What was found
AFTER TAKEOFF DURING A PATIENT TRANSFER FLIGHT, THE PILOT ENCOUNTERED A CWP TRANSMISSION PRESS LIGHT ILLUMINATION. IMMEDIATELY PERFORMED AN UNSCHEDULED LANDING. PILOT REPORTED 3 MINUTES OF FLIGHT TIME WITH A 2 MINUTE COOL DOWN FROM THE TIME THE LIGHT ILLUMINATED. FOUND THE LOWER CHIP DETECTOR ON THE TRANSMISSION UNLOCKED. THERE WAS NO OIL LOSS FROM THE TRANSMISSION, NO TRANSMISSION OIL OVER TEMP & NO CHIPS FOUND. AFTER A 20 MINUTE GND RUN, THE ACFT CAN THEN BE RETURNED TO SERVICE. PERFORMED 20 MINUTE RUN, CHECKED THE FILTER & DETECTORS FOR CHIPS IN WHICH NO DEFECTS WERE NOTED. PRESS & TEMPS WERE NORMAL. ACFT APPROVED FOR RETURN TO SERVICE.