good evening/morning/night flight sim world ;-) I spend my evening with watching aviation videos on youtube and found two intersting videos with things of wihich I never heard or seen. the first is a departing 767 in a heavy thunderstorm. the question: is he taking off with extended speedbrakes? is it a special procedure for taking off in heavy rain?

the second video is a landing 747 (lufthansa I think) and I ask myself what that system with that mechanic woman voice is ("departing one one" and something after clearing off the runway).

thanks for any answers. have a nice night nicolas reich

On Video 1.Not sure if those are speed brakes but instead ailerons to correct for a crosswind across the runway. Notice they go down when the main aileron on the wing goes down in the center. You use aileron in heavy winds to keep the wind from flipping the plane (on smaller planes) or pushing you around. On Video 2.Seems that the system is calling out remaining runway length. Pretty cool if thats the case.

On Video 1.Not sure if those are speed brakes but instead ailerons to correct for a crosswind across the runway. Notice they go down when the main aileron on the wing goes down in the center. You use aileron in heavy winds to keep the wind from flipping the plane or pushing you around.

Correct, the PF must have the yoke turned to the left to counter act the crosswind.

Well in Vid one, while it does look like the speed brakes are deployed, he's actually just using the ailioron to help achieve dirctional control in the crosswind but by the looks of it he's using too much as the spoilorons are indeed coming up. In vid two, thats a safety system designed to make sure pilots take off on the right runway and not on the wrong one or even on a taxi way, I think there was a case of a China Airlines A340 taking of from a taxiway there a few years ago up in Anchorage, Alaska... However the name of the system fails me at this time, sorry. Edit: Yee beat me to itEdit #2: The system in Vid two, is RAAS....

Edited August 1, 201114 yr by Aerlingus231

That's what I'm thinking. It kills some of the lift on that wing, to help keep it down.

First video:The pilot has the yoke to the left, likely to be because of cross wind from the left, so roll spoilers are in effect. Stops the plane bring rolled over!

1st video: Those are just the spoilerons. The yoke is just turned all the way to the left. If you were looking out the right window, you wouldn't see this. At the beginning of the video, you can clearly see that the inboard and outboard airlerons are angled up. The summery is that the spoilers were not deployed, but rather the captain was just correcting for a crosswind. (also had the spoilers been deployed, you would see the ground spoilers...which you don't see in this video)2nd video: That's the RAAS.Dang....I'm way late.

Edited August 1, 201114 yr by Efussander

....I think there was a case of a China Airlines A340 taking of from a taxiway there a few years ago up in Anchorage, Alaska... However the name of the system fails me at this time, sorry. Edit: Yee beat me to it

The system is called RAAS (Runway Awareness and Advisory System) and is developed by Honeywell :)

I know that under these circumstances it is up to the pilot deciding wheather to take off or not. Also in this case I am very curios to know from real pilots which is the criteria to take off or wait. For instance, even if the 767 is a beast, I would have waited a while.

On Video 2.Seems that the system is calling out remaining runway length. Pretty cool if thats the case.

In vid two, thats a safety system designed to make sure pilots take off on the right runway and not on the wrong one or even on a taxi way, I think there was a case of a China Airlines A340 taking of from a taxiway there a few years ago up in Anchorage, Alaska... However the name of the system fails me at this time, sorry.

It's called RAAS and will not be modelled. It's under consideration for an SP and I dearly hope it will make it. EDIT you beat me

Edited August 1, 201114 yr by badderjet

RAAS, thats it, God that totally blanked me there...

thanks to these many quick answers ;-)