Originally Posted by
hamster3null
The piece looks way too short to be a flaperon from a B777. From the second photo in Telegraph article, it's at most 2.5 m long. B777's inboard flap is at least 5 m long. Either it got snapped in half (doubtful, since both edges look straight), or it's not from a 777.
Based purely on rough approximations from pictures of 777s, it looks about the right size to me. The flaperon appears to cover less than 1/10 of the length of the wing, which puts it under 3m long.
Also, from the damage, it would presumably have to be composite rather than metal? That might eliminate some other possibilities.