1. Slides are only certificated for windspeeds up to 20-25 knots, yet the aircraft can operate in windspeeds of twice that. If the windspeed is too high for the slide it will blow back over the fuselage etc (various post-evacuation photos have shown just that). Certification authorities put their heads in the sand on the consequences of an evacuation in a windspeed above the slide limit.
2. No guidance is given to cabin crew or passengers on how to use the slide with an infant in arms.
3. Despite being told not to, pax insist on taking their duty free bottles etc so that there is a pile of broken glass at the bottom of the slide.
4. Many more flight crew (flight deck and cabin) are injured (and in at least one case killed) during evacuation training than during real emergency evacuations. For this reason, some licensing authorities are withdrawing/limiting the requirement for slide training involving going down the slide.
[ 28 November 2001: Message edited by: Hew Jampton ]