A 12-minute flight and a serious in-flight fire
At approximately 1000 feet AGL, I entered a left crosswind to begin the pattern for an uphill landing on runway 36. During the crosswind leg, I noticed an odor in the aircraft cockpit that smelled like hot plastic. During entry into the left downwind leg for runway 36, the plastic odor became much stronger. I turned off all aircraft-powered electrical equipment, including the radio and transponder. I abbreviated my pattern slightly and turned left base early.