Antanas was born on 2 Jan 1938 in Taraugė. He arrived with his parents Domas and Kaze and brothers Tomas and Victoras. They arrived at Sydney on the Protea 25 March 1949.
Antanas enlisted in the RAAF, and was attached to the 76th Squadron, as a Flying Officer.
Flying Officer Antanas Karpys, was killed instantly when his Mirage crashed during aerobatic manoeuvres near the base on 29 September 1967, aged just 29 years.
The Mirage jet crashed 60 feet from the married quarters at Williamtown Air Base, disintegrating into what searchers described as "a million pieces".
Karpys was doing a series of solo stunts at 500 feet when the jet broke up on its 500 up on third roll, brushing trees and TV aerials on houses in the quarters where he had lived.
The RAAF inquiry team searched the crash area for pieces of the $2.4 million aircraft, which cut a swathe 80 yards by 700 yards north east of the base. Since their introduction to the RAAF in 1964, five Mirage aircraft have crashed and two pilots, including Flying Officer Karpys, killed. Another Mirage crashed at the end of the month, but fortunately the pilot was ejected from the plane and survived.