Passenger reported a near mid air collision with an opposite direction commercial airliner during cr...

Attributes
ACN	1720755
Time
Date	202001
Local Time Of Day	1201-1800
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	B737-800
Operating Under FAR Part	Part 121
Flight Phase	Cruise
Flight Plan	IFR
Person 1
Function	Pilot Not Flying
Qualification	Flight Crew Commercial
Experience	Flight Crew Last 90 Days 12 Flight Crew Total 400 Flight Crew Type 0
Person 2
Function	Pilot Not Flying
Qualification	Flight Crew Commercial
Events
Anomaly	Conflict NMAC
Miss Distance	Horizontal 50 Vertical 200

Narrative:

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.

Original NASA ASRS Text

Title: Passenger reported a near mid air collision with an opposite direction commercial airliner during cruise; requiring evasive action.

Narrative: 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.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.