Whilst the flying scenes were technically accurate, the decision to write the crash investigators in as the "villains" ruined it for me. It makes for good storytelling, but for accuracy it throws out the good work done on the crash itself.
And outside of the crash scene, I honestly found it a bit boring. There's no real character development, tension or drama, and sort of ends on a flat note.
There's probably been aviation incidents involving pilots nursing crippled aircraft safely back to earth that would lend themselves to a better script. Not a bad film in itself, but not one I'd consider to be a aviation classic.