Can anybody fly through coffin corner without airspeed data and survive?
This term seems to be acquiring a life of its own... Coffin Corner. Goodness knows what any lay members of the public would think reading 'that' statement.
1) You don't fly '
through' that region, as if it's a part of the sky, you fly
'within' an altitide speed band, a regime, tight or wide in extent, as explained 100's of posts ago, probably +/- 25 kts plus other 'certificated' margins on top of that.
2) We don't know for sure that ALL airspeed and attitude data was lost, do we?
3) It's the turbulence that would be the primary difficulty, rather than being within a restrictive flight regime per se, if all airspeed data was lost, since a default attitude and power setting is the recommended 'exit strategy'
I agree a very serious situation would exist when losing airpseed data when 'way up there', and would be amplified by manifold issues at night in turbulence/ice/preciptation/lightning...
But saying flying '
through coffin corner' without airspeed data gives totally the wrong impression...