Keep your seat belt fastened (even when the fasten seat belt light is out)

In the wake of the recent serious incident on an Alaska Airlines Boeing 737 MAX 9 where a deactivated exit door blew out leaving behind a gaping hole in the fuselage and a cabin that depresuried in seconds, this is a quick reminder that it’s almost always a good idea to keep your seat belt fastened, even when the fasten seat belt light is out.