There is no confirmed "b046.mp4" mystery or horror story. The term may be confused with other famous internet "file name" mysteries, such as: FAA B046 RVSM LOA Job Aid
: Implementing RVSM effectively doubles the number of available flight levels, increasing airspace capacity and allowing pilots to fly at more fuel-efficient altitudes.
is a specific technical designation for an FAA Letter of Authorization (LOA) or Operations Specification (OpSpec) that allows aircraft to operate in Reduced Vertical Separation Minimum (RVSM) airspace .