Thanks for the wording Peter, there's heaps of engineering info on the net.
"
Applying an unreliable airspeed memory item would have proven to be very difficult because of the violent shaking and opening a QRH for an ADR check procedure even less likely."
http://blogs.crikey.com.au/planetalk...bus-operators/
I remember a simple 20sec procedure taking me forever in turbulence. Hmmm.
Just hope they find those recorders.
Cheers
Mark