AN ex-pilot has revealed the big mistake people make when boarding which could be deadly in an emergency.
Dan Bubb, who used to be a pilot, is now a professor at the University of Nevada in Las Vegas.
He recently revealed how people who put too much stuff in their hand luggage could cause huge problems on the flight.
He told Travel + Leisure: “I do not overstuff my carry-on bag.”
He explained: “I’ve seen many passengers bring very large and heavy carry-on bags onboard the plane and try to unsuccessfully stuff them into the overhead bins.