A Reims Cessna F406 Caravan II aircraft was destroyed in an accident shortly after departure from Johannesburg International Airport (JNB), South Africa. Both pilots and the sole passenger were killed. The aircraft departed Johannesburg on an international cargo flight to Windhoek-Eros Airport (ERS), Namibia. The cargo consisted mainly of express freight parcels and two heavy steel bars approximately 3 m in length each. The aircraft crashed approximately 106 seconds after commencing its takeoff roll, impacting the ground in a left wing low attitude approximately 700 m South of the threshold of runway 03R (right) in a marshy area. The investigation revealed that the aircraft was overloaded by approximately 16% (700 kg). The cargo was not secured, nor was there a seat or a restraining device in the aircraft for the passenger. The Certificate of Airworthiness for the aircraft was invalid at the time of the accident, as both engines have exceeded their TBO (time between overhaul) by approximately 185 hours. Also, the operator undertook this flight with the full knowledge that the existing AOC expired on the October 31, 2001. PROBABLE CAUSE: “The accident resulted due to a loss of control (aircraft becoming uncontrollable in the pitch and roll axis), which occurred approximately 35 to 40 seconds after lift-off/rotation. It was induced and aggravated by a 16% overload condition as well as the exceedance of the certified aft CG limitation of the aircraft.”