Col. Frederick Wagner Trone, 47, a resident of McLean, Va., for six years until his retirement from the Army in 1977, died of an accidental gunshot wound Saturday outside his home in Altoona. Pa.

The Blair County, Pa., coroner said Col. Trone had fallen on an icy road while carrying a rifle and that the weapon had discharged accidentally, causing his death.

Col. Trone was stationed in the Washington area from 1966 to 1969 and again from 1971 to 1977, when he served with the Army concepts analysis agency in Bethesda. The family lived in McLean during those years.

Col. Trone was born in York, Pa., and grew up in Altoona. He served with the Marine Corps in the Korean conflict and later joined the National Guard and then the Army Rserves. He was a graduate of Shippensburg State Teachers College, Shiipensburg, Pa., and held a master's degree in pshychology and occupational counseling from Pennsylvania State University. He had taught in the public schoolds in Mount Union, Pa., before going on active duty with the Army in 1962.

Since his retirement last year, he had been public affairs officer for a Blair County park in the Altoona area.

Survivors include his wife, Dorothy Long Trone, of the home in Altoona, and three children, Connie, Mark and Timothy, all of Falls Church.