investigators always want as to what started the chain of events. why did the plane end up in the water, but it's a pretty large piece from other ones i have worked on. if you remember the germanwings crash and how small the pieces were there. in this case a couple things could have happened. the wing could have detached and later this flapper piece, which is towards the wing closest to the body of the plane. and that impacts later. but this is a pretty big piece. and we can probably tell that the plane did not fall from say 35,000 feet straight into the water. not a diving crash into the water because the pieces would be much smaller. you wouldn't expect to find a piece this big. and then also that it appears that it was torn from its attach point or from the hinges. and that would suggest there were stresses put on that piece. and this piece is used to extend the wing area and give an aircraft more lift or to turn the plane so the plane could have been turning or it could have been in a configuration