As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF FROM IQT AND AT 15,000 FEET FIRE WARNING BELL SOUNDED WITH NO LIGHT, WENT THROUGH AOM PROCEDURES AND RETURNED TO IQT. TROUBLESHOT FIRE WARNING SYSTEM AND FOUND AFT FIRE WARNING SENSOR CONNECTOR ON NR 3 ENGINE, CONTAMINATED WITH OIL. CLEANED CONNECTOR AND RESAFTIED. OPS TESTED FIRE WARNING SYSTEM, OPS CHECKED NORMAL. (M)