The Cyclone FAA certification requirement was dropped by Canada in exchange for concessions by Sikorsky on future aircraft support costs.
One unforeseen factor I was told that adversely effected S-92 FBW FAA certification was the FAA transfering oversight of the aircraft’s FBW systems from the Eastern Regional Office to the Southwest Regional Office. Sikorsky had built a good working relationship with the Eastern Office over the years. But the Southwest Office had experience on the 609 FBW certification.