Indonesian Divers Find Black Boxes, Human Remains In Plane Wreckage

The transcript discusses the crash of a Boeing 737-500 in the Java Sea, detailing the recovery of black boxes and human remains. The crash occurred shortly after takeoff from Jakarta, with no survivors among the 62 people on board. Witnesses reported an explosion and a large wave. Indonesian authorities are collecting DNA samples for identification. The incident adds to Boeing's troubles, following previous crashes involving the 737 Max model. However, the aircraft in this crash did not have the same automated system issues. The plane was a reliable workhorse model, having completed another flight earlier that day.

What was detected by the Navy ship sonar system related to the crash?

What issues did the previous Boeing 737 Max crashes have that the Indonesian aircraft did not?