How to delete recorded position of mesh on animation timeline? I've got problem with my animation. I've got a sword in my scene, but I somehow animated it so that its handle starts falling down when I play through the timeline, and I don't know how to delete this. 


Look at the picture, there's some orange line at timeline bar - that's what I want delete.
You set the handle as a rigid body. The yellow line in the timeline shows you how much of the physics Simulation is cached. To delete the rigid body and all of the motion calculated from it Select the handle, then in the physics tab of the tool bar press remove.

You can also get to the physics settings in the physics tab of the properties window.