Bloggs,
The issue here is really the integrity of the loading system and trying to control as many of the variables as is practical to do so. The statistical analysis of passenger weights is intended to avoid the issue to which you refer, since the first airline to start weighing our increasingly obese passengers is going to drown in the ensuing
PR nightmare.
How good is the procedural control of W&B in your operation? Are systems reviews and QA checks being done on a regular basis? Are crews actively feeding back detected errors or are they working around known deficiencies in the system?
Defence in depth requires system integrity and the parallel tenet of keeping the problem as remote from the aircraft as possible.
However, I was charmed by the QF reference to their "proactive" response - which strangely only came about after they got caught out...
