Many of us often use airplanes to travel.
Of course we already know a lot of things that happen during the flight on the plane, from the entertainment in the chair, the choice of food, to the things that make nerves tense like turbulence or bad weather.
But of course we do not always know what happens in the cockpit, where the pilot controls the plane.
Apparently some airlines apply the rules about food on the pilot and co-pilot.
According to the rules, pilots and co-pilots will not eat the same food while at work alias flying the plane.
The reason makes sense: If the food is wrong-and causes poisoning, for example-then co-pilots who eat different foods should not get into poisoning and can still take over flying.
In addition, most pilots avoid certain foods that can pose a risk of stomach pain, such as raw fish or chili, before and during business hours for the same reason.
This is not a rule derived by the Federal Aviation Administration (FAA), although most airlines apply their own rules on this matter.
Food poisoning in the cockpit was also almost unheard of, except in 1982, a flight from Boston to Lisbon turned as the 12 crew, including pilots, co-pilots, and aviation technicians, fell ill after eating puddings made of tapioca containing toxins.
In addition, two pilots in the UK got food poisoning in 2010 while on duty.
Luckily, events like this are quite rare.
In addition to safety reasons, cooking for pilots and co-pilots is also tiered.
The pilot captain typically eats food from first class, while the co-pilot receives a business-class meal, said Captain Han Hee-seong of China Eastern Airlines to CNN.
Even so, he says that a generous captain will let his partner choose their food first.