A small plane that made an emergency landing in Bridgeport Wednesday had taken off from Danbury Municipal Airport.  The single-engine Cessna was scheduled to land at Sikorsky Memorial Airport in Stratford, but landed a few miles away at near a beach in Seaside Park.  FAA records show the plane is registered to Andrew Mitchell, of Bridgeport.  The pilot, the only person on board, took off shortly after 4:30pm Wednesday from Danbury and Sikorsky Airport Tower reported losing contact with the aircraft around 4:50pm.  The pilot was uninjured.  The plane was reportedly low on fuel.