A D.C. Superior Court jury convicted a 23-year-old Adelphi man yesterday of murder in the August 1980 shooting death in Washington of a 52-year-old retired Air Force chief master sergeant.

The jury found Dentic Ray Davies guilty of second-degree murder in the death of Leotis J. Hughes of Oxon Hill, who was killed during an apparent robbery attempt at a rooming house Hughes owned at 462 K St. NW.

Hughes, who had retired nine months before the shooting after 31 years in the Air Force, was a chief master sergeant in the Air Force's religious support division. According to medical testimony at the trial, he was shot once through the heart while he was lying on the ground after struggling with his assailants.

According to law enforcement officials, Davies participated in the apparent robbery attempt but did not fire the shot that killed Hughes. The accused gunman, Michael Jackson, 24, also of Adelphi, is being held pending trial for murder. No trial date has been set for him.

D.C. Superior Court Judge Fred B. Ugast said he would sentence Davies on Sept. 28. Davies faces a maximum term of 15 years to life in prison.