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 ...
