B737 Undifferentiated or Other Model
Flight Crew Air Transport Pilot (ATP)
Flight Crew Type 2489
Inflight Event / Encounter Wake Vortex Encounter
General Physical Injury / Incapacitation
Environment - Non Weather Related; Procedure
While at FL360 in cruise flight we were given a 20 degree right turn for traffic by Washington Center. We were in smooth air and VMC conditions with the seat belt sign off. Unexpectedly we experienced two quick jolts of moderate chop which lasted less than 5 seconds. We immediately turned on the fasten seat belt sign and called the flight attendants. At that point they reported no injuries. Later during the flight; two flight attendants said they felt they might have been injured during the turbulence encounter. One said his hip and lower back hurt a little and the other said her back hurt a little. Both were able to complete the flight without incident. The First Officer and I believe we encountered some wake turbulence from an aircraft that had recently passed over us 1000 ft above heading the opposite direction.
B737 Captain reported two flight attendants suffered minor injuries after they encountered wake turbulence at FL360 from an opposite direction aircraft 1000 ft above them.