As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IN FLIGHT LOWER CARGO FIRE DETECTION. FOUND SMOKE DETECTOR S/N: 8650, TO BE GIVING FALSE WARNING. REMOVED AND REPLACED ALL 5 FORWARD SMOKE DETECTORS IAW B727 M/M 26-16-01, REMOVED AND REPLACED CENTRAL CONTROL UNIT (CCU) IAW B727 M/M 26-16-20, OPS CHECKED SERVICEABLE IAW B727 M/M 26-16-01.