Beijing has high hopes for its C919 single-aisle jet after years of delay, but the plane depends on engines, avionics and other gear from Western companies.

The Trump administration could use the investigation to impose new tariffs on imported planes, jet engines and other aerospace parts.

President Trump hailed an agreement with Britain as a breakthrough — but far tougher negotiations, including with China, beckon.

The plane maker, which has been trying to recover from a quality crisis, could lose orders in China as a result of President Trump’s tariffs.