Dhaka, April 18 -- A Boeing jet that arrived at a completion plant near Shanghai last month was returning to the US, flight tracking data showed on Friday, in a sign that at least one Chinese airline could be halting deliveries due to US tariffs.

The US planemaker was reported earlier this week to face a Chinese ban on its imports, part of an escalating confrontation over US President Donald Trump's "reciprocal" global tariffs, though industry sources said the status of rules remained unclear.

In a sign that Boeing was preparing for normal business just weeks before Trump announced tariffs on April 02, tracking data showed at least four new 737 MAX planes sitting at a completion and delivery centre in Zhoushan, where Boeing installs int...