Waiting on the runway prior to take off?

Question

I would like to know before entering the runway for take off some aircraft's line up on the runway and then wait for sometime then push the throttles but some others don't pause at all once they enter and line up the runway they apply take off thrust. What is the reason for this?

Answer 1

If the aircraft is lined up in the runway, then there can be two scenarios: Either the pilot is waiting for the aircraft that just departed to be far ahead enough (to keep proper spacing between the two aircrafts) or he has not received from the tower clearance for take off.

Answer 2

Most likely the pilot has been given the command to "position and hold". What this means is that the pilot has been given clearance to enter the runway, but not to take off. Controllers do this when spacing is a bit tight, and there is not time for the plane to enter the runway before taking off. Because the plane is already on the runway, when the pilots are given the command to take off, they don't have to waste time entering the runway. They just power up and go. This procedure allows planes to take off when they normally couldn't.

There may, of course, be other reasons a controller would have a pilot position and hold, but I believe my above example is the most typical reason.

Answer 3

Pilot's preference. There are a number of reasons. The most important of wich is waiting for the plane ahead of you to report gear up an away. If the way is clear then it's a power thing some planes need to rev up to full throttle before letting off the brakes so they can take off before running out of runway. Others don't have that worry so as soon as they're pointing in the right direction they just go for it.

Answer 4

Depends on what's coming in on the active runway. If the tower tells you to "hold short" you pull up to the line and wait until they tell you the active is clear and give you permission to pull out and take off.... or back-taxi if that's necessary.

You don't just pull onto a runway when you want too... if it's a controlled airspace, for obvious reasons. On the other hand, if it's not a controlled field, then it's "see and avoid" and it's up to the pilot to check the end of the runway before pulling out.

Answer 5

It can be a number of reasons. If the plane lines up and goes straight away without pausing, there may be another plane on short final approach and there is no time to wait. If the plane waits for ages on the runway the pilot may not have finished completing final checks or they need to wait for another plane that just took off to get far enough ahead.

Answer 6

It all depends on what the tower tells them to do.

If the tower tells them to go to the run-up area and "hold short", that means he MUST NOT enter the runway. In fact, the pilot MUST respond on the radio, "hold short" otherwise, ALL the traffic on the airport will stop. That is a federal aviation rule.

If the tower does not tell them to "hold short", or if he is told to "experdite" then he can immediately take off.

This "hold short" is issued when there is a conflicting traffic such as another plane landing on the same runway, or other reasons where him entering the runway immediately is not advisable.

Answer 7

they have to get clearance from air traffic control but most pilots ask before entering the runway making it a straight forward take-off.

Answer 8

When a commercial airplane takes off, the turbulence stays in it trail that comes of its wings. Its like spinning cylinders of air. It is dangerous to be in this zone because turbulence may cause the pilot to lost control of the airplane. Thats why they wait a few min for the turbulence to clear before taking off.

Answer 9

There can be traffic preparing to land OR that just departed. You wouldn't want to take off a 500 MPH airplane right behind a 75 MPH airplane.

Answer 10

Pray for me, when I'll buy my own Boeing 707 I'll answer u