A Mozambican Airlines plane that went down in Namibia last month, killing all 33 aboard, was no accident according to preliminary investigations. With the co-pilot in the bathroom, pilot Hermino dos Santos Fernandes locked the cockpit door, reports the AP, then "made a deliberate series of maneuvers" that systematically lowered the plane's altitude three times—bringing it from 38,000 feet all the way to 592 feet. Dos Santos Fernandes had a "clear intention" to crash the plane, Civil Aviation Institute chief Joao Abreu said yesterday, per the BBC.
"During these actions you can hear low and high-intensity alarm signals and repeated beating against the door with demands to come into the cockpit," Abreu said. "The reasons which may have given rise to this behavior are unknown."