William Robert McCoskey, Jr. of Mill Creek, WA, age 78, passed away on November 3, 2026. He was born on February 20, 1948, in Sullivan, Indiana, to William R. and Florence McCoskey. He is survived by his wife, Karen McCoskey, his sons; Will and Joe McCoskey and one of his sisters; Deborah Parker.
After graduating from Frankfort High School, he became a journeyman machinist and worked as a tool and die maker prior to transitioning into engineering. While living in Frankfort, he was active in the Masonic Lodge.
He was employed in the aerospace industry by GE Aircraft Engine Group in Cincinnati, Ohio and Albuquerque, New Mexico, and by The Boeing Company in Seattle, Washington, where he received numerous patent awards for his innovations.
He was known for his passion for value engineering and product development. He enjoyed working on and riding Trail 90 motorcycles with his sons and camping with his family.
A memorial service will be held at Day Genda Funeral Home in Frankfort, on Saturday, November 14, 2026. Visitation will begin at 11:00 a.m. and the service will begin at 1:00 p.m. Burial will follow in Buntin Cemetery.