It is not only the 737. On the 747 we now have two different pitch and power combinations for unreliable airspeed. One for flaps up and one for flaps extended.
For flaps up, we set 80% N1 and 4 degrees nose up. Yesterday in cruise at a heavy weight a bit above optimum altitude was typical at 2.5-3 degrees nose up and 92% power.
It seems foolish to me to increase pitch and reduce thrust if we notice that our airspeed is unreliable. In fact it might be downright dangerous.
Last edited by JammedStab; 19th Mar 2015 at 20:24.