What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
(-23) Aircraft was in cruise flight, passengers asked that the temperature in the cabin be increased. After heat was increased, smoke was witnessed coming out of the pilot and copilot sub panel, passengers also noticed smoke in cabin. Emergency was declared and aircraft descended to FL120. While descending cabin dump was pulled to help rid cabin of smoke to no avail. At FL120 the power was turned off of the aircraft and the smoke decreased. Aircraft landed safely at Brigham City, Utah. Maintenance found that the cabin vent fan forward of the pilots feet had burned internally, putting smoke into the air ducts of the aircraft. Fan was disabled and aircraft flown to long beach California for fan change.
As the FAA filed it
(-23) AIRCRAFT WAS IN CRUISE FLIGHT, PASSENGERS ASKED THAT THE TEMPERATURE IN THE CABIN BE INCREASED. AFTER HEAT WAS INCREASED, SMOKE WAS WITNESSED COMING OUT OF THE PILOT AND COPILOT SUB PANEL, PASSENGERS ALSO NOTICED SMOKE IN CABIN. EMERGENCY WAS DECLARED AND AIRCRAFT DESCENDED TO FL120. WHILE DESCENDING CABIN DUMP WAS PULLED TO HELP RID CABIN OF SMOKE TO NO AVAIL. AT FL120 THE POWER WAS TURNED OFF OF THE AIRCRAFT AND THE SMOKE DECREASED. AIRCRAFT LANDED SAFELY AT BRIGHAM CITY, UTAH. MAINTENANCE FOUND THAT THE CABIN VENT FAN FORWARD OF THE PILOTS FEET HAD BURNED INTERNALLY, PUTTING SMOKE INTO THE AIR DUCTS OF THE AIRCRAFT. FAN WAS DISABLED AND AIRCRAFT FLOWN TO LONG BEACH CALIFORNIA FOR FAN CHANGE.