With conclusive information hard to come by weeks after the fatal Air India crash, the aviation industry has shifted its focus to possible pilot error.

The left engine separated from the aircraft and struck the north corner of this building at ground level. The aircraft's right engine was found resting beneath a concrete water tank on the building's rooftop. The inboard section of the right wing was recovered near this area.

The captain of the crashed Air India jet is likely to have cut off the fuel supply before it went down in Ahmedabad, US officials believe.