The reason is because this is the second Boeing Aircraft which crashed within a period of 5 months.
Boeing has expressed their regret regarding this incident and they have declared that a complete technological analysis will be carried out.
This aircraft crashed yesterday when it was flying from the capital of Ethiopia, Addis Ababa to Nairobi in Kenya. 149 Passengers belonging to 33 nationalities as well as a crew of 8 who were on board were killed.
It is said that the pilot had declared that the air craft had to be grounded due to some fault six minutes after take-off.