They why do they, (crew members), turn OFF the seat belt sign when airborne, if it's a regulation to keep them on at all times? What am I not getting here?
Because nobody can fly for 16 hours from London to Singapore with everybody buckled the entire time.
Human physiology does not allow that. On an airplane with 200 people, at any given moment, somebody has to go to the bathroom.
In fact, given my experience, staying seated for even 10 minutes, is not possible for some people.
People jump up and get out of their seats to go to the restroom whenever they feel like it. Not realizing that their selfish action impacts the ability of thousands to depart on time. When they get up, I have to stop, which means all the airplanes behind me have to stop, and we all wait for that person.
It happened twice just last week. On the ground in Los Angeles, in one of the most dangerous places in the world, which is between runway is 25 left and 25 right.
Unable to move the airplane while they were out of their seat, we had to sit between those two runways for an extra 10 minutes while the airport managed departures.
As a result, we were a few minutes late at the gate.
So part of my admonition, and my welcome aboard announcement, is that you keep your seatbelt fastened while you are seated.
Because, common sense is an uncommon virtue.