What was found
ON TAKEOFF, TRANSMISSION CHIP LIGHT ILLUMINATED, PILOT RETURNED TO THE PLATFORM. SHUTDOWN AND NOTIFIED MAINTENANCE. REMOVED UPPER CHIP PLUG AND FOUND 3 SMALL SLIVERS. CLEANED THE PLUG, REINSTALLED CHIP PLUG AND PERFORMED A 30 MINUTE PENALTY RUN AND LEAK CHECKED. APPROPRIATE LOG BOOK ENTRIES WERE MADE. AC WAS RETURNED, IAW MAINTENANCE REQUEST. UPON LANDING, THE MECHANIC REMOVED AND REPLACED THE TRANSMISSION AND THE MAST ASSY AND THE AIRCRAFT WAS RETURNED TO SERVICE. (K)