Originally Posted by
chongcao
...
1>, accident is not caused by passenger delaying the exit, death is. You admit in the quoted text The important part is 'restricted access of the exist'. I am sure you will agree on this one. The exist should be kept clear and open for fast evacuation. right?
Three of six blocked! One of three delayed by a crucial minute. Yes, the exits should be clear.
Originally Posted by
chongcao
...2>, In safety measures, there is no 'if' 'but' 'statistically speaking'. Anything that would cause a safety concern, it is a no-go. Especially if it is life threatening.
Actually, safety is 100% about statistics - what is the greatest chance of survival. Safety concerns are always a compromise and not black and white as you suggest. Example - not allowing the affirmed on a plane would enhance safety, would it not? Everyone could get out quicker.
Originally Posted by
chongcao
...3>, there are too many variables in testing 'people evacuate with bags'. The problem is, hand bags do get torn through the usage, and some comes with sharp end. Would you consider it unfair if one of the test hand bags accidentally torn the slide and make 10-20 people delayed as that exit would be unusable on a B747 upper deck? ...
THAT is exactly why testing IS needed. Maybe all bags should be banned from the upper deck. Maybe not. If a bag tears the slide, what will those people do?
The cost of extensive testing - x millions - is worth it to save lives.
Originally Posted by
chongcao
...Things to consider here:
1>, Because you can not control the hand bag standard, the variation will cause potential damage and delay in evacuation.
2>, Next time when you exit an airplane from row 10 to 14, just watch people open the locker and take the bags out and then go. You will be amazed to see everyone has a different speed in retrieving their bag, and often will cause a big gap between two people who retrieve their bags from the overhead locker.
These are all variables that can be tested. Run 100 evacuations drills... run 200... 500. (You can even account for people becoming familiar with the drill!) Even doing this on single plane type will yield far reaching information. Over time, patterns will develop and real safety enhancements will happen.