When I was in Boy Scouts years ago (60's) I used to share rides with another scout whose dad is/was an engineer (Duke U professor) and I remember him talking about just that problem of ladies high heels and the load they excerted on the aircraft floor.Techni-quibble: Seriously doubtful, since the passenger area has it's own floor and is above the cargo hold. Nobody is walking directly on the skin of the aircraft.
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