Originally Posted by
pineteam
Yanrair, if it was a good idea to use GPS in an unreliable airspeed case, aircraft manufacturers would recommend using it.
Read your previous post again: 2 serious mistakes that in real life will put you in a dangerous situation. Don’t try to reinvent the wheel.
Dear Pineteam
They do. Another thread shows Airbus agrees with Boeing
Boeing STEP 4 737 QRH UAS
4 Crosscheck the IRS and FMCgroundspeed and winds to determine airspeed accuracy if indicated airspeed is questionable.
And the fact that I made an error earlier in a calculation has no bearing on the validity or otherwise of the arguments being put here. My error was made while lying in bed typing and trying to imagine the situation I was describing. In a real plane that would obviously not occur. Either GS is a good tool or it is not. It is recommended by Boeing to make use of it. It is then a question of HOW you do that. It is that question that we are unravelling here.
Cheers
y