Keystone Helicopter Corp. (Booth No. 2645), which was acquired by Sikorsky Aircraft last year, announced the selection of Patty Ryan as chief financial officer. Her background includes 22 years at Sikorsky, where most recently she served as manager of the integration team for Sikorsky at Keystone. She has a master’s degree in business administration from Rensselaer Polytechnic Institute of Troy, N.Y., and is a certified managerial accountant. Keystone is a factory-authorized service center for Bell, Eurocopter, MD Helicopter, Rolls-Royce, Turbomeca and Pratt & Whitney, in addition to Sikorsky.