As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: FLIGHT CREW REPORTED A BURNING WIRE SMELL FOR LESS THAN FIVE SECONDS IN FLIGHT DECK AND FORWARD GALLEY WHEN AN AIR PACK NR 1 OVERHEAT AND AN AIR PACK NR 1 REGUL FAULT MESSAGES DISPLAYED. MAINTENANCE FOUND A FAULT MESSAGE IN SKYWISE FOR THE PACK 1 AIR INLET FLAP ACTUATOR AND REPLACED IT PER AMM 21-61-51. A SATISFACTORY OPERATIONAL CHECK WAS ACCOMPLISHED WITH NO ISSUES OR SMELLS NOTED.