As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON CLIMB-OUT FROM DEN, NR 3 EPR STARTED SURGING UP AND DOWN 10 TO 15 PERCENT, SHUT OFF RT PACK, SURGING STOPPED. MADE PRECAUTIONARY LANDING BACK IN DEN CONFIRMED FAULT FOUND 10 SENSE LINES LOOSE ON RT FLOW CONTROL VALVE. TIGHTENED PER STD PRACTICES REF MM 36-12-01. OPS CHECK NORMAL MX FUEL BURN 2780 LBS.