Jeju crash - American disappearing act

Is this surprising? When Jeffrey Epstein died in his cell, the surveillance cameras were not working at the right place and the right time. His death was declared as suicide. Dead men tell no tales, right?
Now are we being told that even the black boxes in Boeing planes are equally as faulty as the Boeing plane itself. What is going on? Black boxes are supposed to survive crashes, sending out signals for a long while to help in rescue efforts in isolated terrain.

Sending one of the black boxes to the USA for retrieval of information was a big mistake, Now, that has been proven beyond any doubt.

If the black box had failed to work, why only the last four minutes are missing? Which again points to the fact that the plane was already experiencing serious problems that led to the crash.

Anonymous