Weinrich is thought to have managed operations for "Carlos" — Ilich Ramírez Sánchez — in Europe during the 1970s and '80s. In 1975 Weinrich and Carlosattempted to hit an Israeli airplane at Orly Airport with two RPG-7rocket launchers. The rockets missed and hit an empty plane and a building instead. He was imprisoned for providing the cars used in the attack, but was released on probation for health reasons eight months into his sentence and became a fugitive. In the late 1970s he introduced Carlos to Magdalena Kopp, at the time Weinrich's girlfriend, whom Carlos would marry in 1979.