What was found
FLT 32 TPA-JFK, AIRCRAFT DIVERTED TO ACY AFTER ENCOUNTERING HOLDING INTO JFK FOR THUNDERSTORMS. UPON DESCENT INTO ACY, CREW STARTED APU INFLIGHT AND RECEIVED APU BLEED FAULT MESSAGE FOLLOWED BY STRONG BURNING SMELL. CABIN CREW ADVISED SMELL OF SMOKE IN CABIN AND FLICKERING LIGHTS. CREW SHUT DOWN APU AND SMELL WENT AWAY. PERFORMED VISUAL INSP OF APU, NO DEFECTS NOTED. PERFORMED APU OIL SMOKE IN CABIN INSP IAW TSM 49-00-81-810-814 AND OPS CHECK NORMAL. PERFORMED LTV SMOKE IN CABIN CHECK AND ENGINE SMOKE IN CABIN CHECK ON NR 1 AND NR 2 ENGINE, ALL CHECKS NORMAL.