As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON CLIMB OUT GOT NR 6 MAIN CARGO SMOKE LIGHT AND FIRE BELL. PERFORMED EMERGENCY PROCEDURES PER QRH. AT 500 AGL THE LIGHT WENT OUT AND THE SYSTEM TESTED OK. R & R NR 6 DETECTOR AND MAIN CARGO SMOKE DETECTOR MODULE PER 727-200 MM 26-16-011-4 AND 26-16-000-5.