As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER DEPARTURE AND CLIMBING OUT, HEARD SOMETHING THAT SOUNDED LIKE A CIRCUIT BREAKER POP. ABOUT 1 MINUTE LATER, SMELLED AN ELECTRICAL BURNING ODOR. FOUND IRU NR 1 COOLING FAN AND IRU NR 2 COOLING FAN INOP AND BURNED. REPLACED IRU NR 1 COOLING FAN AND IRU NR 2 COOLING FAN WITH NEW COOLING FAN ASSYS IAW MM 34-908. OPS CHECKED GOOD.