Boeing 80 knot call v Airbus 100 knots. Why the difference.
For the B737 series the 80 knot call during the take off run is SOP. Considering VR depends on flap setting and could be up around 150 knots on occasions, 80 knots seems a relatively low speed, when defining the line in the sand between low energy and high energy.
On the other hand,I believe some Airbus types have a 100 knot call - presumably for the same reason that Boeing go for 80 knots. Again VR can be also be 150 knots plus or minus here and there.
With both manufacturers, recommended crew actions may change in event of a non-normal event showing up before or after 80 knots Boeing, or 100 knots Airbus. Both speeds are well below a typical V1.
Is Boeing too conservative in selecting the lower figure of 80 knots compared to 100 knots of Airbus? I would have thought that 100 knots was a more realistic decision point (and that already has plenty of fat built in) for the line between low and high energy stops?