BOAC, alf, Dream Land, TowerDog, MoodyBlue, others,
A very interesting discussion, I enjoy the tone and the kind of background information that professional pilots can supply.
Re these issues in a WB-Analysis: In CGH we did not find that "ducking under" the glide slope was a causal factor for that particular accident, although we found it interesting to note, and have been wondering how common it is/was.
The Quito/Iberia case is different in that hardly any substantial data is publicly available. When and if it becomes available we might do another analysis, and also compare it to other runway overruns, be they by A, B, MD, or F aircraft.
Cheers,
Bernd