Some rules are not written but still you should not do on a flight. What are they? The followings are 5 of them.
1. Taking both of the armrests
Unless there is no one sitting beside you, or else never use both of the armrests.
Never use both the armrests. It might be convenient for you, but you need to respect the personal space of your co-passengers.
2. Recline the seat forever
Yes, it is comfortable to recline your seat. However, it does not mean you need to recline it as far as you can. Pay attention to the passenger sitting behind you. Also, do not recline your seat during mealtime. You do not want your dinner to spill on yourself as well.
3. Having a loud conversation
A polite conversation between you and your friends is fine. However, remember some people enjoy flying in silence. You do not want to disturb the others.
4. Visit the bathroom every 30 minutes when you get a window seat
If you get a window seat, continuously getting up to visit the bathroom will upset the one sitting right next to you. Be sure to visit the bathroom before you get aboard to the flight. You can always request an aisle seat to avoid inconvenience.
5. Taking up more than you are allowed in the overhead storage
It is rude to the others if you are trying to utilize the space allocated for other passengers. Make sure you just take up the space you are allowed to use.