Boeing said on Wednesday it had sold aircraft-related goods to Iran Air in the third quarter, marking the first acknowledged dealings between U.S. aerospace companies and Iran since the 1979 U.S. hostage crisis.

The Chicago-based aerospace and defense company said in a filing that it sold aircraft manuals, drawings, navigation charts and data to Iran Air to help improve the safety of Iran’s civil aviation industry.

The sales did not include spare parts for aircraft, which were thought to be likely since Iran Air’s fleet of planes includes vintage Boeing and Airbus jetliners delivered as long ago as 1978. […]