B737-800
Flight Crew Commercial
Flight Crew Last 90 Days 12; Flight Crew Total 400; Flight Crew Type 0
Conflict NMAC
Flight Crew Took Evasive Action
Airspace Structure
Aircraft X; flying at 39;550 ft. straight and level on a track of 93 degree had a near miss midair collision with an airplane flying opposite direction. RVSM not respected; the airplane was approximately 200 ft. and 50 ft. to the north of Aircraft X. Both airplanes were flying straight and evasive action were taken.I am a passenger of the airplane and I witnessed it with other passenger.
[Report narrative contained no additional information.]
Passenger reported a near mid air collision with an opposite direction commercial airliner during cruise; requiring evasive action.