As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FAULT CODE 21-90-48-44, CREW NOTICED A BURNING ODOR AFTER ENGINE START AND FWD EQUIPMENT COOLING SUPPLY FAN CIRCUIT BREAKER TRIPPED ALONG WITH ASSOCIATED EICAS MESSAGE FOR FORWARD COMPARTMENT OVERHEAT. R & R FORWARD SUPPLY COOLING FAN IAW AMM 21-58-06, OPS CHECKS GOOD. NO DEFECTS NOTED AT THIS TIME.