What was found
(AUS) MAIN TRANSMISSION LOWER SUN GEAR BEARING CAGE DISINTEGRATED - BEARING OIL PRESSURE JETS WERE ALSO FOUND TO BE BLOCKED WITH A NON FERROUS METAL (METAL DID NOT ORIGINATE FROM THE TRANSMISSION)- TRANSMISSION HAD BEEN FITTED FOR APPROXIMATELY 80 HOURS -FURTHER INVESTIGATION FOUND THAT THE PREVIOUS TRANSMISSION FITTEDALSO HAD BLOCKED OIL JETS - IT IS SUSPECTED THAT AS THEHELICOPTER HAD PREVIOUSLY HAD AN ENGINE FAILURE FOR METAL IN THE FILTER, THE COSHARED ENGINE/TRANSMISSION OIL COOLER HAD NOT BEEN CLEANED OR REPLACED - METAL CONTAMINATION OF TRANSMISSION OIL SYSTEM