EC175 Main Gearbox Features New Run-dry Design | Aviation International News

EC175 Main Gearbox Features New Run-dry Design

The EC175’s main gearbox has no backup lubrication system

By Thierry Dubois • Writer

July 14, 2014

[Updated 7/22/14 to clarify some points.]

Unlike its sister ship the EC225, the EC175’s main gearbox has no backup lubrication system, which could present a problem should it experience a total loss of oil. To compensate for this, its components have been designed to withstand the absence of lubricant for a limited period of time. Airbus Helicopters so far has certified a 15-minute dry-run capability (which involved a 30-minute demonstration). Further tests are scheduled for 2015 in a bid to increase the certified duration to at least 30 minutes.

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