Peter:'So now we are approaching the departure runway, expect to receive more information and instructions from the controller at tower control.'
Juan:'I've justed received a message from the controller at tower control. It says 'United 231, you are number 4 for departure'. Which I suppose means I'm fourth in the queue for planes waiting to take off.'
Juan:'It also says 'follow departure procedure'. What does that mean?'
Peter:'When you are instructed to follow departure procedure, it means when you take off you have to follow the specified direction, attitude and speed instructions that you have been provided with earlier (before departing from the terminal gate). Do you remember what they are?'
Juan:'Yes I have a copy here. The controller has also instructed me to 'hold short of runway 17 on R'. But there are three planes waiting in front of me to take off. So I can't stop at the holding position.'
Peter:'Just stop in front of the last aircraft in the queue and move when they move. Make sure you read back that last message to the controller.'
2 minutes later, when approaching the queue for takeoff
Peter:'Make sure that you stop at a safe distance before the plane in front of you in the queue to the runway.'
Juan:'I know, at least one plane's length. Got a message from the controller at tower. It says caution wake turbulence. I suppose it means that I have to be prepared for strong wind caused by the plane just about to take off.'
4 minutes later, when at the holding position just in front of the runway
Juan:'I've got a message from the controller at the tower. He says 'runway 17, line up and wait'. Do I stay here?'
Peter:'No you don't. When you are told 'line up and wait', it means you have permission to taxi on to the departure runway to the takeoff position. So read back the instruction to the controller and follow the yellow line in front of you and stop where it ends on the runway.'
30 seconds later, when on the takeoff position on the runway
Peter:'Just before the controller gives you permission to take off, they will tell you about the wind conditions, where the wind is coming from and how strong it is. They'll say wind 210 at 3 for example.'
Juan:'I've just received this message from the controller, 'United 231, wind 90 at 5, runway 17, cleared for takeoff'.'
Peter:'You've got cleared for takeoff. So you have permission to take off. But read back the instruction (without the information about the wind) before you do.'
10 seconds later
Peter:'So now start rolling.'
Peter:'Rolling means to move the aircraft along the runway when you are taking off.'
Juan:'Ok, I'll start rolling then. Do I have to tell the controller when I'm in the air and off the runway?'
40 seconds later, when the plane is in the air
Juan:'Just recieved a message from the controller at tower control to 'contact departure'. What does that mean?'
Peter:'When you leave the runway and are in the air, the responsibility of tower control ends. The controller is instructing you to contact on the radio a controller at departure control, who are responsible for aircraft once they have taken off and are in the air around the airport.'
Juan:'I'll contact departure control now.'