Re: Pulling a Stop to Runway Overruns
(a) the landing distance factor is applied to the demonstrated flight test/aerodynamic model data as accepted by the Regulator and applies to the total demonstrated distance from 50ft, not rollout distance.
(b) may I suggest that, if the approach is flown accurately to a predetermined aiming point, few pilots with any experience to speak of will fail to detect that they have floated significantly beyond the planned touchdown zone ...