What was found
(CAN) DURING APPROACH, THE PILOT NOTICED ENGINE FIRE WARNING. ENGINE WAS SHUTDOWN AND THE FIRE HANDLE PULLED. THE FIRE WARNING WENT OUT AND THE ACFT LANDED UNEVENTFULLY SINGLE ENGINE. POST FLIGHT INSP FOUND THAT THE FIRE ORIGINATED FROM A LOOSE FUEL NOZZLE MANIFOLD CONNECTION. NOT RELATED TO ENGINE MFG RECOMMENDS THE SDR BE CLOSED ON THE BASIS OF THE FOLLOWING INFORMATION.