There isn't a 109 knot Vne for the cast windscreens. Sikorsky released a letter about 1 1/2 weeks ago (6 week after the PHI accident) that said that the bird strike resistance of the cast acrylic (non-Sikorsky) windscreens could be considered the same as the Sikorsky acrylic and glass windscreens only if the cast acrylic equipped aircraft was flown at 109 knots or less.
The letter also said that the design standards for the aircraft type did not require bird strike resistance, but that Sikorsky had done it anyway as a product improvement to meet an unspecified international standard. Bird weight stated was 2 pounds but with no associated airspeed listed.