As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BACK TO THE RAMP. F/O''S RMI COMPASS DG LOCKED IN THE 210 DEGREE HEADING WITH THE AIRPLANE IN THE 190 DEGREE HEADING ACTUAL.CORRECTIVE ACTION: TROUBLESHOT SYSTEM,REPAIRED BROKEN WIRE AT D377 CONNECTOR PIN L, SYS OPS GOOD IAW B727 MM 34-21-0.