Whilst the side discussion on monitoring, margins, etc, covers many aspects, how would this be applied to the accident situation. What additional distance would be expected to be added, and what is the origin of the baseline data.
Most regulatory agencies and operators require an additional distance safety margin to over baseline landing data; e.g. using OLD the minimum recommended addition is 15% (FAA, EASA), in some manuals this is listed as FOLD Factored Operational Distances (Airbus) - a significantly different concept from 'actual' distances or AFM distances with other factors.
What landing distance safety margin keeps you out of the office ?
What is this operators policy, national policy, is it recommended or mandated ?