When Lauda Air Flight 004 crashed over Thailand, investigators faced a mystery: Why did a Boeing 767 suddenly break apart in mid-air? The black boxes showed no warning, no explosion, no pilot error. But then — the flight data revealed something impossible: The left engine thrust reverser activated. In flight. At 30,000 feet. A thrust reverser is only meant for landing — it redirects engine power forward to slow the plane down. But in the air? It’s like hitting reverse in a car going 900 km/h. In