As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: DURING CLIMB FLIGHT CREW REPORTED A BRAKES SYSTEM 1 FAULT AND A SMELL SIMILAR TO BURNING RUBBER IN FLIGHT DECK INTERMITTENT DURING FLIGHT AND AGAIN AFTER LANDING. MAINTENANCE FOUND THE BRAKE STEERING SYSTEM CONTROL UNIT (BSCU) HAD AN ELECTRICAL BURNT SMELL AND REPLACED IT PER AMM 32-42-34. A SATISFACTORY OPERATIONAL CHECK WAS ACCOMPLISHED.