Originally Posted by crashresident
Look at the metal ring rounding the blades.
Scratch-marks suggest engine was spooling during impact.
That's a hell of an assumption based upon a somewhat blurred photograph and particularly as the area you refer to is known as the rub strip. It might well be crash damage but generally speaking investigators usually reserve judgement.
You might be an 'expert' on how engines sound from your flat but as others have already suggested I'd avoid getting carried away on the wave of your 15minutes of fame. More for your own benefit than anything else.