Investigators said a French navy vessel equipped with deep-water listening devices has detected signals from one of the black boxes of the EgyptAir plane. The flight recorders could contain crucial information to help solve the mystery of why the ill-fated plane.  But France's aviation safety agency said it is expected to be at least another week before the black boxes can be recovered from the seabed by an underwater robot. Airbus A320 plunged into the sea with 66 people on board en route from Paris to Cairo on May 19.

For the development on the signals detecting, we talk in line with our correspondent Yasser Hakim.

Q1. How is the operation of the recovery on the detected black box going on?

Q2. If they found the black box, how would it to be analysed?