INADVERTENT VFR FLIGHT BY THE PILOT INTO INSTRUMENT METEOROLOGICAL CONDITIONS (IMC), AND HIS FAILURE TO MAINTAIN CONTROL OF THE AIRCRAFT DUE TO SPATIAL DISORIENTATION. FACTORS RELATED TO THE ACCIDENT WERE: THE ADVERSE WEATHER CONDITIONS, SELF-INDUCED PRESSURE ON THE PILOT TO MAKE THE FLIGHT, AND THE PILOT'S LACK OF INSTRUMENT EXPEREINCE.