As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 1728 - MEM-DEN, NR 1 BRAKE DEBOOSTER WILL NOT RESET. NR 1 BRAKE ASSEMBLY LOCKED UP. REPLACED NR 1 BRAKE ASSEMBLY PER B727 MM 32-41-32. ALSO, REPLACED NR 1 BRAKE LOCK OUT DEBOOST VALVE PER B 727 MM 32-41-21. ALL SYSTEMS CHECKED GOOD. AIRCRAFT RETURNED TO SERVICE. (M)