The circuit contains a microphone amplifier and a speaker amplifier. We can say it’s a digital voice recorder. S1 switch is for recording / play-back ( recording in ON position ). When S2 is OFF the ...

With the recovery of both parts of the black box of the plane, it would be easy to find the cause of the crash for ...

Investigators will never know exactly what the Alaska Airlines pilots were saying in the chaotic, loud first moments after a door plug blew off a Boeing 737 MAX 9 on Friday, leaving a hole in the ...