Garage Years
"Finally, there has been some speculation that the pitot issue bay have been drain blockage leading to an increase in airspeed indication... where is this imaginary event coming from? Does anyone here rationally think that the BEA would not mention this? "
BEA left out a great deal, though including some milestones in their report. I am unwinding the flight from THS NU 3 degrees, backwards, and find that a possibility exists for unreliably high ias. With aft fuel for trim, wouldn't the HS be expected to provide less NU force for a given cruise velocity? So I am merely pondering the existence of a need for augmented NU from HS. If ice crystal blockage, I am thinking the Drain would pack first, increasing Pressure in the Tube, which the AD would read as increased a/s? The events that are most important may appear to be sequenced in the BEA note, but they are loosely organized v/v Time points (From 2:10:05). So 275knots may have been the "start" of uas, but that may not mean that the actual peak airspeed was not higher? Having not included a great deal in their note, no one can then select such an early "read" from a later Report, and claim "manipulation". That is merely an extension of their evident desire not to give up "too Much".
Understandable, I think.
If not due to speed, why was the HS trimmed for that much NU? Or, is that a normal cruise Trim for the reported mach?