The FAA believes that the proper procedures regarding shoes during an aircraft evacuation is to leave them on.
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NTSB RECOMMENDATION A-96-140
BACKGROUND.
According to the NTSB report accompanying this recommendation, during a recent aircraft evacuation, passengers were instructed to remove their shoes. Therefore, the NTSB issued recommendation A-96-140, asking the FAA to develop a uniform policy regarding the wearing or not wearing of shoes during an aircraft evacuation. Many safety experts believe that shoes provide protection from debris and fuel following an accident and shoes should be worn during an aircraft evacuation. The only problem with shoes appears to be the wearing of high heeled shoes down the slide. It is unlikely they could damage a slide; however, that possibility does exist. There is the more likely possibility that high heels could hit another person or could become wedged in various places, thus resulting in injury.
POLICY.
The FAA believes that the proper procedures regarding shoes during an aircraft evacuation is to leave them on. In the case of a forewarned evacuation it is desirable to remove high heeled shoes and stow them in a approved stowage area such as an overhead bin. They should not be placed in the seat pocket.