I guess we will need the full report to understand who did what when, and in response to what oral commands. It's very difficult to understand what happened from the little we know.
At a guess, having two captains instead of the usual crew, a captain and an FO, may have led to some non-standard CRM after whatever triggered this accident. This is something that only an analysis of the CVR information can tell about, I think.
It seems from what we have read so far that the crew must have first either lost power on the right engine for some unknown reason, or else have been presented with a false indication of loss of power on the right engine. It seems that they then shut down either the (good) left engine or perhaps both engines, in response to whatever happened first.
Whatever happened to cause that, the crew seems to have found themselves with no power, at low altitude and low speed, in a place where there were not many places to make a reasonably safe off-airport landing.
Those videos seem to show an aircraft that is stalled and out of control, since it's first sinking, and then dropping its nose and left wing as it passes out of sight over the bridge. Too, the images of the wreckage in the river show it as inverted, which must mean t a fairly high rate of roll in the last few seconds of flight to end up that way.
Last edited by chuks; 11th Feb 2015 at 09:20.