The obituary Wednesday about Philip Tracy Cunningham misstated his first name. (Published 11/11/1999)

Paul Tracy Cunningham, 62, a retired Navy commander who later operated a computer and space components manufacturing business, died Nov. 6 at home in Alexandria after a heart attack.

Cmdr. Cunningham retired in 1998 as chairman of the board, president and chief executive officer of Microdyne Corp. of Alexandria.

He served 20 years in the Navy, including duty aboard submarines, a posting in Guam and an assignment as executive assistant to the comptroller at the Department of Defense. While serving in the Navy he received a master's degree in business administration from Harvard.

After his military retirement in 1979 he founded Basic Technology Corp. in Alexandria, which he sold, and then founded Federal Technology Corp., an Alexandria operation of which he was chairman of the board and president. This company later absorbed Microdyne Corp. of Florida and took Microdyne's name.

Cmdr. Cunningham was born in Washington and grew up in New Jersey. He graduated from Holy Cross College.

He was an art enthusiast and collector. In recent years he spent summers at his vacation home at Watch Hill, R.I. He was a member of the Georgetown Club.

His marriage to Mary Lou Riggio Cunningham ended in divorce.

Survivors include his wife, Lizanne Stahnke Cunningham, and their twin children, Daniel and Jacqueline, all of Alexandria; four daughters from his first marriage, Elizabeth Cunningham of Clinton, N.J., Maura Cunningham Spaeth of Cos Cob, Conn., and Katharine Cunningham and Sheila Cunningham Donaldson, both of Fairfax; a sister; and two grandchildren.