Starting on October 22, the Federal Aviation Administration eliminated the rule that required an off switch for the "No smoking" sign, even though smoking on U.S. flights officially ended decades ago.

‘No Smoking’ Signs on Planes Can Now Stay On Forever The Federal Aviation Administration did away with a rule that had required an off switch for the sign even though smoking on U.S. flights ...

That’s not the case on the A321neo, which has software that keeps the “No Smoking” sign turned on continuously during flights, like many other aircraft in United’s fleet.

Thus the “no smoking” sign ultimately became a “no flying” sign, and United was forced to ground its brand new fleet of five planes. Fortunately, it didn’t last long.

Tetra Images/Getty Images Just last week, the Federal Aviation Administration (FAA) decided that it was time to do something about "No Smoking" signs on planes. So they officially got rid of their ...