Thanks, Jose.Here's a question for the experts.... In the second picture, are the spoilers being used to slow the aircraft, or are they assisting in a turn? :-) Or is it impossible to tell?Cheers.Ian.

Just slowing.

Slowing down. I don't see any deflection of the high speed (inboard) aileron.Kevin in CYOW

To slow down the aircraft. If im not wrong in air its called Speedbrake and when its on the ground; Spoilers. When turning it moves the square that its between the 2 flaps of that wing. From EHAM I took a B734 KLM to LIRF and I didnt see move anything when turning

"If im not wrong in air its called Speedbrake and when its on the ground; Spoilers."Hi, Navaho.According to my books, all of them are called spoilers (generically). They either have a lateral control function or a speedbrake function.... or both. The speedbrake lever operates in the air and on the ground, so I'd say that you would be able to call these panels "speedbrakes" at all times. Similarly, the panels move when you turn the wheel, whether you are in the air or on the ground.There are twelve panels, numbered 1, 2, 3, 4, 5... etc...from port to starboard. All panels are used for roll control at low speeds. Panels 4, 5, 8 and 9 are not used for roll control at high speeds. For the speedbrake function, all panels are used on the ground, but 4 and 9 do not operate in the air (as speedbrakes).In your photograph, the spoiler panels 1, 2, 3 and 5 are up. Even if the inboard/outboard ailerons were not shown, this configuration suggests that the panels are not being used for high or low speed roll control, but as (in air) speedbrakes.Regarding aileron movement and spoiler movement: Although the spoiler panels can move with as little as 4 degrees of control wheel movement (with some flap configurations), the extent of spoiler movement in your picture, suggests that inboard aileron deflection would be substantial and quite visible (which it isn't).So... everyone was correct when they said that the spoilers are being used as speedbrakes :-)"From EHAM I took a B734 KLM to LIRF and I didnt see move anything when turning"I'll let the 737 experts comment on this one (but I thought that all Boeing's used spoilers to assist with roll control???)Cheers.Ian.

What you see is a spoiler...it spoils the airflow over the wing to kill lift, thus initiating a turn or if used simultaneously on both sides, loose altitude/airspeed. A speedbrake on the other hand (as seen on Fokker F-100s tail cone) simply adds drag to slow the plane.

Hello everyone. Im wanna share with all simpilots the pics I took on my flight from KMIA to EHAM at FL390 Martinair 767-300ER. It was a 9:25 flightJose Rafael NavarroYV