B737 Undifferentiated or Other Model
Other / Unknown
Conflict NMAC
General None Reported / Taken
Human Factors
I was flying to Phoenix; AZ. Upon passing North of the Taos; NM area (Ski area visible from airplane) shortly thereafter; our Aircraft (I believe a Boeing 737) had an aircraft pass directly above it with my approximate estimated distance of about 200 vertical feet between aircraft and ZERO feet horizontally between aircraft. We had been flying in a westerly direction (my guess looking out the window at the ground is somewhere in the approximate 35;000 - 40;000 Ft range when an unidentified airplane passed over the top of us from a north - northwest direction toward a south - southeast heading having a double contrail and a blue body to the jet aircraft. The aircraft passed so quickly and its contrails were so close I consider it a near miss and in no way in line with FAA regulations that normally require miles between aircraft. The pilot and crew of [my flight] had been flying their aircraft in a steady and deliberate manner and did not veer in any way prior or after the other aircraft passed overhead which did so without turning; ascending or descending. I believe the crew of [my flight] was likely not even aware of the other aircraft due to the other aircraft's sideway directional path toward us; the other Jet was likely not visible to the crew or radar of [my flight]. However; I would find it very hard to believe the other aircraft would not have been able to see us.
B737 passenger alleges an NMAC occurred during a flight to PHX.