Remember, children as young as five can fly with out a parent/guardian (in the US, per AA website). So that could happen without change to regulations.

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HWR_14 6 hours ago | parent [-]

The crew is aware of all the unaccompanied minors on a flight.

	▲	8organicbits 2 hours ago \| parent [-]
		Is that a meaningful distinction, though? "Aware of" != "Actively supervising". I guess it's easier to page a flight attendant than find a parent seated elsewhere, but neither can provide active supervision.