As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF, IN CLIMB, AT F1120 PILOTS FIRE WARNING ANNUNCIATOR ILLUMINATED WITH FLIGHT ENGINEER'S NR 1 ENG A & B LOOPS AT TOP OF BAND. ENGINE WAS SHUT DOWN AND RT FIRE BOTTLE DISCHARGED. FIRE DETECTION RETURNED TO NORMAL AND AIRCRAFT RETURNED TO TLV. TROUBLESHOOTING LED TO VARIABLE BYPASS VALVE, CABLE AND BELLCRANK NEEDING TO BE REPLACED. THE VBV CABLE WAS BROKEN AND THE BELLCRANK WAS BENT.