It will be clear only after Air India from Air India from Air India to London, but it is known that the first moments in the aviation are the most difficult.
Indian investigators will join US and British experts in the coming days, who will try to find out what Boeing 787-8 Dreamliner has fallen shortly after flight, 1.5 km away from the runway of Sardar Wallbhay International Airport.
This is the first deadly crash associated with DreamLiner since 2011. Since the entry into commercial operation. As a result of the accident, all 241 people on board were killed, as well as people on the ground.
The BBC spoke with aviation experts, as well as in India (some people talk about anonymity), who regularly fly to the country's international airports, trying to find out what factors could lead to a collision on the residential buildings in Ahmadabad.
Highness issues
The plane was conducted by Captain Sabarwal and Spa Clave Kundar. Both were experienced pilots, whose combined flight duration was more than 9000 hours. Sabharval had more than 22 years of experience.
There were 242 people on the plane. Air India said that the plane was flying from Ahmadabad airport at 13:39 local time (08:09 GMT). According to Indian Interior Minister Amit Shahi, the plane was fully charged with 100 tons of fuel before the flight.
Recent reported data show that the plane has reached 625 feet (109 m) height. Then it goes down and disappears from the sight behind the trees and buildings before the explosion.
According to video cameras, the plane was 30 seconds in the air.
Assumptions about the "extremely rare" double engine malfunction
It is almost impossible to determine the cause of the disaster based on videos.
A large-scale investigation will start in the coming days, which will include both self-examiners and debris. Judging by the existing staff, the plane has difficulty with the ground.
One of the reasons for some professionals is the possibility of a rare double engine.
Bird
Another option before some Indian specialists is a collision with birds.
The specialists and pilots familiar with the Ahmadabad airport told the BBC that it was "known for the large number of birds."
"They are always there," said expert Mohan Ranganathan. The same thing was told three Indian pilots who fled and left the airport.
What role did the plane's wings play?
During the interview with BBC Verify, three experts assumed that the accident could take place as a result of non-compliance with plane shutters, although other pilots and analysts dispute this option.
Wings play an important role in flying, climbing, landing and landing, as well as help the plane create the maximum rise with low speeds.
In Ahmadabad, where the temperature approached 40 ° C. In such conditions, even a small mistake can have catastrophic consequences.
