There are secret messages that pilots send to cabin crew with the seat belt signs
A seat belt sign seems straight forward enough. Stay seated, and fasten your seat belts. Once it’s off, you can feel free to get up and stretch your legs or head to the bathroom. But cabin crew members know the ins and outs of what it really means when that symbol is lit up and it’s a bit more complicated than you first realise.
The plane is taking off soon
Just because you’ve been told to stay in your seat. It doesn’t mean the cabin crew has to yet. Different airlines do have their own rules about what the chimes you hear mean. But if you hear two dings, then see the seat belt sign flash, the flight deck is warning the crew to sit down because the plane is about to take off.
We’re just about to land
That same signal the flight deck uses to communicate take-off time is also used when the plane is about to land. It is the final sign from the captain for the crew to take their seats.
The plane is parked
Ever hear a crew member tell you to stay in your seat until the plane reaches the terminal. Only to see the seat belt sign turn off almost immediately? The captain turns the seat belt sign off when the plane is parked. But that doesn’t mean passengers should start getting up. Although the aircraft is at a standstill and passengers believe that it is safe to get up and start getting their bags. The aircraft could still move unexpectedly, which could result in passengers injuring themselves.