Marshfield - Donald James Gaynor, 67, of Englewood, Fla., formerly of Marshfield, died in a plane crash in Florida on April 4, 2009. The son of Kathryn D. Gaynor of Englewood, Fla., and the late John “Mugsy” Gaynor, he graduated from Weymouth High School in 1960, owned and operated Mechanical Service Co. in Marshfield before retiring and moving to Englewood, Fla. Mr. Gaynor and his wife, Wendy, were both pilots and aviation enthusiasts. They shared a passion for flying and all things aviation, making friends everywhere in the United States, Canada and the Caribbean. He received his pilot certificate in 1970 and has owned several single engine planes since that time. A big part of his life was spent restoring and showing his 1959 K Model Beach Bonanza, which was a National Grand Champion at Oshkosh Airventure and Sun ’n Fun. He was very active in EAA Chapter 1285 in Venice, Fla., and has flown many “Young Eagles.” The Gaynors have volunteered at the Sun ’n Fun Convention in Lakeland as Parts Exchange co-chairmen for the past 18 years. He was a member of the Experimental Aviation Association, Vintage Aircraft Association, American Bonanza Society, National Air Racing Group and Quiet Birdman. He was also a member of the American Coach Association, Southeast Chapter American Coach Association, “Mac Pack” and Rockland Eagles. In addition to his mother, he leaves his wife, Wendy (Myers) Gaynor; his children, John R. Gaynor and his wife, Lisa, of Cave Creek, Ariz., and Kim Sylvester and her husband, Randy, of Pembroke; his grandchildren, Adam Slys, Johnny Gaynor, Provan Slys, James Gaynor, Jared Gaynor and Janelle Gaynor; and his brother-in-law, Ron Myers of Anguilla, BWI. A memorial service will be held at Old South Union Church, 25 Columbian St., South Weymouth, at 10:30 a.m., on Saturday, April 11. Arrangements by C.C. Shepherd Funeral Service, South Weymouth. In lieu of flowers, memorial donations may be made to the Florida Air Museum, 4175 Medulla Road, Lakeland, FL 33811.