International flights were grounded after authorities discovered what happened, the court hears.
The agency released a critical report that puts the Starliner incident at same mistake level assigned to the fatal Columbia and Challenger shuttle disasters.
Comac's passenger jet is attracting customers in South East Asia where demand for affordable aircraft is growing.
The Boeing 787-8 jet was grounded after a pilot reported a possible issue with the fuel control switch.
Campaigners say they have evidence the plane had previously suffered a series of technical failures, including a fire.
An aircraft that crashed in November had a structural flaw that had been identified by Boeing 15 years ago, investigators say.
Boeing and Airbus confirm completion of deal that sees Spirit operations in Belfast being split between the two companies.
The judge said he did not believe the decision was in the public interest but he did not have authority to deny the request.
The beleaguered firm said it now plans to deliver 777X jets starting from 2027.
