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8th August 2013 | 13:33

#141 (permalink)

HeliHenri

Joined: Dec 2011

Posts: 787

Likes: 44

From: Europe

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Quote:

Developing and qualifying a new engine installation and dynamic components (even without new gearboxes) is no small task.

About 8 years to do so ! you're right, not a small task for Sikorsky

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