What was found
EMERGENCY DIVERSION, SMOKE ODOR IN AFT CABIN. DECLARED EMERGENCY, DIVERTED, LANDED WITHOUT INCIDENT. FOUND GASPER VALVE DUCT BLOWN OFF. REINSTALLED IAW AMM 21-24-03. R & R RECIRCULATING FILTERS IAW AMM 21-24-02. INSPECTED ALL 3 AVIONICS BAYS WITH BURNING ODOR, PERFORMED OPS CHECK OF APU AND ENGINE BLEEDS IAW AMM 36-00-00. OK FOR SERVICE.