Sikorsky Unveils New Gearbox for S-92A

By Graham Warwick graham_warwick@aviationweek.com

Sikorsky plans to introduce a redesigned main gearbox for the S-92A helicopter this month in a bid to overcome cracking that has required operators to inspect mounting pads within every 10 hours of flight.

FAA has amended a 2009 airworthiness directive (AD) to expand the recurrent inspection requirement to include a previous redesign of the gearbox, which Sikorsky calls ...

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