Jacko wrote:
I certainly can’t imagine having to check a dial to know whether my aeroplane is ready to fly
I gutes nobody needs this. At the approach, however, those ASIs come in handy to check whether you are 10kt too fast or not – but I guess in these airplanes you are talking abut, 10kt more in final don’t make that much of a difference. In others they do…
For sure, 10 knots too fast on final is about 25% excess speed, so in theory it adds at least 50% (say 50 m) to stopping distance. In practice, it can add much more if it delays the point at which the brakes become effective. That may not be a disaster but, trust me, such ham-fistedness causes friends on the ground to laugh a lot. 
Jacko wrote:
so in theory it adds at least 50% (say 50 m) to stopping distance.
YMMD! Thank you!
Peter wrote:
That could be nasty… especially if the “modern avionics” disables autopilot functionality. Does anyone know if Aspen/Garmin kit supports autopilot operation with airdata lost?
The aspen displays a big Red Cross and failure message across the display when reaching 40 its ground speed. I did some high speed taxis during lockdown and didn’t remove the pitot covers which is why I know ;-)
IOW, with a 20kt headwind, you discover it just as you are about to rotate, with the end of the runway coming up
That’s horrible… it could easily kill somebody because it won’t be expected and in say OVC002 you have to make a fast transition to the backup AI.
Jacko wrote:
now we can ask the nice lady in the GTN to “say fuel flow”
Oh. How does one set that up, with a GTN already connected to a fuel flow meter?
