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.

A preliminary report released last week included detail about the fuel, saying that the fuel to the plane's engines appeared to have been shut off.