 670
Situational Awareness
Inflight Event / Encounter Loss Of Aircraft Control; Inflight Event / Encounter Wake Vortex Encounter
Flight Crew Regained Aircraft Control; Flight Crew Requested ATC Assistance / Clarification; Flight Crew Took Evasive Action
Environment - Non Weather Related; Procedure
On the arrival between 21;000 feet and 17;000 feet and 280 knots encountered severe turbulence in smooth air with no warning. Auto pilot kicked off and sudden bank to the right followed by oscillation in bank angle.On the descent starting around 21;000 feet; the aircraft rolled suddenly and hard right 30 to 50 degrees of bank and then oscillated left and right 30 to 40 degrees of bank. Auto pilot kicked off and both Pilot Flying and Pilot Monitoring had to be on the controls to regain stability. No loss of altitude other than what was planned since we were on the descent at about 2300 fpm. Took manual control of aircraft after event started and auto pilot kicked off. Slowed aircraft to 250 and shallowed descent. Captain immediately checked on Flight Attendant and passengers after event occurred and everyone was okay and seated. Seat belt sign was on at the time the event started.After event; ATC informed us we were following a 767 which was around 10 miles in front of us with a 40 knot tail wind in the descent and no other turbulence in the area; I believe it was wake turbulence.
EMB-145 First Officer reported encountering severe wake turbulence on arrival into BOS in trail of a H/B767.