Airbus Helicopters is carrying out final tests on an upgrade to its real-time monitoring of the EC225’s bevel gear vertical shaft, which caused the type to be grounded for nine months during 2012 and 2013. The software upgrade aims to eliminate issues with the Mod 45 system, put in place to carry out real-time monitoring of the vertical shaft inside the helicopter’s main gearbox. The Mod 45, part of the aircraft’s M’ARMS onboard health and usage monitoring system (HUMS), monitors ...

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