Thrust Levers for Multiple Engine Civil Jet Aircraft

Let me start by saying I am not a pilot, but I have a question. Jet aircraft with more than one engine have a thrust lever for every engine. I have seen videos of pilots simultaneously pushing all 4 levers at once. But they must also be able to use the levers individually.

My question is what mechanism is used to "lock" all the levers at once, and push them forward simultaneously, and how would the pilot then be able to control the thrust levers individually in case of an engine failure? Do the thrust levers move individually and the pilots just make it seem as if though they are locked together in unison? Or is there a mechanism by which the pilot can CHOOSE whether to move the levers in unison, or by themselves?

If different aircraft use different methods, I would really appreciate it if someone (preferably pilots) could describe the different methods.

I know that at least on the A320 the levers are not locked, the pilots just move them together. I reckon its the same on the A330 and A340

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Originally Posted by GoingForGold

I know that at least on the A320 the levers are not locked, the pilots just move them together. I reckon its the same on the A330 and A340

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Thanks for the answer. Do you know what those 2 handles ahead of the thrust levers are used for in the A320?

http://s27.postimg.org/qcj860jw3/image.png

Quote:

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Originally Posted by GoingForGold

I know that at least on the A320 the levers are not locked, the pilots just move them together. I reckon its the same on the A330 and A340

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Thanks for the answer. Do you know what those two handles ahead of the thrust levers on the A320 are used for?

http://www.mycockpit.org/forums/atta...id=11204&stc=1

The handles you mention activate reverse thrust.