As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMB CREW REPORTED THE NR 2 ENGINE WAS SURGING CAUSING THE ACFT TO YAW DURING THE SURGING. DECLARED AN EMERGENCY AND RETURNED THE FIELD. GROUND MX WAS ABLE TO REPRODUCE THE ISSUE ON THE GROUND. R & R THE MFC AND THE HP FUEL PUMP. AN OPS CHECK PRODUCED SATISFACTORY RESULTS AND THE ACFT WAS RETURNED TO SERVICE.