10. Reinforced door

If you’re wondering how pilots communicate with the flight attendants, well you’ll be happy to know that they do this through an armored door and an intercom. The reporting has to be done at least once every 40 minutes during the day and every 20 minutes during the night.

This is one way of ensuring that the pilot is working just fine. Should something happen inside the cabin it’s the work of the flight attendants to use the emergency code they have to get into the cabin and look into sorting the problem out.