As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EMERGENCY LANDING- FLIGHT DEPARTED WITH BSCU SYS, BRK/STEER MEL 32-42-03A. WHILE ENROUTE, SECOND CHANNEL WAS LOST. CREW DECLARED AN EMERGENCY AND RETURNED TO DEPARTURE. MAINT REMOVED AND REPLACED THE BRAKE/STEERING CONTROL UNIT IAW MM 32-42-34. OPS CHECK WAS NORMAL. (K)