What was found
PBI - INFLIGHT JFK-MIA. AIR INTERRUPT DUE TO RIGHT PACK FAILED EN ROUTE AND LEFT PACK ALREADY ON PLACARD. EMERGENCY DECLARED LANDED PBI WITHOUT INCIDENT. AIRCRAFT WAS FLOWN TO MIA FOR REPAIRS. ELBOW DUCT FROM AIR CYCLE MACHINE TURBINE TO REHEATER SHOWED SIGNS OF LEAKAGE WHERE TURBINE INLET TEMPERATURE BULB SCREWED IN. REPLACED TURBINE UNIT TEMPERATURE CONTROL MPN22023234, LOW LIMIT VALVE, AND THE TEMPERATURE BULB MPN2340239001 FOR THE RIGHT PACK. REPLACED AIR CYCLE MACHINE MPN6806404 SERIES 4 FOR THE LEFT PACK. SYSTEM GROUND CHECKED NORMAL.