Three weeks after an Air India Boeing 787 crashed, investigators are still piecing together what went wrong. In the meantime, aviation safety experts have begun to narrow their thinking.

Firefighters described what they found in the wreckage of the Air India plane that crashed shortly after takeoff. They shared how they saw the bodies of the victims.

A panel of Indian lawmakers will review safety in the country's civil aviation sector and has invited several industry and government officials to answer questions on July 9, with topics set to include Air India's recent plane crash.