The Indonesian government decides to help develop its airline industry by discounting start-up fees. As a result there are a dozen new airlines. One of them is AdamAir, named after the founder's son. A flight takes off, wanders off course, suddenly goes into an unrecoverable power dive at a speed approaching that of sound, comes apart in the air, and hits the sea.
All the material that the investigators need is now at the bottom of the ocean somewhere -- no one is quite sure -- and AdamAir refuses at first to fund the million-dollar recovery operation but is finally persuaded to pitch in.
Seven months later, both the cockpit voice recorder and the flight data recorder are discovered and found working. Data from the two are combined and it's found that a part of the navigation system stopped working due to poor maintenance. The pilots switched off the erring autopilot to fly the aircraft manually but then neglected their task while their attention was directed to the navigation problem.
The airplane slowly rolled to the right. The pilots could see nothing because they were in a storm, until a warning told them their bank angle was now 35 degrees. The airplane immediately dropped off to the right and headed towards the ocean. The pilot should have leveled his wings and brought the nose up. Instead he tried to bring the nose up first, which doomed the airplane and everyone aboard.
An examination of AdamAir's books revealed that the airline had been averaging about one incident a year, and that the training program for pilots was inadequate. They'd hired ground crew with too little experience. End of AdamAir.
Marvelously organized episode, as is usual for this series. And extremely non-PC. If a pilot, an airline, or an airplane manufacturer is responsible, it gets zinged.