I don´t know whether we have somebody with more detailed knowledge at hand... but that piece of fuselage shell must be from the crown area of the cockpit. It is painted white, so according to the MH colour scheme it must be from the upper half of the fuselage (the lower is grey). There are no continuous stringers, so it must be from a quite far forward location. That would imply, the rocket actually exploded above and ahead of the aircraft, while all graphics shown so far seem to show an explosion in line of the approach from below (probably making use of the momentum the warhead already has approaching at supersonic speed).