FLIGHT INTO KNOWN ADVERSE WEATHER CONDITIONS BY THE NON-INSTRUMENT RATED PILOT, AND HIS SUBSEQUENT SPATIAL DISORIENTATION, WHICH RESULTED IN A LOSS OF AIRCRAFT CONTROL. FACTORS RELATED TO THE ACCIDENT WERE: INOPERATIVE INSTRUMENT PANEL LIGHTS, DARK NIGHT, ADVERSE WEATHER CONDITIONS, UNRELIABLE FLASHLIGHT, THE PILOT'S VISUAL PERCEPTION, AND HIS LACK OF INSTRUMENT EXPERIENCE.