As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING PREFLIGHT/BOARDING ALT COOLING FAN LIGHT ON. NORMAL SUPPLY FAN C/B OUT NO HISTORY ATTEMPTED RESET PER GPM 05 00 91. SMOKE / WIRING FIRE IN COCKPIT OVERHEAD BEHIND OVERSER'S GASPER AIR VENT. SHUT OFF ELECTRIC POWER AND EXTINGUISHED WITH HALON. FOUND GASPER VENT HOSE CLAMP THUMB SCREW CHAFING WIRING HARNESS W018 DUE TO IMPROPER ORIENTATION. REPAIRED P18 WIRING GOING & DISCONT STATION AP1800 AND AP0500 REF WIRING PRACTICE MANUAL 20 10 13.