As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
A BURNING ODOR ENTERED THE COCKPIT AND CABIN ON CLIMBOUT FROM ABQ. THE AIRCRAFT WAS RETURNED TO ABQ WHERE IT LANDED WITHOUT INCIDENT. MAINTENANCE FOUND THE AVIONICS COOLING FAN INOPERATIVE. THE AVIONICS COOLING FAN WAS REMOVED AND REPLACED. OPERATIONAL CHECKS WERE GOOD.