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 deadly Air India crash last month has renewed a decades-old debate in the aviation industry over installing video cameras monitoring airline pilot actions to complement the cockpit voice and flight data recorders already used by accident investigators.

India's aircraft accident investigation body said on Thursday it was too early to reach any "definite conclusions" on what led to the deadly Air India Boeing plane crash last month that killed 260 people.