What was found
AC DEPARTED AIRPORT ON A SIGHT SEEING FLIGHT AFTER APPROX 20 MINUTES INTO THE FLIGHT THE PILOT OBSERVED A FLICKERING ENGINE CHIP LIGHT, THEN A SOLID ENGINE CHIP LIGHT. THE PILOT PERFORMED A PRECAUTIONARY LANDING. AN ADDITIONAL AC WAS DISPATCHED (WITH MAINT) TO PICK UP THE PASSENGERS AND CREW. MAINT INSPECTED ALL ENGINE CHIP PLUGS AND THE ENGINE OIL FILTER. A VERY SMALL METAL SLIVER (HAIR SIZE) WAS FOUND ON THE FULL FLOW CHIP DETECTOR, NO OTHER DEFECTS FOUND. PERFORMED MAINT ACTIONS IAW TEC. MM 71-02-07 LEVEL A. PERFORMED OPERATIONAL CHECK FLIGHT, AND RE-INSPECTED DETECTORS AGAIN, NO PARTICLES FOUND. NOTE: RECENT OIL ANALYSIS RESULTS WERE ALL NORMAL, NO FURTHER DEFECTS FOUND. REF: TEC MM 71-02-07. NOTE; 100 HR INSP WAS PERFORMED 3.0 HRS PREVIOUS TO THIS EVENT, IT IS POSSIBLE THAT THIS METAL SLIVER CAME FROM CHIP DETECTOR DURING INSPECTION.