Discuss we may till all the bone is sucked dry, but whenever an aircraft ends up on landing beyond the firm bit, it can ONLY be down to two causes:
- Aircraft landed long, given prevailing conditions and published performance parameters, and it was physically impossible to stop the plane within the available runway remaining (eg. AF/YYZ, IB/UIO). In this case the moment reversers are selected, the overrun is a 100% certainty.
- Aircraft landed within theoretical limits, but due to some action (or lack of) by the crew or technical malfunction, the plane did not decelarate as it should have.
Unfortunately all of the above with the possible (rather remote) exception of a brake/reverser failure (of which we would probably be aware of by now) logically points to at least some error in jugement from the part of the crew. We had regular 767 operations into airports with runways of around 2000m, for a 738 such runways are the norm in many parts of the world.