As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT CREW SMELLED ELECTRICAL INSULATION BURNING IN THE COCKPIT. WE NOTICED THE GASPER FAN CIRCUIT BREAKER OPENED. A FEW MINUTES LATER THE SMELL SUBSIDED. GASPER FAN CIRCUIT BREAKER WAS LEFT OPEN AND GASPER FAN SWITCH TURNED OFF. A/C RELEASED FOR SERVICE PER MEL 21-24 CAT D EXP 10-16-96. REMOVED AND REPLACED GASPER FAN AS PER MM 21-33-11, ALL CKS GOOD.