As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CRUISE FLIGHT THE RT (NR 2) ENGINE FIRE WARNING LIGHT ILLUMINATED WITH NO SECONDARY INDICATION OBSERVED. AIRCRAFT LANDED SAFELY AT A NEARBY EMS HELIPAD WHERE TECH FOUND A BROKEN WIRE AT ONE OF THE ENGINE DETECTORS. WIRING REPAIRED IAW MFG STANDARD PRACTICES MANUAL.