Boeing Co. landed its second jetliner deal with an Iranian airline since the 1970s, a $3 billion agreement that sets up a test of the planemaker’s ties with President Donald Trump.

The pact with Iran Aseman Airlines to purchase 30 of Boeing’s 737 Max planes adds to a separate $16.6 billion agreement with Iran Air, which the company is still finalizing. If completed, the transactions would be the first U.S. aircraft sales to the Islamic Republic since the Shah era.