I overhead a flight attendent tell man babywearing (I think it was a Moby) that when the fasten seatbelt sign is on that the child needs to be out of the baby wearing gear. That the baby can go back into it when the fasten seatbelt sign is off. I think the man and his wife was thrown off by it. His wife understood because I guess the baby wearing gear isn't TSA tested, but they seem to have an newborn. I felt bad for them, I could hear the little baby crying during take off and landing. I did write myself a note so I would remember for the future.

Did you know about this rule? How did you work around it?