What was found
(CAN) APPROXIMATELY 1.3 HR INTO FLT MAIN TRANSMISSION WARNING LIGHT ILLUMINATED. A/C WAS APPROXIMATELY. 3 MINS AWAY FROM AN ON ROUTE AIRPORT; THE PILOT ELECTED TO LAND AT AIRPORT & HAVE MAINTENANCE ENGINEER INVESTIGATE PROBLEM. AME PULLED MAGNETIC CHIP DETECTOR, TRANSMISSION INTERNAL & EXTERNAL OIL FILTERS. THERE WAS A HEAVY ACCUMULATION OF METAL PARTICLES ON CHIP DETECTOR AS WELL AS PRESENCE OF METAL ACCUMULATION IN BOTH OF FILTERS. THIS METAL APPEARS TO BE THAT OF A BEARING. A/C HAS BEEN REMOVED FROM SERVICE & REPLACED TRANSMISSION WILL BE INSTALLED D. MAIN ROTOR MAST WILL BE INSP & REPLACED OR REPLACED AS DEEMED NECESSARY BY OUR OVERHAUL FACILITIES.