AHMEDABAD – In the wake of the devastating Air India plane crash in Ahmedabad, U.S. aviation safety officials have joined the ongoing investigation into the disaster that claimed at least 271 lives.

Air India and the Indian government were looking at issues linked to its engine thrust, flaps, and why the landing gear remained open as the plane took off and then came down.

As anguished families wait for the return of their loved ones’ remains, tensions are mounting over the slow pace of DNA identification following the deadly Air India crash. More than three days on, only a fraction of the victims have been identified,